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Gadget Sideload
Canada
Приєднався 14 кві 2018
Stuff that couldn't be wedged in elsewhere...
Fixing Time Set Buttons on an Old Clock Radio
The buttons on this old clock radio don't make good contact so setting the time is difficult - button presses don't respond or the digits jump far ahead. Time to diagnose and fix it.
Deoxit contact cleaner
Amazon.ca: amzn.to/3XtFr30
Amazon.com & others: amzn.to/47dSOYq
MG Chemicals contact cleaner
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Amazon.com & others: amzn.to/3ASzqEe
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If you'd like to support the channel, you can:
Support me on Patreon: www.patreon.com/gadgetreboot
Shop through my affiliate links (I may earn a small commission, costs you nothing)!
Banggood www.banggood.com/custlink/3vKYLANH8N
Aliexpress s.click.aliexpress.com/e/_AFeHwB
Amazon.com www.amazon.com/?&_encoding=UTF8&tag=gadgetreboo05-20&linkCode=ur2&linkId=952875a3564e2204d1786f94b9e1a8d3&camp=1789&creative=9325
Amazon.ca www.amazon.ca/?&_encoding=UTF8&tag=gadgetreboot-20&linkCode=ur2&linkId=70fa82315ac48f03342938bd4fb93535&camp=15121&creative=330641
Deoxit contact cleaner
Amazon.ca: amzn.to/3XtFr30
Amazon.com & others: amzn.to/47dSOYq
MG Chemicals contact cleaner
Amazon.ca: amzn.to/3ThL2qt
Amazon.com & others: amzn.to/3ASzqEe
Note: I may earn a small commission from qualifying Amazon purchases
If you'd like to support the channel, you can:
Support me on Patreon: www.patreon.com/gadgetreboot
Shop through my affiliate links (I may earn a small commission, costs you nothing)!
Banggood www.banggood.com/custlink/3vKYLANH8N
Aliexpress s.click.aliexpress.com/e/_AFeHwB
Amazon.com www.amazon.com/?&_encoding=UTF8&tag=gadgetreboo05-20&linkCode=ur2&linkId=952875a3564e2204d1786f94b9e1a8d3&camp=1789&creative=9325
Amazon.ca www.amazon.ca/?&_encoding=UTF8&tag=gadgetreboot-20&linkCode=ur2&linkId=70fa82315ac48f03342938bd4fb93535&camp=15121&creative=330641
Переглядів: 60
Відео
How To Install a Cat6 Wall Jack and RJ45 Plug on Cat6 Cable
Переглядів 1,7 тис.Місяць тому
Installing a new Cat6 Keystone jack in drywall and crimping an RJ45 plug on the other end of the cable. Network tools and parts used (I may earn from purchases made on Amazon, costs you nothing extra): Cat6 Wall Plate with Keystone Jack Amazon.ca amzn.to/3VZzx7R Amazon.com & others amzn.to/3XQrHjq Cat6 RJ45 Plugs (pass-through holes) Amazon.ca amzn.to/3Lf8aSc Amazon.com & others amzn.to/3Lhyjjm...
ESP32 Modules with CH340 USB Chips Running at 5V instead of 3.3v on Tx/Rx?
Переглядів 2,7 тис.3 місяці тому
These ESP32 modules have a CH340 USB chip configured to run at 5v instead of 3.3v so I'm fixing these. Some modules also have weird wifi signal strength issues but I can't seem to improve that on all of them. Discussion on ESP32 with CH340 issues community.home-assistant.io/t/something-is-very-wrong-with-the-wifi-on-the-esp32-boards-i-ordered-from-aliexpress-is-there-any-way-to-salvage-these-an...
NES Fix by Cleaning 72 Pin Connector
Переглядів 1,2 тис.4 місяці тому
I was able to get two NES systems working just by using an electrical contact cleaner spray on the 72 pin connector. At least in this case, there was no need to replace the connector, bend pins, or remove and boil in water. Deoxit contact cleaner Amazon.ca: amzn.to/3XtFr30 Amazon.com & others: amzn.to/47dSOYq MG Chemicals contact cleaner Amazon.ca: amzn.to/3ThL2qt Amazon.com & others: amzn.to/3...
