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  • Опубліковано 10 гру 2024

КОМЕНТАРІ • 455

  • @chuckwilcox6997
    @chuckwilcox6997 7 років тому +42

    Andreas, again a brilliant video which is both interesting and very informative. Your explanations of why things didn't work is very helpful along with the solutions you provide. I hope to see many more video in the future. Love your work.

  • @mralderson5627
    @mralderson5627 6 років тому +1

    Literally the last 3 things ( solar power for esp8266, this mailbox notifier and Tradfri lights) i want to do as a hobby project, you have investigated! Thank you for your structured and detailed approach

  • @joymakerRC
    @joymakerRC 3 роки тому +2

    Thanks bro for all your help, you have helped me with many projects, i currently have the Lora hat for the Rasp Pi , the Dragino lora shield for arduinos( i have MEGA and DUE) and 3 heltec ESP32 Lora boards , i want them all to talk , for back-up and redundancy on a long range UAV. Im still a beginner but i studied AEROSPACE ENG at Penn State and dropped out my senior year with no degree and a hard case of alcoholism. Took me 20 years to beat the Alcohol now im back at the engineer(not in school) just for fun, in a small way you are contributing to keeping me sober. So Thank you for your videos and their part in my sobriety

    • @AndreasSpiess
      @AndreasSpiess  3 роки тому

      I am glad to read that you like my videos and that you base projects on them. That is always what I hope when I produce them.

  • @cymeriandesigns
    @cymeriandesigns 7 років тому +8

    Another great video, and thank you for taking the time to make it. I made myself a mailbox notifier out of an ESP8266 (because the mailbox is close by, I can use WiFi), a normally-closed switch, and a couple of bipolar transistors. One transistor functions to cut off the power entirely when the mailbox switch is open, which lengthens the battery life considerably (so far it's lasted over 18 months)*. When the box is opened, the switch closes, the transistor conducts, and the 8266 boots and sends the notification. The second transistor lets the 8266 keep the power on while it works to establish a connection and send the notification, which can take longer than the box door is open. When it's done, the 8266 switches off that transistor and the power drain goes back to zero. (Okay, not exactly zero since there's some leakage current, but close enough.)
    * I took this approach because I'm using a NodeMCU, which because of its USB and LED draws a lot of current even when the 8266 is in deep sleep. I didn't feel like cutting it up to disable those pieces.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      Thanks for your feedback. I used this approach with one of my Amazon buttons. Just with one P-channel FET. It could also be used here to save even more energy.

  • @ardxb123
    @ardxb123 7 років тому

    Hello Andreas, another wonderful hardwork presented free of cost to your channel viewers. I love your work and admire how quick you are. I am in Canada, if were near your place, I would have seek to join you in your work. However, I learn a lot from your videos, interestingly whenever I see any of your new video, I was already thinking about the same idea, and here you post the video, solving the issue climbing into my mind. Surprisingly frequency matched.
    About the thumbs down, it is always good to know, that people who does not like you; your work made them to see your work/videos.
    Keep up the good work, we all love your work and we need you.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Thank you for your nice words. I care more about thumbs up and nice comments like yours ;-)

  • @dhiegofc
    @dhiegofc 6 років тому

    Great... I didn't know that it is possible to use LoRa nodes in one to one communication. I am working on LoRa in my PhD here in Italy and it will help me a lot in my research. Thank you very much for upload this video

    • @AndreasSpiess
      @AndreasSpiess  6 років тому

      Good luck for your thesis. What is it´s topic?

  • @JonathanDeWitt1988
    @JonathanDeWitt1988 2 роки тому

    I very much enjoyed watching this project. It was quite sophisticated. I feel like I learned a lot. I love how low-powered you made this project and the range it had. Mailbox notification was something I had thought would be an interesting Arduino project a while back. Now that I see what all can be involved with it...I may save this as a project to attempt until I'm a little more experienced (about to get my first Arduino Pro Mini to experiment with). Perhaps the best part of this video for me was your explanation of what is essentially a checksum for data integrity. I learned this concept in one of the grad school classes I took. But your explanation is so much easier to understand. Thank you!

    • @AndreasSpiess
      @AndreasSpiess  2 роки тому +1

      You are welcome. I am sure you will succeed!

  • @marekpytel7694
    @marekpytel7694 3 роки тому

    Andreas, I loove your sense of humor and your Sweedish (purposing mistake) accent;) I admire your experience and appreciate your willing to share all the knowledge in a practical way:)

  • @prlombaard
    @prlombaard 4 роки тому

    Thankyou Mr Spiess. After two years I used your video as a QuickStart guide. Thankyou for your video. 👍🏻👍🏻

    • @AndreasSpiess
      @AndreasSpiess  4 роки тому

      The same happens to me sometimes. I have to go back to one of my old videos...

  • @uncleal6095
    @uncleal6095 7 років тому +2

    Brilliant! Thank you Andreas - you are an inspiration to all of us. Keep up the fun work...

  • @abhijitborah
    @abhijitborah 7 років тому

    Very useful project.
    Seeing the postman's photo (great guy) made me think this video was about some kind of HUD project.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      He really is a great guy and very helpful!

  • @zvpunry1971
    @zvpunry1971 7 років тому +19

    13:40 The mailboxes of your neighbors have spam-filters installed, but not yours. All that spam will trigger false alarms of your mailbox notifier.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +60

      You are right. But I am married and therefore only have 49% of the voting power for these things...

    • @zvpunry1971
      @zvpunry1971 7 років тому +8

      Then you must think of a way to differentiate between spam and china-packages, maybe by the time of day it is delivered. The spammers use child-labor to deliver their spam, so their workers are in school between 08:00 and 13:00, when a delivery occurs at this time, it is less likely spam. Maybe you should make notes what type of delivery occurs at what time. So you can get all your china-packages and you can tell your wife that there is something she is waiting for in the mailbox. ;)

    • @thesimbon
      @thesimbon 7 років тому +4

      You could add a load Cell on the mailbox floor so you will be able to know the weight of the package :-)

    • @Retro_Care
      @Retro_Care 7 років тому

      you should have 2% more voting right :), just ad a camera in the mailbox (low quality one) and switch a screen on inside if mailbox is triggered.
      or/and maybe a sensor to detect hight or something, not sure if spam mail always lays flat in the mailbox, many experiments to do wit this kind of project.

