Back in 1985 I built a robot with a rotating sonar system, using ultrasonic transducers very similar to those used today. While rotating, the sonar was pulsed once every degree. Over one weekend I spent a lot of time testing my sonar with my head a few feet from the sonar system. I had no idea that a 40KHz pulse, which you cannot hear, could damage my hearing, but that is what happened. In one weekend, I permanently damaged my hearing and it has only gotten worse over the last 35 years. Later I calculated the SPL (sound pressure level) of that sonar’s output pulse from the amplitude of the signal and its data sheet. I found the sound output of that transmitter was about 125 db. On my current robot I have three HD-SR04 boards which I use for collision avoidance. I measured the amplitude of the transmitter signal and from the 40T/R transducer data sheet I calculated the SPL of the 40KHz output sound of the HD-SR04 to be about 115db, which is still loud enough to damage your hearing. So please keep your head far away from the front of the sonar board.
Hello, Ive been watching your videos and feel like I could really use your help on a project. I am a very beginner. Id like to use the motor cards you mention or something similar to control some small 12vdc motors. But I need it integrated into an hmi screen instead of the arduino. @RachelDeBarrosLive
Much better video than the last one I saw. Easy to follow, good continuity. Good reading rhythm😀👍👍. You could tell you put a lot of time in the prep work, to help us follow along. Mike
Rachel: This was the best tutorial I've had thus far. It was useful, well explained, and you shared the code while I was following. I'm a retired teacher, and this is my style of learning. Please slow down your dictation by a few microseconds (see, I learned). I am very anxious to learn more using the UltraSonic sensor.
I love watching your videos, they are easy to understand, even though english is not my mother tongue. About the last question, I have a bit of a fun example, it's from "My little pony", in the episode "It's about time". Loved watching MLP with my daughter, now she is more into games, which is equally good. 😊
Rachel I just found your channel and love it! Someone told me I need to use an Arduino board for a project I'm trying to build but I don't know how to program one to do what I need it to do. I have a 12 volt DC motor I need to make turn on for three seconds and stop for five seconds then turn on in the opposite direction for three seconds and stop. This is for a slingshot auto resetting target I want to build. I would like to know what Arduino board to buy.
Check out this nerdy information from this gorgeous lady. Rachel , you're doing some nice work, as always. Proclaims aside, notwithstanding one way or the other, I've enjoyed your work over time. Years later, I realize I may have missed something, but I'd like to see you vroom vroom again. AirHammer out!!
Rachel, I am slowly dying while I await the next UA-cam tutorial on pairing the ultrasonic sensor/Arduino with other functions. I have a project in which I wish to use the Ultrasonic to start Arduino to run a series of 12 volt LED signal sets (i.e. green, yellow, red). I need you next tutorial . I'd hate to break up our engagement over such a small thing.
To answer the question @15:04 about Future self going Back to past self with good news.. "Back to the Future Part II" when Biff goes back to take his younger self the "Grays Sports Almanac"...
There are a few drawbacks to the ultrasonic sensor that I didn't go into in this video. I'm doing a another video on PIR vs ultrasonic sensor vs IR sensor to cover their pros and cons. Sometimes the ultrasonic sensor has trouble with curved or irregular surfaces. For a motorized gate, many people use an IR sensor instead. It goes LOW when an obstruction (like a person) is detected. You can use that to either pause the gate or make it open if it detects something in front of it. What are you trying to do with your gate?
@@RachelDeBarrosLive Colin Furze has a Delorean ask him, he's digging an underground carpark for it with a raising turntable! Colin is crazier than you in a wonderful way😊 GB :)
A millisecond is 1/1,000th of a second. A microsecond is 1/1,000,000th of a second. The ratio is 1,000 to 1. Therefore a millisecond is 1,000 times longer than a microsecond.
I think of lie detector whenever I see Lidar. Like when we were teenagers my mom’s uncanny ability to tell that yes we had been doing things that we were not supposed to do last night.
Rachel...I subscribed for the content, but I stay to soak up your boundless enthusiasm!
this is the best arduino video ever!
Back in 1985 I built a robot with a rotating sonar system, using ultrasonic transducers very similar to those used today. While rotating, the sonar was pulsed once every degree. Over one weekend I spent a lot of time testing my sonar with my head a few feet from the sonar system. I had no idea that a 40KHz pulse, which you cannot hear, could damage my hearing, but that is what happened. In one weekend, I permanently damaged my hearing and it has only gotten worse over the last 35 years. Later I calculated the SPL (sound pressure level) of that sonar’s output pulse from the amplitude of the signal and its data sheet. I found the sound output of that transmitter was about 125 db. On my current robot I have three HD-SR04 boards which I use for collision avoidance. I measured the amplitude of the transmitter signal and from the 40T/R transducer data sheet I calculated the SPL of the 40KHz output sound of the HD-SR04 to be about 115db, which is still loud enough to damage your hearing. So please keep your head far away from the front of the sonar board.
Great tip! Some people have said that their pets don't seem to like them either. Luckily all my projects are in the garage!
sure it wasn't the rock concerts?
Wow I never imagined it would be so loud, that would be nearly as loud as a jet fighter taking off of the runway.
Hello, Ive been watching your videos and feel like I could really use your help on a project. I am a very beginner. Id like to use the motor cards you mention or something similar to control some small 12vdc motors. But I need it integrated into an hmi screen instead of the arduino.