Addressable LEDs with ATTiny 0-Series in Arduino IDE
Переглядів 1354 місяці тому
Using the MegaTinyCore for the Arduino IDE, there is built in support for addressable LED control with the ATTiny 0-Series parts. If you'd like to support the channel, you can: Support me on Patreon: www.patreon.com/gadgetreboot Shop through my affiliate links (I may earn a small commission, costs you nothing)! Banggood www.banggood.com/custlink/3vKYLANH8N Aliexpress s.click.aliexpress.com/e/_A...
Broken Remote Buttons? How to Fix
Переглядів 4,9 тис.5 місяців тому
Remote control buttons can be fixed sometimes by cleaning with alcohol, coating the pad and pcb with pencil markings, or sometimes by replacing a worn out conductive pad as shown here. Spudger tool to help pry open the remote: Amazon.ca: amzn.to/43MEF2C Amazon US and others: amzn.to/43HUUOv Button pad repair kit: Amazon.ca: amzn.to/3VRAIYi Amazon US and others: amzn.to/4aAK6ni Note: I may earn ...
PT2399 Echo Circuit Walk Through and Demo
Переглядів 3 тис.7 місяців тому
The PT2399 Echo/Delay chip is good for Lo-Fi echo effects, but the chip datasheet doesn't give many insights into how it works and how to use it. Datasheet electricdruid.net/datasheets/PT2399.pdf Circuit analysis from ElectroSmash www.electrosmash.com/pt2399-analysis If you'd like to support the channel, you can: Support me on Patreon: www.patreon.com/gadgetreboot Shop through my affiliate link...
Audio Loop Switcher Project Update
Переглядів 2758 місяців тому
New pcbs are being worked on to get a more permanent project in place for the guitar effects loop switcher project. This is a progress update. A foot switch panel will have 12 stomp switches to bring effects in and out of circuit easily. IWS-2820 crimp tool used for the JST pins IWS-2820 JST crimp tool s.click.aliexpress.com/e/_DEOAZ6H If you'd like to support the channel, you can: Support me o...
Dial Up Modems and Pulse Dialing Tested on Phone Line Sim
Переглядів 4399 місяців тому
Pulse dialing was implemented on the phone line simulator with the use of the pulseHandler library from: github.com/ktownsend-personal/RetroPhone And two 386 computers were used with external modems to test the phone line for a dial up connection capability. Check the main channel for more projects and updates: www.youtube.com/@gadgetreboot If you'd like to support the channel, you can: Support...
Phone Line Simulator Project Update: 2 Phones Working!
Переглядів 80810 місяців тому
Two prototype PCBs have been assembled, one to control each of two phones. The ESP32 code has been developed to a point where two phones can call each other and ring or generate busy signals, and if the call is answered, a connection is made between the phones through the subscriber line trunk. More videos in this series: ua-cam.com/play/PLjJ5BDlAoGarnVThQQigLQh1viLgSvlCM.html Schematic/Sketch ...
Phone Line Simulator ESP-32 Schematic Review
Переглядів 1,1 тис.Рік тому
Almost ready to order PCBs for the new ESP32 based version of the phone line simulator. Here's how the schematic looks. If you'd like to support the channel, you can: Support me on Patreon: www.patreon.com/gadgetreboot Shop through my affiliate links! Banggood www.banggood.com/custlink/3vKYLANH8N Aliexpress s.click.aliexpress.com/e/_AFeHwB Amazon.com www.amazon.com/?&_encoding=UTF8&tag=gadgetre...
SLIC Audio Filter and Mute Circuit
Переглядів 292Рік тому
The phone line SLIC module has an audio path that I want to filter with a pass band of 300 Hz - 3400 Hz, but there is also another unexpected disturbance signal imposed on the audio path while a phone is ringing, so that must be dealt with too. If you'd like to support the channel, you can: Support me on Patreon: www.patreon.com/gadgetreboot Shop through my affiliate links! Banggood www.banggoo...