    • @zvpunry1971
      @zvpunry1971 7 років тому +2

      over-correcting an error isn't a good thing to do, it causes more problems then it solves ;)

  • @bardenegri21
    @bardenegri21 7 років тому +10

    The Radiohead library is amazing, used it with many other rf modules. It has a mesh mode too that's great

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +5

      Did you experiment with the mesh? I would be interested if it works and how much power it needs.

    • @therishabhdhiman
      @therishabhdhiman 4 роки тому

      Radio head is amazing i was trying to use NRF24 module with RF24 library but didn't worked and using RadioHead it worked like charm.

  • @midafricam
    @midafricam 5 років тому +2

    An excellent video, love your practical applications . One of the most interesting channels around.

  • @deangreenhough3479
    @deangreenhough3479 7 років тому

    Sunday Morning with Lora😀😀😀 cool Mr Spiess.

  • @icucode
    @icucode 7 років тому +1

    Thanks for all the wonderful videos! You are doing a great service! 🙋‍♂️👍

  • @PierAisa
    @PierAisa 6 років тому

    Andreas. I'm very happy to see your video. Very Very interesting and well done. It gives the opportunity to everyone to understand. Grazie. I also love your test campaign.. Regards from Italy. Juest yesterday I tested 2 Lora nodes with hand made PCB to carry them Ai-thinker Ra-02 SX1278. Regards !!

    • @AndreasSpiess
      @AndreasSpiess  6 років тому +1

      As you are on 433 with your boards you have to use point-to-point...

    • @PierAisa
      @PierAisa 6 років тому

      Andreas Spiess perfect. Thank you. I'm OM calling IZ4OXX. Regards

    • @PierAisa
      @PierAisa 6 років тому

      I build a raw interfaee for Rpi and Arduino at SPI level. But I'm preparing also a level translator circuit to connect LoRa sensors (3.3V) to Arduino UNO for example. ua-cam.com/video/v58KixUgIsQ/v-deo.html

  • @garrypkeogh
    @garrypkeogh 7 років тому

    Perfect timing (for me) again Andreas, thanks! I have some Heltec ESP32 LoRa boards with integrated LoRa chip and some LoRa32u4 boards with integrated RFM95 modules. The lora library looks very capable and simple from the examples too. This low power long range type project may be the architecture for applications like bee keeping or wide area security or access control like 2-step authentication. Thanks again!

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Did you test the heltec modules? Are they 868 or 915 MHz?

    • @garrypkeogh
      @garrypkeogh 7 років тому

      Andreas Spiess Hi Andreas. Yes, from China they ship with a basic LoRa sketch I didn't explore. I installed a LMiC LoRaWAN sketch using OTAA which works perfectly with my gateway (868MHz RAK831+Pi2+resin.io+permanent mast mounted antenna on my house. Gateway is outdoor, at the base of the 5m mast with PoE and backhaul via TTN. Super easy/robust)
      I want to try plain simple LoRa on the Atmel boards, timing of this vlog is 100%, thanks again!

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Thanks for the update. I ordered now a few of these boards and will do a test with my spectrum analyzer to see how they perform. Stuff for another video ;-)

  • @ZsomborZsombibi
    @ZsomborZsombibi 5 років тому

    I'd just screw a raisable arm to the mailbox, but this technical solution is amazing. Thanks for sharing.

    • @AndreasSpiess
      @AndreasSpiess  5 років тому +1

      There are 6 mailboxes in one box. And I do not see it from our house ;-)

  • @GeekMustHave
    @GeekMustHave 7 років тому

    Most excellent video. The concept of precompiler directives is used in quite a few programming languages, I didn't know it was possible in the Arduino IDE. Thank you. I have a similar system that just uses a cell phone. My packages from China arrive at my UPS Store (like a post office but better), they scan the packages and send my phone a text message with the shipping number. Then I know to drive to the UPS store and something will be there for me. ;-) Keep broadcasting!

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      We got some SMS notice but because so many packets arrive from China they switched it off...

  • @norm1124
    @norm1124 7 років тому

    Happy postman finally he will get a hot coffee on cold days ⛄
    Could be useful to see if the laudery machine is still shaking or already finished 👍

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      These days they do not have time for that. But he will get a gift at the end of the year that he can buy a coffee or two himself

  • @henriklind8588
    @henriklind8588 7 років тому +1

    Great video Andreas. Really useful!

  • @teuluPaul
    @teuluPaul 7 років тому

    Thanks Andreas - a video up to your usual high standard with lots of interesting information!

  • @cameron20020
    @cameron20020 7 років тому

    Another informative and highly detailed video. Excellent!

  • @Keksstar
    @Keksstar 4 роки тому +27

    And now comes the big question after more than two years: Does it still work in your mailbox? :)

    • @chrisstromberg6527
      @chrisstromberg6527 21 день тому +1

      2 years later, we are still waiting for an answer. LOL.

  • @ifthekharahammad5909
    @ifthekharahammad5909 7 років тому +1

    As always, great tutorial, will be helpful in many applications. Thank you.

  • @MontyMontemayor
    @MontyMontemayor 7 років тому +7

    Great video. How about just power on the node through a relay when the mailbox door opened. Zero power consumption when the door is closed

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +2

      You are right. I used this method for a Amazon button (with a FET)

  • @jurglienhard5913
    @jurglienhard5913 6 років тому +1

    Great tutorials, thanks from Switzerland and Kind Regards Jürg Lienhard

  • @r5bc
    @r5bc 7 років тому

    Hello Andreas. thank you for the very good and useful video. please keep up the good work.

  • @publicmail2
    @publicmail2 7 років тому

    I find weather stations transmitters sync transmit times so the transmit and receiver 300MHz turn on, turn off, at the same time and meet back at a later time for battery consumption, pretty simple.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      This is a good idea if both nodes are on batteries. In my case, one node can be connected to mains.

  • @raguaviva
    @raguaviva 7 років тому

    Glad you had fun shooting the video :D i had fun watching it too!

  • @grindel80
    @grindel80 7 років тому

    Hi Andreas. GREAT Video structure. Finally your Channel is my most favorite Channel on UA-cam :) one more Suggestion to improve your work : in This Video you Pop up informative links to diffent topics. Most of us dont want to Interrupt the actual Video by clicking the link and later on its Hard to find the Video Position again. Solution: please add all the mentioned links in the Video description :)

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Thank you for your feedback! I checked it on iPhone and in Chrome browser. In both cases, the cards stayed until the end of the video at the right end of my screen and I was able to click it then. There was no necessity to interrupt the video. Is it different in your case?