@RachelDeBarrosLive
another brilliant video, cheers mate!
Was literally hoping you'd do do a project with this because I want to use it. Thank you, love your channel!
What's up Rachel ! Loved watching you fixing cars on tv, so glad you have this channel!
Thanks!
Thank you so much! So kind!
Much better video than the last one I saw. Easy to follow, good continuity. Good reading rhythm😀👍👍.
You could tell you put a lot of time in the prep work, to help us follow along. Mike
I don't know why you have low views your video's are so helpful I'm beginner but understood it easily. I hope i could access your live workshop.
Rachel: This was the best tutorial I've had thus far. It was useful, well explained, and you shared the code while I was following. I'm a retired teacher, and this is my style of learning. Please slow down your dictation by a few microseconds (see, I learned). I am very anxious to learn more using the UltraSonic sensor.
Your videos are so easy to follow and you make things so easy to understand. Could you do a video on relays?
Your such a great teacher❤
I love watching your videos, they are easy to understand, even though english is not my mother tongue. About the last question, I have a bit of a fun example, it's from "My little pony", in the episode "It's about time". Loved watching MLP with my daughter, now she is more into games, which is equally good. 😊
Rachel I just found your channel and love it!
Someone told me I need to use an Arduino board for a project I'm trying to build but I don't know how to program one to do what I need it to do.
I have a 12 volt DC motor I need to make turn on for three seconds and stop for five seconds then turn on in the opposite direction for three seconds and stop.
This is for a slingshot auto resetting target I want to build. I would like to know what Arduino board to buy.
Awesome as usual , thank you for the effort😍
Glad you enjoyed it!
Thank you very much, always wondered how it worked
which library do you use ?
always love your videos - thank you
Glad you like them!
The very first setting of trigPin to low should only needed to be done once, so could by just in fron of the loop. This saves some processing time.
Ok I subscribed for your positive energy and apparent skills.
Thanks for subscribing, I'm happy to help!
Fantastic video!
Love watching your videos well presented
I appreciate that! 👍
Check out this nerdy information from this gorgeous lady. Rachel , you're doing some nice work, as always. Proclaims aside, notwithstanding one way or the other, I've enjoyed your work over time. Years later, I realize I may have missed something, but I'd like to see you vroom vroom again.
AirHammer out!!
Thank you Rachel 🙏🏻❤️❤️❤️❤️
Rachel, I am slowly dying while I await the next UA-cam tutorial on pairing the ultrasonic sensor/Arduino with other functions. I have a project in which I wish to use the Ultrasonic to start Arduino to run a series of 12 volt LED signal sets (i.e. green, yellow, red). I need you next tutorial . I'd hate to break up our engagement over such a small thing.
ey buddyboy, im the number 1 rachel glazer... iv'e been a fan since 2015 so you cant match me!! just hang up your boots punk!!
To answer the question @15:04 about Future self going Back to past self with good news.. "Back to the Future Part II" when Biff goes back to take his younger self the "Grays Sports Almanac"...
Keep it up ❤
Glad you enjoyed it!
who wouldn't go back to HS if she was the teacher! great job. I tried this on my entry gate but doesn't work on detecting people.
There are a few drawbacks to the ultrasonic sensor that I didn't go into in this video. I'm doing a another video on PIR vs ultrasonic sensor vs IR sensor to cover their pros and cons.
Sometimes the ultrasonic sensor has trouble with curved or irregular surfaces. For a motorized gate, many people use an IR sensor instead. It goes LOW when an obstruction (like a person) is detected. You can use that to either pause the gate or make it open if it detects something in front of it.
What are you trying to do with your gate?
great video.
Which Arduino use esfasific no. Of
Arduino
Instead of using a breadboard, can I just solder the wires and parts?
you are so much fun! Even when you send me back to High School.🌹🌹🌹🌼
Thanks for watching - now to find a new flux capacitor for my Delorean 🤣
@@RachelDeBarrosLive Colin Furze has a Delorean ask him, he's digging an underground carpark for it with a raising turntable! Colin is crazier than you in a wonderful way😊 GB :)
Great!
Glad you liked it!
Can you make a transmitter and receiver with 0.96 inch oled display
Rite Rachel Dudess, Always knew this could be done just to thick to figure it out! 🤔 TFS, GB :)
Happy to help!
Nice video as always. Do you make video if I give you my content?
Math class 1.5 x1.5 = one times one and a half times one one and a half lol love you
Thanks for your videos and they are really amazing anyway you must know your great with electronics.😇😍🥰👍
Rock on 🤘🏽😎🤘🏽!!!!
Finally google Rachel because she looked so familiar. She was one of the ladies on three girls garage!
A millisecond is 1/1,000th of a second. A microsecond is 1/1,000,000th of a second. The ratio is 1,000 to 1. Therefore a millisecond is 1,000 times longer than a microsecond.
The downside to this sensor is the resolution! Lidar is much better for resolution, but the code is a lot tougher!! 😊😊😊
I have to try that next!
I think of lie detector whenever I see Lidar. Like when we were teenagers my mom’s uncanny ability to tell that yes we had been doing things that we were not supposed to do last night.
@@mikebond6328 🤣😂
Haz otro canal en español. usa IA para traducir tus videos y así de fácil duplica tus vistas.
🤔
Please ,play the violin again
So sorry I was listing to CAT STEVENS Angelsea Don't worry Halloween is my Bag I still stay silent your phone booth said it al total class !