Pulse Dial Detection and Mechanical Ringing
Переглядів 525Рік тому
With help from this similar SLIC phone line project: github.com/ktownsend-personal/RetroPhone/tree/main I have started re-integrating the SLIC functionality into the new ESP32 phone line architecture. Using an old mechanical rotary dial phone, I was able to verify that the SLIC had enough power to ring the mechanical bells, and now pulse dialed digits are also detected in the system. If you'd l...
Adding WiFi and Wav Recordings to Phone Line Sim
Переглядів 262Рік тому
The original ESP8266 based phone line simulator is now being adapted to ESP32 to allow more features, starting with using WiFi and ESP-NOW to communicate between nodes, and adding the ability to play back audio samples such as "please hang up and try your call again, this is a recording". This ESP32 version will be built back up from here and if the prototype works, a pcb will be made. New proj...
LTSpice Noise Voltage Source
Переглядів 8 тис.Рік тому
A behavioral voltage source can be used in LTSpice to create arbitrary voltage waveforms, including noise with the white(x) function. Here's how to implement that noise source and combine it with a sine wave signal. LTSpice files used: github.com/GadgetReboot/misc_file_bin/tree/master/2023-05/LTspice/WhiteNoise_Behavioral_Voltage_Source Behavioral Sources ltwiki.org/?title=B_sources_(complete_r...
AY-3-8910 Sound Generator with Arduino Nano - How it Works
Переглядів 1,5 тис.Рік тому
AY-3-8910 Sound Generator with Arduino Nano - How it Works
Interfacing with Arcade Trackballs and Rotary Joysticks
Переглядів 507Рік тому
Interfacing with Arcade Trackballs and Rotary Joysticks
Telephone Central Office Re-Design with ESP32 Begins
Переглядів 489Рік тому
Telephone Central Office Re-Design with ESP32 Begins
Phone Line Sim Schematic (and some issues)
Переглядів 1,1 тис.Рік тому
Phone Line Sim Schematic (and some issues)
Using a SLIC Module to Make a Land Line Phone Ring
Переглядів 1,6 тис.Рік тому
Using a SLIC Module to Make a Land Line Phone Ring
Call Progress Tone Library for Mozzi - Phone Line Central Office Project
Переглядів 603Рік тому
Call Progress Tone Library for Mozzi - Phone Line Central Office Project
Mozzi Synth: DTMF Call Progress Tone Generator
Переглядів 1,6 тис.Рік тому
Mozzi Synth: DTMF Call Progress Tone Generator
LTSpice for Beginners: Simulating Time and Frequency Domain of a Filter
Переглядів 7 тис.3 роки тому
LTSpice for Beginners: Simulating Time and Frequency Domain of a Filter
LFSR: Linear Feedback Shift Register Basics for Pseudo Noise Generation
Переглядів 8003 роки тому
LFSR: Linear Feedback Shift Register Basics for Pseudo Noise Generation
LTSpice - Importing a New Component Model for Simulation
Переглядів 73 тис.3 роки тому
LTSpice - Importing a New Component Model for Simulation
Op Amp Resistor Choices for Vin and Vout Specs
Переглядів 1,7 тис.3 роки тому
Op Amp Resistor Choices for Vin and Vout Specs
Direct Digital Synthesis - How it Works and a Demo on Arduino Due
Переглядів 6 тис.3 роки тому
Direct Digital Synthesis - How it Works and a Demo on Arduino Due
When I'm doing a repair like this and the conductive part of the rubber contact is worn out I place a thin self-stick conductive pad over it. I use the kind from ButtonWorx, which I got on Amazon. I keep a universal kit of these self-stick pads in stock in my lab (part number BW-70KIT). There may be other brands that do the same thing, but this is the only one that seems to be readily available in my area. This approach has saved many items from the landfill over the years. I have no affiliation with ButtonWorx, I'm just a satisfied customer. (edited to correct spelling).
I’m so glad you did this. I’m sure because of planned obsolescence we’re not going to see any 40 year old electronics being revived in the future.