    • @grindel80
      @grindel80 7 років тому

      Andreas Spiess in my case the Information stayed for around 3 secound. Than its vanished...

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Strange. Which device did you use?

    • @grindel80
      @grindel80 7 років тому

      i used the newest firefox browser on win10 64bit system... maybe it has something to do with my adblockers.... i will find a way on my own. thx

  • @missionalwayspossible2261
    @missionalwayspossible2261 4 роки тому

    very nice explanation, Thanks

  • @wombat9999
    @wombat9999 7 років тому

    Great video, Andreas. I really like how you're taking various previous things to build a solution to a new problem. You do a great job of explaining everything in detail (or referencing previous videos). I think the 10 thumbs-down are from people who are jealous of what you're doing... ;-)
    You know, if you really want to do a really, REALLY long range test, you could send me a LoRa system, and we can test to see if it'll reach your house (I'll conveniently forget to mention that I live in the US... 8-)
    On a different note, it seems that LoRa doesn't have great coverage in the US -- yet. A few months ago, after watching one of your LoRa videos, I checked a coverage map, and there wasn't much coverage in the Chicago (Illinois, USA) area, which I found surprising. I just checked again, and now there's some coverage, but alas, none in my area (I'm just outside the green area). Oh well, we'll get there...
    Here's the coverage map I used (maybe there's a better one; I don't know) :
    www.senetco.com/coverage/
    Keep up the good work!

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Thank you for your compliment! On shortwave, it would be no problem to reach the US ;-)
      Concerning coverage: Here you find the public LoRaWAN coverage: www.thethingsnetwork.org/map

    • @wombat9999
      @wombat9999 7 років тому

      I believe in giving credit where credit is due. :-)
      Yeah, I didn't think of shortwave! LOL! Maybe do slow scan transmissions as well... 8-)
      Thanks for the pointer to the LorRaWAN map. I hate to say it, but this is even more depressing -- only two (yes, count 'em -- two!) nodes in the Chicago-land area. Very surprising there aren't more. Maybe there are but they aren't registered with the site...?

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      +Wombat999 If they are connected to LoRaWAN they are automatically shown on the map.

  • @keithmaddox1469
    @keithmaddox1469 3 роки тому

    haha, like your videos. The accent cheers me up and makes the video even more fun. I'll bet you'd be a blast to have a drink with and discuss electronics. Keep making the great videos and stay healthy. BTW, how's the weather there in the world's ice cube?

    • @AndreasSpiess
      @AndreasSpiess  3 роки тому

      It was quite warm these days. Around 15 degrees C during the day. I do not live in the mountains where it is much cooler.

  • @jumadhaheri
    @jumadhaheri 7 років тому

    Thank you. This an amazing learning video.

  • @MarkusFotofieber
    @MarkusFotofieber 6 років тому

    Hi AndreasIf you want to lower the power consumption of your arduino, you can remove the voltage regulator and disable brown out (a fuse setting).Thx for your youtube channel. Very inspiring.Markus

  • @yonaguska2050
    @yonaguska2050 7 років тому +1

    I am most grateful for your LoRa videos, I have been looking for a cheap means to support remote telemetry data. I've got a little land here in Texas and I've want to monitor the back property for environment and critter concerns (we have coyotes roaming the area). I'm still in the experimental phase, right now I'm looking at the power budget and deciding what kinds of data I'd like to collect, how best to collect it, and how best to power the remotes. I also want to have the remote unit act as an autonomous coyote deterrent system. I've found coyotes are easily frightened by green lasers, so controlling one or more lasers to sweep the area would probably work.
    I've implemented your point-to-point LoRa nodes, and they are performing beautifully. I have those and two other simple WeMos nodes sending BME280 data to MQTT running on my Mac. Instead of the cloud, I have installed the TICK stack (Telegraf-Influxdb- Chronograf-Kapacitor) and Grafana for collection, storage and visualization of the time-series data. I'm moving these over to a Raspberry Pi as a long term solution. So far, so good. Keep up the great work you do for the community.
    Kind regards,
    -Kirk Franks

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Thanks for your feedback. I also have plans to explore InfuxDB and Grafana, but might not use Telegraf, because I am on Node-Red.
      Fortunately, we do not have the problems with wild animals here. Our place is much more crowded than yours...

  • @avejst
    @avejst 7 років тому

    Thanks for sharing 😀👍, interesting stuff 😀

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      As usual. You are welcome! Thank you for your regular comments!

  • @Gonlinein
    @Gonlinein 5 років тому

    Sir thanks a lot for your project explanation

  • @AlexSlaets
    @AlexSlaets Рік тому

    Hello Andreas !
    I've started experimenting with LoRa point-to-point.
    So, I've built a sender and a receiver-mqtt forwarder using ESP32's and SX1276 modules.
    The receiver listens to LoRa packets which must contain two subsequent c_strings (zero terminated char[]) . The first string is the MQTT subtopic , the second is the string value to be published. In this way the receiver-forwarder can handle data from any sensor I may want to build and Home Assistant MQTT platform will receive the correct values.
    In addition the receiver publishes the RSSI as a sub-sub topic.
    eg:
    lora/sensor1/counter = "130" incremented in every loop by the sender.
    lora/sensor1/counter/rssi = "-90" added MQTT message by the receiver.
    The modules are equipped with small wire spiral antennas. Not the best. The range I get at SF7 and BW 124E3 is about 450 meters in built-up area (city) . Not bad, and more than sufficient for sensors out of WiFi range. It stops rather abruptly at and RSSI of about -120.
    I tried to use a different SF and BandWidth for the sender and the receiver, and this does not work. It seems both must be set to the same values. I guess this is a limitation of building your own P2P connection instead of using LoRaWAN ? I understand the WAN implementation of LoRa, with Gateway based on SX1302 can do "adaptive data rates", i.e. modify the SF and BW parameters based on the network conditions.
    Did I understand this correctly or is there a way to adjust SF and/or BW built in the modules ?
    And BTW : thanks for the inspiring video's !

    • @AndreasSpiess
      @AndreasSpiess  Рік тому +1

      Both ends have to have exactly the same modulation selected, you are right. But you should be able to select the transmitting as well as the receiving parameters.
      The Gateway chip is an exception because it can adapt to the SF to match the transmitter.

    • @AlexSlaets
      @AlexSlaets Рік тому

      @@AndreasSpiess Thank you. By 'you should be able to select' do you mean the calls to LoRa.setSpreadingFactor and similar as the way to select them ?

    • @AndreasSpiess
      @AndreasSpiess  Рік тому

      @@AlexSlaets All parameters have to be the same, not only the SF. I do not know how you program your module.

    • @AlexSlaets
      @AlexSlaets Рік тому

      @@AndreasSpiess with arduino ide. I use a block of #defines with all Lora parameters which I use in sender AND receiver .ino . Guess I could put these #defines in a local.h file .

  • @ufohunter3688
    @ufohunter3688 7 років тому

    Damn... I just finished my mail box notification project last night. Talking about ESP (extra sensory perception)!!
    It consists of an ESP2866-01 powered by a LP2985-3.3 regulator that has an enable pin, Oddly enough, this regulator has a marking of "LORA" printed on top of the IC!!
    The ESP8266 once powered-up, sends an email and goes back to deep sleep until the Attiny powers down the regulator.
    This is how it works: A magnetic switch (I have a few left over from my alarm installation), is connected to one of the pins of the ATTiny85 through a 470K resistor to a +4.8V (4x12V NiMH) supply and ground, which is also being charged by a solar panel through a schottky diode and prevented from over charge by a 1 Watt 5.1V Zener. The Attiny is directly powered by the battery and is in sleep mode all the time.
    When the mailbox door opens, the reed switch opens and takes the interrupt pin high through the 470K resistor to the battery, which awakens the ATTiny85. Which in turn enables the regulator through the enable pin of the regulator, which in turn powers-up the ESP8266-01 module.
    The ESP8266, upon power-up, will log on to my router and sends me an email saying "You've got mail" :)
    Then, it goes to sleep. This process takes < 10 seconds. After 20 seconds, the ATTiny will disable the regulator and the ESP8266 will be turned off. Even if the mailbox door is left open (due to big packages). it will go to sleep until the mailbox door is opened again. Consumes only

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Thank you for your feedback. And I learned something: I forgot about the "door stays open scenario). With my interrupt this will be ok, but not with the concept proposed by others where the power is managed by the reed switch...

    • @ufohunter3688
      @ufohunter3688 7 років тому

      Yeah, If it wasn't for that pesky door being left open, I had it in the bag with one transistor, diode, capacitor, and 2 resistors. It would catch and hold even the fastest door opening and closing. power the ESP for a minute and then go out. (R/C-discharge the base of the transistor).
      There are more than one way to skin a cat, as cat lovers would NOT say. :)

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      :-))

  • @AbcDef-hl2ic
    @AbcDef-hl2ic 7 років тому

    Great video! Congrats and thanks!

  • @garycmartin
    @garycmartin 7 років тому

    Hi Andreas, to get to SF11 and SF12 with the RFM95 there is a poorly documented register called LowDataRate (bit-4, register 0x26) that allows receiving the slower/longer symbol transmissions. It's not obvious in the usual RFM95 datasheets, but googling should track down some examples (using the RadioHead library). The price for that extra range is the doubling of transmit air time with each step up in SF (and the extra power that takes).

  • @thesimbon
    @thesimbon 7 років тому +10

    Hello Andreas, if could take a look at mysensors.org you will find a library that handles pretty much all you need (communication and sleep of arduino) and there are also instructions on how to lower sleep power: removing the led is ok, but you also need to remove the pro mini voltage regulator; with that removed I get less than 5 uA from my battery powered nodes (that are also using the same soshine batteries)

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      1. I have to look into this "mysensors". Looks promising...
      2. Thanks for the tip concerning the regulator.

    • @thesimbon
      @thesimbon 7 років тому

      I hope to see you soon posting on the forum over there :)

    • @nutcracker1684
      @nutcracker1684 7 років тому

      MySensors definitely the way to go!

  • @yomboprime
    @yomboprime 7 років тому

    Hi Andreas very good idea! I will try to do the same if I can.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      I am sure you can, if you want ;-)

    • @yomboprime
      @yomboprime 7 років тому

      Yes! “Do. Or do not. There is no try.” xD

  • @andresperez5020
    @andresperez5020 7 років тому

    Nice video. I have some problem with battery life and i solved unplug the led of arduino.

  • @JungleJake1664
    @JungleJake1664 7 років тому

    Thanks for a brilliant Video

  • @abrahammagnifico9538
    @abrahammagnifico9538 7 років тому

    i love the way you say" baaaye" at the end lol

  • @chrisharvie-smith486
    @chrisharvie-smith486 7 років тому +4

    So why not run the power through the reed relay for 0uA off power consumption? Just add a output to a fet to hold it on until tx rx done and pass the 120mA if too much for the relay.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      I did this with one of my Amazon Dash buttons. It is possible and very efficient. The problem is when the door stays open (for big things)

    • @miguelburgoslopez
      @miguelburgoslopez 7 років тому

      And Idea could be to add second fet as trigger for the sensor fet, in case the sensor fet stays open for x time... them, controler put low the trigger fest to power off everything, is a quick solution don't know if will work, will be necessary to add a button to reset the trigger fet state.

  • @peekpt
    @peekpt 7 років тому

    I did a test with rf24 and reached 1km no worries. This project is interesting but you can use that cheap window/door sensors which battery last 1year+ and connect's to wifi broker only 5$ . Sometimes we need to keep it simple. Unless you wifi can't reach the mailbox.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      +Short to Ground My WiFi definitively does not reach the Mailbox.
      Line of sight usually is no problem. I got more than 200 km with one of these RRM95 modules...

    • @peekpt
      @peekpt 7 років тому

      wow 200km!! must check this modules asap!

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      But maybe you watch my video first. This was a world record and is not usable for daily usage...

    • @peekpt
      @peekpt 7 років тому

      What module you recommend for communication use in forest (airsoft games) with trees, I want to develop like a solder beacon with a display to give colleagues some status. I need cheap solution. I'm in Portugal, the air space is so restricted by the rules. Was thinking like RF24Mesh, but it can be very messy

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      You have to experiment. RF signal behavior is not easy to forecast. NRF24 chips are on 2.4 GHz, LoRa is on 868 or 433 MHz. They have different behavior and also bandwidth

  • @kubikmann
    @kubikmann 3 роки тому +1

    Hello, nice video ! I'd like to ask what kind of sensor have you used for mail presence detection in a mailbox. Thanks.