I can't tell you how cool I find this. I can't work out how this hasn't got more exposure. I can't wait to build a couple!
Why are you following T568B ? I thought USA followed T568A mainly
So I just stuck some adhesive aluminum duct tape underneath the button and it reestablished the conduction, i dont know how long this will last but it works for now atleast thanks for educating me on how these buttons work.
Can someone help how this solder iron is working without 24V power Supply?
I'm confused about the power supply for this soldering iron, which requires 24V to function. The circuit doesn't appear to include a 24V transformer or any other obvious means of providing the necessary voltage. Can someone explain how the iron is being powered in this setup?
I am interested, how to decoding Call Progress using esp32 without extra ic tone decoder eg. cmx673, cmx683, and so on
Goertzel algorithm libraries might be able to decode the frequencies in the audio but I’ve never tried it and some people have found it to be inconsistent. Maybe if the chip is doing too many other things it could be even less reliable to the point where you need a separate chip anyway. www.hackster.io/MM_Shoaib/dtmf-decoder-using-only-arduino-872502
@@gadgetsideload I have successfully detected DTMF with Goertzel. However, for Call Progress, I still depend on CMX673, I would be very grateful if you could create a library to detect Call Progress Tone, especially to detect Bussy Tone, and Hello Voice :-)
@@gadgetsideload ua-cam.com/video/py6uTzZ07iA/v-deo.htmlsi=AyFb04gPjdhGzUfz
I followed the PTC schematic before I found your video and I immediately get a 2.5V drop on my 5V rail after you connect it to the chip. Any ideas on what I’m doing wrong? Is it worth troubleshooting or should I just look into a chip analysis like you described here. Much appreciated!
if the main voltage supply rail is being dragged down dramatically when something is connected it sounds like a short circuit or bad component drawing excessive current.
Try re capping the console that might take care of it.
Very thorough. That punchdown holder is pretty essential. It really sucks to have that punchdown slip and go into your palm.
So my RX is 5V as well, while the TX is 3.3v This is when powering from USB. Powering from 3V3, RX is 2.6V and TX is 3.3V.
If someone can tell if the RX dropping that low is to be expected while not transmitting, please let me know.
is that while applying 3.3 V to the Vin pin? and is that with a CH 340 chip? I think the module vin pin is intended to take higher than 3.3 V so the onboard regulator can bring it down to 3.3 but I’m not sure if the regulator on these modules just passes through 3.3 in to out without a drop out. having 2.6 on the Rx pin is definitely not normal and it’s around the bottom threshold for detecting logic high which I think is 2.65 V when running at 3.3 V so it definitely needs to be run differently to get that back to 3.3 V.
I usually buy the versions that use an external antenna so that I have some freedom to get better signal coverage.
Very good explanation. USB IC provides the level shifting when it is connected to a 5V USB port. Why CH340 is connected to 5V? Doesn't cost anything, in fact they could have saved those 2 resistors. About the RSSI, would like to see the difference between the original modules from ESSPRESSIF and the clones.
Nice find, clever fix, interesting mystery...
Long rows of pins with ABS plastic on top ... oh so hard to un-solder. Happy to find your 2nd channel!
I think I started this channel 3 years ago and originally it was just a parking spot for extra long schematic or software discussion that would not really fit in a regular video but now I’m not even sure if I should actually put proper content of certain project categories on here as well so I’m letting it evolve on its own.
Creative video, thank you :)
Thanks much. Very cool. I have an old crank style phone, a dial wall phone, some old modems, and some 8 bit computers. I'd like to set up my own phone system for testing and demonstration of this equipment. Calls, ringing phones, BBS on Apple ][ etc... Is your board available as a kit from JLPCB or PCBway?
The project is shared on PCBway www.pcbway.com/project/shareproject/Phone_Line_Simulator_POTS_Land_Line_1d34078f.html The one component they seem to have trouble sourcing is the 600 ohm transformer because I just buy them on eBay or AliExpress so when people buy the assembled project there, I think they have to just tell them don’t put the transformer and people solder one in themselves.