  • @rubensluciano7708
    @rubensluciano7708 7 років тому

    Hi Andreas. Nice video, again! in the beginning i was thinking you will send by mail a package with a lora node inside and track the way it makes until the destination using the drone as a high altitude receiver... amateur radio brains always flying to much :) 73.

  • @Rubafix989
    @Rubafix989 7 років тому

    Great video

  • @yashpandit832
    @yashpandit832 5 років тому +2

    I had one doubt, sir. What if someone buys an RFM95 module and programs it to send a crap message continuously all the time on a channel at say SF7. As this module will not follow any MAC protocols will it block all other LoRa communication of other modules using that channel?
    Am I going wrong in my concept? If yes please correct me and if no it seems to be a big problem!

    • @AndreasSpiess
      @AndreasSpiess  5 років тому +2

      Every wireless transmission can be disturbed. You do not need a particular signal for that.

    • @yashpandit832
      @yashpandit832 5 років тому

      @@AndreasSpiess thanks a lot. You are always the one who replies to my doubts. Thank you!

  • @NiagaraTridium
    @NiagaraTridium 2 роки тому

    Great video, I was very interested in your drone LoRa test, was this 433MHZ LoRa or another Frequency like 868MHZ ?

    • @AndreasSpiess
      @AndreasSpiess  2 роки тому

      I do not know which test you refer. I use LoRa on 433 and on 868 but most videos are bade with 868MHz

  • @georgewashington421
    @georgewashington421 5 років тому +1

    LoRa - Long Range Radio
    Thanks for your LoRa videos, I now understand LoRa a bit better and think it may provide an answer. Help, I need to replace a VERY SHORT range 433Mhz remote Gate Opener. I need at least a 150 Meter range (would like 300+ M), currently have about 10m with an exterior antenna. I am currently using an ESP-32 to ‘assist’ the Gate Opener Control board with remote sensing and operations (house is 160m+ away) I can Open, Close, Hold Open the gate from my home network (and more). I thought I could use a D-1 mini in the car with a LoRa transmitter and a simple push button. The LoRa receiver would connect to the existing ESP-32 in the Gate Opener box.
    Questions:
    1-Can I encrypt the transmission?
    2-How can I use the received transmission on the ESP-32 to trigger an event (opto-isolated relays I have)
    3-Can the ESP-32 LoRa receiver transmit a CONFIRMATION back to the remote LoRa (D-1 Mini) in the car? (eg. buzzer/beep/LED blink)
    Any suggestions or direction to another video/Instructables tutorial would be appreciated. Thanks

    • @AndreasSpiess
      @AndreasSpiess  5 років тому

      I am a UA-camr and give my advice in my videos. Unfortunately I do not have the time for consulting, but I am sure you will find the answers using Google.

  • @keithmaddox1469
    @keithmaddox1469 3 роки тому

    It's an ice cube here too BTW

    • @AndreasSpiess
      @AndreasSpiess  3 роки тому

      For the moment it is ok during day and still cold in the nights.

  • @pavelmynarik2325
    @pavelmynarik2325 7 років тому +1

    Hello Andreas, great video as always!
    I'm little bit concerned about temperature and baterry life? Will it really works during freezing winter times?

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Well possible. I have to check. But I can always go for 2 AA cells.

  • @sborkes
    @sborkes Рік тому

    Very nice tutorial.
    It is rasonable to have a single receiver and multiples sender sending messages at different times? I don't want to build a LoRaWan gateway, but keeping it offline

    • @AndreasSpiess
      @AndreasSpiess  Рік тому

      Of course you can use multiple transmitters and one receiver as long as they do not transmit at the same time.

  • @tomasallegrini2503
    @tomasallegrini2503 5 років тому

    Hi, i am trying to make the node on a breadboard, but i can t figure out which pins in the lora module (sk1278/rf95) are: CS, IRQ , i am using the lora module with a breadboard adapter, so far i found this tutorial and library the most simple, as i can see from your videos. Thanks

    • @AndreasSpiess
      @AndreasSpiess  5 років тому

      Maybe you have a look here: github.com/hallard/WeMos-Lora

  • @iceberg789
    @iceberg789 7 років тому

    nice. we all know how it feels to wait for the mails from china. i also need something like this, but the door remains closed, so need some other kind of sensing workaround.

  • @woolfy02
    @woolfy02 2 роки тому

    If I build my own gateway, can I connect to other LoRawan gateways to communicate with them? (Still confused about that). If possible, Id love to see a new updated video for 2022. thanks

    • @AndreasSpiess
      @AndreasSpiess  2 роки тому +1

      Maybe you watch my LoRa introduction video. Gateways are connected to the TTN network (computer network), and not to other gateways.

  • @joinedupjon
    @joinedupjon 6 років тому +1

    Thanks for the great video
    My dad has a wireless doorbell that works by harvesting the power of a person pushing the button using a piezo element, there's no battery on the transmitter side. if you could get the power of the letterbox module low enough do you think harvesting the postman's effort in opening the slot would be possible?

    • @AndreasSpiess
      @AndreasSpiess  6 років тому

      Interesting concept. Never heard that this works. I think, the energy produced is quite small and the device has to be very low power. For the technology I use and the letterbox I do not think it would work.

    • @joinedupjon
      @joinedupjon 6 років тому

      Thanks for replying - he bought it on amazon where it was listed as a wireless and battery free but there are now similar units on banggood. I'm quite surprised it works, but it does.
      I've no idea what the power is but it must be quite tiny.

    • @johnywhy4679
      @johnywhy4679 3 роки тому

      @@joinedupjon Passive RFID harvests power from the radio waves. Opening the mailbox would prolly generate a lot energy.

  • @omaryanas435949
    @omaryanas435949 7 років тому

    Simply Amazing!

  • @mostlymessingabout
    @mostlymessingabout 7 років тому

    Super useful thank you

  • @cewaffles
    @cewaffles 2 роки тому

    I know this is old, but do you have a shopping list for the items again or ones that will work? Thanks again for the Great Videos!

    • @AndreasSpiess
      @AndreasSpiess  2 роки тому +1

      All ESP32 LoRa boards from TTGO or Heltec should work. You can select the board with the features you need for your project. Pay attention that you chose the right frequency.

    • @cewaffles
      @cewaffles 2 роки тому

      @@AndreasSpiess Thanks!

  • @hannguyen2656
    @hannguyen2656 Рік тому

    Thanks for your contribution to the community, I have a question is that in this video, the node called "Receiver" is not be called "gateway" just because it did not send data to the server right? I am quite confused

    • @AndreasSpiess
      @AndreasSpiess  Рік тому

      You could call it gateway if you want. Gateway is used for TTN and has a specific meaning. This is why I used the word receiver.

    • @hannguyen2656
      @hannguyen2656 Рік тому

      @@AndreasSpiess Thanks for your reply sir. I just don't understand why we need to register a gateway in TTN, to save data Can I use another one like Thingspeak or Nodered?

    • @AndreasSpiess
      @AndreasSpiess  Рік тому

      @@hannguyen2656 TTN needs to know where to transfer your messages ;-)

  • @abdelilahbouslama2098
    @abdelilahbouslama2098 7 років тому

    HI.
    thanks for your awesome series of videos. they are very useful
    if it's possible to send you architecture of system where you can show us what materiel to use in order to create a complete system using sensors, LORA, MQTT?
    thanks for your help and your understanding

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      I think this video showed a sensor (reed switch), LoRa transmission and MQTT transmission in one system.

    • @abdelilahbouslama2098
      @abdelilahbouslama2098 7 років тому

      First of all thanks for your feedback and your help.secondly i'm still beginner and i want know the best materiel(sensors, gatways) i can use in order to create large LORA network(without internet) using MQTT as communication protocol.
      Thanks for your understanding and your help

  • @theUsesOFnot
    @theUsesOFnot 5 років тому

    Another great video Andreas! I'm fine with programming but sketchy with electronics. What Lora enabled devices would you recommend that are easy to use and low power for point-to-point? I mostly use ESP32 or 8266 boards and Teensy, Arduino Nano. I need the sender to be battery operated with temperature, humidity and light sensors, and the receiver to post the data using WiFi to an https based web service. I understand what to do at the WiFi end to post data to the server, but I'm new to Lora and don't know what components to buy that don't required soldering, breakout board construction, etc.

    • @AndreasSpiess
      @AndreasSpiess  5 років тому

      Maybe you watch my other LoRa videos? Your question has no short answer.

  • @rominej
    @rominej 4 роки тому

    Hi Andreas, thanks for the content. Can you approximate the distance from the mailbox to your kitchen? I'm curious how well these penetrate mailboxs.

    • @AndreasSpiess
      @AndreasSpiess  4 роки тому

      The distance is not the problem. All losses are in the obstacles.

  • @venkateshe7506
    @venkateshe7506 7 років тому

    Excellent again. How are you generating voice ?? TTS ?? Thanks again.

  • @patricf209
    @patricf209 7 років тому +1

    Your channel ist brilliant.
    I´m new to lora. Would it be possible to communicate with tcp/ip peer to peer?
    I´m thinking of something like packet radio (maybe ax25?) over greater distances than wifi - and where los is not given. The datarate has not to be very high (but >9600kbit?)
    May you do a video about that. Thx and keep on.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      1. TCP/IP has probably a lot of overhead.
      2. Packet Radio would be possible. The question is more if you want to build such an infrastructure with addressing etc.
      3. The speed depends on the modulation. I think you can look it up in the datasheet. In "LoRa" applications it is only a few bits per second, but the range is good.

    • @jnevercast
      @jnevercast 5 років тому

      LoRa would be a poor choice for TCP/IP pair-pair communication. Andreas is correct that there is a lot of overhead. There is also aggressive duty cycle limits and low data rate. LoRa is for long range devices that send very small amounts of data very infrequently. TCP/IP does not pair well here.

  • @mumbaiverve2307
    @mumbaiverve2307 5 років тому

    Hi Andreas, your tutorials are superb. Thanks for doing a lot of the "heavy lifting". Just one question, can this be extended for multiple end nodes connecting to one "master" node ?

    • @AndreasSpiess
      @AndreasSpiess  5 років тому +1

      That would then be a network like LoRaWAN

  • @Edsdrafts
    @Edsdrafts 8 місяців тому

    How is this working for you long term? Have you changed / upgraded anything and if you did it again what would you use again.
    I am very interested in a similar project myself.

    • @AndreasSpiess
      @AndreasSpiess  8 місяців тому

      I use now LoRaWAN (TTN). But this is of personal preferences...

    • @Edsdrafts
      @Edsdrafts 8 місяців тому

      @@AndreasSpiess I only started looking into LORA solutions today trying to make a small project where as I approach home in my car with presumably one LORA module another one at home picks up a broadcast of sorts and powers on driveway lights for 30sec. I am down the LORA rabbit hole am I getting nowhere near a solution hence me asking.
      LORAWAN seems amazing but way over my head. Ideally I was hoping for Arduino (I have couple of R4 WiFi that just came in) with plug and play LORA module of sorts for the job. Point to point only as range I need is 50m or less main focus is power saving.
      In future I can also add a 6 axis IMU for if the vehicle is moved the lights come on etc. Bit of security on top of convenience.
      I will keep an eye on your channel for something along these lines for a solution. Mind you I know very little to begin with so it might take me a while...
      Keep up the good work.

  • @wyealex
    @wyealex 5 років тому

    Thanks Andreas. If I understand correctly, contrary to your earlier LoRaWAN videos, is there no encryption on the signal that you are sending? I am sure encryption could be added to a point to point system if it is necessary but just to aid my understanding - anyone could listen-in to hear your altitude and mailbox status if they had a LoRa setup?
    Also, if someone were transmitting data on the same channel, how do you filter-out unwanted transmissions on your receiver? You can easily imagine the situation where two or more people are transmitting data, e.g. drone altitude or soil moisture, on the same channel and without some filtering or encryption, there's no way of knowing if your drone is at 50m or your soil has 50% moisture content!

    • @AndreasSpiess
      @AndreasSpiess  5 років тому +1

      All wireless system share the same problem: They do not work if the frequency is occupied. The messages of these two methods are not encrypted.

    • @wyealex
      @wyealex 5 років тому

      @@AndreasSpiess All understood. Thanks again!

  • @huaminghuang
    @huaminghuang 4 роки тому

    Hi, thanks for your efforts!
    In your video tutorial, it‘s point-to-point communication.
    Do you have any recommendations for point-to-multi-point communication via LoRa? I.e, how to make sure delivery from each node. As far as I know, LoRa only allows for receiving messages from one node at once. So that would be a problem.

    • @AndreasSpiess
      @AndreasSpiess  3 роки тому

      This is a complex topic. Maybe you watch also my videos about LoRaWAN?