@@gadgetsideload Thanks I submitted an order for 5 units to your link. It is being reviewed for assembly now. I made note of omitting the 600 ohm transformer if it was not stocked. I will let you know how it goes.
I am also currently working on another accessory board where if it works, several of these can be plugged into it so that calls can be made between multiple boards at the same time or even party line multiple notes together. if that goes well I could be making a video within the next two months for it.
Thank you this was amazingly helpful and a good speed for me :) not too fast and very clear <3
I much prefer Visual Studio code with the PlatformIO plugin. Arduino code still works with minor changes. None of this digging through a 100 menus to find the correct CPU/programmer!
Are we talking WS2812B style LED's here? I do love using the little chips. I just write my own bit-bang drivers for these, unless the chip has some form of DMA output.
These were 2812 but I’m also hoping to get SK 6812 working
@@gadgetsideload The SK6812's should not be a problem as they are identical to the WS2812B's, the SK3612RGBW just need a 4 byte buffer instead of a 3 byte buffer per pixel. Not a problem if your bit banging.
I've had good luck with the ButtonWorx repair kits (on Amazon). They're self-adhesive and they stick to the PCB instead of the button. They have a thin spacer built in that keeps the conductive pad just above the surface of the PCB. Remotes I repaired around 2 years ago are still working fine under daily use.
Why sometimes LTSpice simulations very slow, maybe you know how to speed up the simulations?
Interesting take on a custom ATtiny breakout board. You exposed the three most common serial interfaces, added onboard TTL serial to USB, and broke out the remaining four I/O pins. I could see how that could be useful for generic experimentation using this ATtiny series. Cool!
it has turned out to be more useful than I originally anticipated, I think I made it close to two years ago and I’m always finding uses for it.
Can I buy this PCB somewhere? Is the source code and diagram for this PCB available somewhere?
PCBs are available here and there’s a link to code and project files on GitHub there. if a board is purchased as an assembled unit I think it just comes with header sockets and people provide their own processor to plug-in. www.pcbway.com/project/shareproject/USB_Adapter_for_Arcade_Trackball_Spinner_and_LS30_Rotary_Joysticks_ad53cf0e.html
I was not able to locate the I2S.h, thus had zero luck with the sketch. Still wish I could get your previous effort working on the mega, it really works nice on the uno. thanks for sharing!
Good job . I want to build a dtmf dialer by esp8266 and i use tone to build 2 frequencies on 2 pins but when i dial by it , wrong number message heared. Can you help me to solve this problem?
Best to check the battery and check your camera can film infra red leds first 😂
Just a thought, superglue might be a bit brittle for this kind of use. I might try some form of rubber contact glue it's a bit more flexible Superglue is no good in shear type force, so any flexing could lead to the joint parting ways.
I was considering contact cement but the small tube I had was all dried up, I probably bought it 15 years ago and used it once for whatever I bought it for at the time so I’ll consider this an ongoing experiment for type of glue. It will at least only get gentle use around here.
Great simple repair. I gotta get me a box of those replacement pads - there's a couple of remotes around here that haven't responded to just cleaning them.
Definitely start by looking at the IRLED in the camera to confirm the buttons are not responding because I still have one remote for a receiver from the 90s where the power button stopped responding in the past week, but the LED is actually transmitting. I tried gluing a new pad on just to see and it did not change anything so I’m not even sure what’s going on with that one, the power button on the receiver works but just not from the remote for some reason.
Where would I find the filter calculator??
Great product, I was looking for this . We should work together.
For MacBook how can I open top dictionary?
at 7:20 you ask what it means: "Any not specified set to 000". It simply means taht whatever register is not in the list, you set it to 000. So all unused registers to 0.
its not working. i used ay 3 8912 i only hear clicks and 1 one at the end
Helped with my simulation homework, thank you!