    • @johnywhy4679
      @johnywhy4679 3 роки тому

      Send to FFFF.
      ua-cam.com/video/JvBC7cEgI0E/v-deo.html

  • @LevyCarneiro
    @LevyCarneiro 2 роки тому

    Is there a library with some very basic encryption for point to point Lora without Lorawan? I suppose it’s something that will become more important as more people start using Lora, and we will need a way to prevent people from hacking each other’s signals.

    • @AndreasSpiess
      @AndreasSpiess  2 роки тому +1

      I do not know how the LoRa library handles encryption. But you find an AES128 library if you want to do it yourself...

    • @LevyCarneiro
      @LevyCarneiro 2 роки тому

      @@AndreasSpiess apparently LoRa itself is just a physical layer without any addressing etc, but I saw your video where you use AES128 and that’s exactly what I was looking for. Thanks!

  • @goofypettiger
    @goofypettiger 3 роки тому

    well done

  • @igfuenzalida
    @igfuenzalida 3 роки тому

    Hi Andreas, greetings from Chile.... I've been following your work and is really good. however, I have a small question. seeing the example codes you have shown, the connection between the nodes is secure? for example, any receiver with the right frequency can receive the data sent from the sender? thanks in advance and amazing job! =)

    • @AndreasSpiess
      @AndreasSpiess  3 роки тому +1

      Everybody can receive it as with all wireless communication. You have to watch my video about encryption if you do not want that the content is readable

    • @igfuenzalida
      @igfuenzalida 3 роки тому +1

      @@AndreasSpiess Thanks for the quick response! I will look up your video about encryption and test it out! best regards and thanks!

  • @SagarShelarB
    @SagarShelarB 6 років тому

    Very inspiring video. Could you please mention for how many days this battery will work? Or do you know any battery which will work for at least 6months?

    • @AndreasSpiess
      @AndreasSpiess  6 років тому

      I did not test so I do not know. But you can do some calculations to find out.

  • @rubenyeet8963
    @rubenyeet8963 5 років тому

    very good instruction. i wan to try this with a raspberry pi as reciever and an arduino with dragino shield as sender. and in the future multiple arduinos. is this do able? and how?

    • @AndreasSpiess
      @AndreasSpiess  5 років тому

      You have to find the right software for the Raspberry. I never used one for that purpose. I used a Dragino for another video. Maybe this helps.

    • @rubenyeet8963
      @rubenyeet8963 5 років тому

      @@AndreasSpiess I have it working but thank you for the help

  • @joostwestra
    @joostwestra 7 років тому

    Nice video. How does the power usage compare to only an Esp8266 with same use case? (using the trick where you completely turn off the Esp8266)

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      I made some videos about ESP8266 in low power applications

    • @joostwestra
      @joostwestra 7 років тому

      I was referring to "#101 Long lasting DIY "Amazon Dash Button" using an ESP8266" indeed. When you are in wifi range that would result in much better power efficiency right? Really liked that one as well btw.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Differences in power consumption come from 3 areas:
      1. Duration of sending (high power): LoRa is usually shorter because Wi-Fi has to connect to Wi-Fi first
      2. Power consumption during sending: I have no data here
      3. Power consumption during the shutdown. Here, the two concepts are also comparable.

  • @markusrohner9452
    @markusrohner9452 7 років тому

    Great stuff as usual. What I was most impressed with was Alexa speaking an individual text. I thought this skill is not available yet. How did you do that?

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      It was Node-Red speaking, not Alexa ;-)

    • @banknote501
      @banknote501 7 років тому +1

      Could you please make a video explaining how to do this? Sounds really cool.
      BTW: Great video as always.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      In my node-red installation, I have an "audio out" node in the dashboard section. I use Peter Scargills script to install node-red.

    • @markusrohner9452
      @markusrohner9452 7 років тому

      Yes, I have the same installation, to be used on the node-red dashboard though. I'm waiting for Alexa free speach support. Thanks

  • @paulmacgiollacaoine8619
    @paulmacgiollacaoine8619 7 років тому

    Hello Andreas, thanks for the super video. I have a similar setup using raspberry pi’s approx 1.2kms apart, I’m struggling to get messages through though. I’m curious how you measured RSSI signal strength, could you explain briefly? Thanks.

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      The RSSI comes from the module itself

    • @paulmacgiollacaoine8619
      @paulmacgiollacaoine8619 7 років тому

      Thanks Andreas, is that from the local module? How do you measure RSSI in your case?

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      The code reads the RSSI from the RFM95. Probably not very accurate, but ok for an indication.

  • @AerialSwiss
    @AerialSwiss 7 років тому

    Hallo Andreas, danke für dieses Video. Wo hast du dieses Multimeter gekauft um den Verbrauch zu messen?

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Meinst du das uCurrent gold? Das kriegst du hier: www.eevblog.com/product/ucurrentgold/ . Ich hatte es in UK gekauft, aber den Shop gibt es nicht mehr.

  • @fredericguiet2077
    @fredericguiet2077 7 років тому

    Hi Andreas! Another great video. I am the guy with the French accent :) Just one question (in this mode node to node communication), how do you know to which LoRa node you are sending data to ? With Xbee for instance you specify an address but if you've got multiple LoRa receiver nodes how doest it work ? Thank Fred

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      In my case, I did not use addressing. RadioHead library has such use cases. And also RadioShuttle supports this (see link)

  • @Livefreeman
    @Livefreeman 6 років тому

    does frequency has any effect on range. from your videos I learned that for each country, there is a specific frequency , Canada frequency is 915 Mhz however the module is more expensive than lower frequency module, so I am wondering if I can use lower frequency module in Canada, would that affect range. I will use it on drones mainly, so range is important

    • @AndreasSpiess
      @AndreasSpiess  6 років тому

      If you are interested in such questions I made two videos about wireless communications.

  • @tejaslotlikar8482
    @tejaslotlikar8482 5 років тому

    Nice tutorial, can i built both nodes using 2 Arduino pro mini instead of ESP8266 because i do not intend connecting it to nodeRED?

  • @yonaguska2050
    @yonaguska2050 7 років тому

    Andreas,
    I'm building your point-to-point LoRa nodes and using them to convey remote BME280 sensor readings to a MQTT gateway. With MQTT left undefined, I was able to get the link up and sensor data flowing. However, when I defined MQTT I ran into a problem. I get a compile error on the credentials.h file. Is this a local file or something pulled from Github with a library? I'm also not getting the OLED to display, but that's something I should be able to troubleshoot.
    I think I'm going to throttle the sender, I'm not getting all of the sensor data over at the receiver and I think I'm maybe overextending the sender's capabilities.
    Thanks,
    -Kirk Franks

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      1. I have the credentials.h in a different folder in my libraries folder. Like that, I can use is from all sketches.
      2. I never did performance tests on LoRa. But I would assume, that the speed of the sender and the receiver are the same if they understand each-other. I would first search in the timing of the receiver sketch and would do a very simple sketch which only prints or even better, only stores the data (without delays). Then you know where to start your improvement.

    • @yonaguska2050
      @yonaguska2050 7 років тому

      Thanks Andreas,
      I should have thought of that for a reason for the credentials.h file, I've used that technique myself for similar reasons. So that's a 'Doh' for me. Lol!
      The performance issue appeared to have subsided, no more lost packets.
      Kind regards,
      -Kirk Franks

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      :-)

  • @mzsolnay
    @mzsolnay 2 роки тому

    Grüetzi Andreas !
    I was happy to find this video from you, becouse that is exactly what I wanted to do. Point to point LoRa communication between two arduinos. Reciever forwarding messages to mqtt. I have two RFM95W modules. For the sender I wanted to use an arduino nano board, for the receiver an Arduino Nano IoT board. Right at the start I am struggeling to understand the pin layots. Comment in your code said "LoRa.setPins(10, A0, 2); // set CS, reset, IRQ pin", but the only one I could indentify on the RFM95W was 'reset'. No 'CS' or 'IRQ' there. Only MISO, MOSI, SCK, NSS, etc. Can someone explain, what pin goes where?
    Many thanks !

    • @AndreasSpiess
      @AndreasSpiess  2 роки тому

      You have to look at the library you use. Or on other projects using the same library. Not all use the same pinout.

  • @pjotrekse
    @pjotrekse 7 років тому

    Hello Andreas, and thanx again! My mailbox is 900m away through a pine forest here in snowy Sweden. And the mailman takes a detour away from me if there is only little mail on tuesdays and thursdays... Do you think there is a chance it would work for me?
    Greetings from the wide forests by the great lakes, Peter

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Your use case seems to be very rewarding, especially in winter. I just would try it. The investment is not big, the reward big, and the chance to succeed not really bad if you have a line of sight. Only trees should be ok, but I do not know how many meters of trees are acceptable.

  • @digitalzoul57
    @digitalzoul57 2 роки тому

    Hi Andreas you mean at SF=12 you have bad RSSI ? or you donot receive any signal ?

    • @AndreasSpiess
      @AndreasSpiess  2 роки тому

      SF12 works with a lower RSSI than for example SF7. But it is much slower.

  • @halukyilmaz9621
    @halukyilmaz9621 7 років тому

    Thanks you mate :) with swiss style :P

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +1

      You are welcome. Where are you from?

    • @halukyilmaz9621
      @halukyilmaz9621 7 років тому

      i am from Turkiye, my objective is smart city and energy , hope will handle it, been working along with mqtt and esp12e but long area , it requires hotspot so i started to learn LoRa

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      Good luck!

  • @settisa604
    @settisa604 3 роки тому

    great ..as always ..
    your tutorials are always helpful :)
    may i ask for something?
    could you please make a tutorial for a ( LoRa Node >>Dragino gateway >> MQTT >> Raspberry pie Mosquito Broker >> Node-Red {in a local area without ant internet connection}) tutorial ?

    • @AndreasSpiess
      @AndreasSpiess  3 роки тому

      You find these things in my videos. Just not in one...

    • @settisa604
      @settisa604 3 роки тому

      @@AndreasSpiess thanks sir

  • @OldCurmudgeon3DP
    @OldCurmudgeon3DP 6 років тому

    GPS says my 2 nodes would be about 6.7km apart with (it seems) only trees in the way at the remote end. Based on your testing, would this be possible with the smaller "rubber duck" or maybe dipole antennas from your world-record distance video? I need to monitor a small weather station that has 1 or 2 additional sensors on interrupts.
    Keep up the great work on the videos. I've learned a lot watching them. :)

    • @AndreasSpiess
      @AndreasSpiess  6 років тому +1

      Just try it. Predictions are not easy. With a line of sight, it will for sure be possible.

  • @nicklaspersson4687
    @nicklaspersson4687 7 років тому

    Perhaps a metall detector/sensor but the mailbox is metal so that might be tricky :-)

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      And also the energy consumption would probably be much higher. A distance sensor which is activated from time to time maybe would be a possibility.

  • @NicksStuff
    @NicksStuff 11 місяців тому

    I have a question about the 1% duty cycle...
    Can you consider you're getting mail and packages once or twice a day and you'll open the the mailbox once or twice a day that that's good enough (in relation with the regulations, I mean)?
    Or should you write your code so that it's impossible to go over the 1% duty cycle, even if some idiot is playing with your letter slot like a lunatic and triggers it every 5 seconds?

    • @AndreasSpiess
      @AndreasSpiess  11 місяців тому

      You can easily calculate that your scenario is not problematic. Some libraries automatically enforce the 1% limit. BTW: if you use SF7 instead of SF12 you can transfer many more messages in the 1%...

    • @NicksStuff
      @NicksStuff 11 місяців тому

      @@AndreasSpiess The calculation is easy indeed but I was wondering about the enforcement of the duty cycle. Is the math for a normal use case enough or do you *need* to implement it in your code?

    • @AndreasSpiess
      @AndreasSpiess  11 місяців тому +1

      @@NicksStuff To be honest: I do a rough calculation and try to stay below it. Knowing that it does not hurt anybody if I am a bit too high for a few hours... I am an engineer, not a lawyer ;-)

  • @PhG1961
    @PhG1961 7 років тому

    Great video ! Mail from China has arrived... I guess your mailbox also gets mail from Switserland and elsewhere. So, the message is a little confusing ;-)

    • @AndreasSpiess
      @AndreasSpiess  7 років тому +2

      Mail from Switzerland is never interesting for me. Mostly bills...

  • @uforex911
    @uforex911 7 років тому

    Hi Andreas, have you tested this library with ESP32 and is Lora module compatible with it?

    • @uforex911
      @uforex911 7 років тому

      Because I’m trying to make one ESP32 Sender and one ESP32. Sorry if this is a rookie question XD

    • @AndreasSpiess
      @AndreasSpiess  7 років тому

      No, I did not test it. But I think it should work.