Funny I was thinking about doing this. It’s essentially a GigRig G2 perhaps?
similar concept but I believe they use completely passive relays to switch unless other buffers are activated for things like splitting the signal chain into multiple paths. So doing it with semiconductor analog switches like this matrix here can possibly affect the signal path. I didn’t notice anything detrimental at amateur home volumes.
i could only find transient.cir file and thats not working. I cant find model file for lm358. please sir share it please
Fascinating stuff. The only thing that I am struggling with is the multiple waves. In the case that both sine waves are at their peak and you add them together, you will be outside of the DACs range. In analog synthesis, if you pass an op amp's range the signal will clip. I didn't really get what the equivalent was of this in digital synthesis. You shift each data point by one bit, so essentially dividing by 2 before adding correct? This way it won't exceed the DACs range? And if you wanted to use 3 waves you would have to divide the values by 3? Doesn't this decrease the resolution of the wave because when you divide you may be rounding values off? Or does it not matter because once you add them back together you still use the full range of the DAC?
Also, in generating sawtooth waves below 500Hz, do you think a filter would be able to create a sharp enough wave but where you can't see the steps
In this little field of Poppies, Poppies, Poppies, Poppies, ..... Found several of these while attempting to inventory my junque (box?, room? area?) again. Or still for the last 20 years. it breeds.
I just started officially sorting out my junk box that has been going for decades maybe over 30 years that’s my cut off for choosing to remember how long I have been hoarding parts. I have so many weird chips that I don’t even know anymore what they do and I’ve been googling them. It might lead to some interesting breadboard projects.
Looking forward to the inevitable guitar pedal implementation.
The hardest part will be finding a way to tape down a guitar cable to the workbench without dragging a breadboard and everything else on the floor
@@gadgetsideload Drywall screws.
Following this series avidly as it evolves - thanks.
I've watched all of your "episodes" in making this and I love it! I originally came to see how I could make an "old" phone tester, testing pulse dial or DTMF to BCD so to display the dialed number on a 7 segment display; .also using the SLIC just to provide ringing current. Now I may make a phone to phone demo board of my own! You sir, have expanded my horizon; thank you so much. Incidently in the UK we call the Central Office the Exchange. Also watching earlier " episodes" it struck me that perhaps you could hive off the service signal generation to another processor and just call the tones as required...
I’m currently ordering more parts to try some more things out including making a sort of expansion switching matrix where a bunch of exchanges can all plug-in and it will have its own way of routing calls between several different nodes, so there could be multiple separate calls in place or even party lines with more than two on the same circuit. I’ve been working on it more than five years at this point so the ideas keep coming.
The stand works if you place the groove on the iron just above the nut onto the notch in the stand plate.
Thanks for this video, it was helpful and cleared up some confusion about how to import symbol parameters into a file!
Awesome information and video.
Isn't the second circuit, the band amplifying filter, just an oscillator? How do you stop it from doing that? The Twin T has a 180 deg phase shift, the op-amp inverts the signal, another 180 deg and it has plenty of gain. 2 pi around the loop and gain >1.
In a more complete implementation of that circuit as a filter there's another feedback path added. In this video I used it as a Wah filter effect and then modified it to force oscillations (first step toward drum synth) ua-cam.com/video/s6U4tN_ZrB0/v-deo.html
hello friend , thanks for the quality video . I'm trying to simulate an electret mic + its noise and i wanna add this noise to the simulation by injecting the noise spectral density into a noise generator ! is there a way to do that ?
Hello. My soldering station 8898 no longer displays the soldering iron temperature display correctly. The lower limit is 356. The upper limit is 932. Although it should be from 180 to 500. When turned on, it shows not 352 degrees, but 662. The soldering iron itself works. The hair dryer display shows the temperature correctly. Can you tell me what elements might have broken? What should I check?
Your screen is setted in Fahrenheit
These SLICS would have depended on a codec's bandpass filter to filter out things outside of the voice band, as SLICS would have typically been connected to to a codec/filter and then to a TDM PCM highway for digital switching. If you are going to directly connect one of these to another SLIC, then external filtering would be required. As far muting the output during ringing, couldn't that be done by using a crosspoint switch matrix (e.g. MT8816) to connect the audio path to other SLICS and to the ESP32? The only thing which could be an issue is the spikes coupling through the crosspoint switch during ringing due to their fast rise times, but might be able to be solved with an RC snubber at the output of the bandpass filter.