Diy touch sensors

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Esperienze elettroniche

Esperienze elettroniche

День тому

In this video we will see how to make touch sensors using common materials.
Arduino firmware:
esperienzeelettroniche.blogsp...
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#arduino #projects #sensors #touch #touchsensors #capacitive

КОМЕНТАРІ: 67
@ajpranata4053
@ajpranata4053 Рік тому
awesome video, thanks !
@abelmasresha1005
@abelmasresha1005 2 роки тому
Great work. It works for me. But how can i use for fade or dimmer light this sensor? Thank you
@ahmedmedhat4428
@ahmedmedhat4428 Рік тому
Thanks for the great tutorial, but I have a question: How can I read the raising edge
@cigga_b4170
@cigga_b4170 8 місяців тому
If I want to find some other material to stick on the touch, is it still working other than tape? can you advise me
@YFTOUCH
@YFTOUCH 11 місяців тому
You are really wonderful!
@allantamm2185
@allantamm2185 Рік тому
Now it would be interesting to see another arduino that is able to contactlessly switch the first one..
@giovannifarese6801
@giovannifarese6801 2 роки тому
Bellissimo!!! Augurissimi Prof
@espelett
@espelett 2 роки тому
Ah ah, grazie per il prof. Comunque tanti auguri anche a te.
@yousefelgredly241
@yousefelgredly241 9 місяців тому
Thank you for this tutorial 🥰🥰 but i have a question , is that sensor work with other objects like ball ?
@MaxParadiz
@MaxParadiz Рік тому
Very cool! I wonder if it would be possible to use a single asymmetric object with a capacitance change that depends on whether you slide a finger in one direction or another. So, sliding the finger up might increase the capacitance by a bit, and sliding down will decrease it. By measuring over the timeframe that the object is within the "being touched" capacitance range, you can use a single object with a single pin connection to scroll up or down.
@espelett
@espelett Рік тому
I don't think it's a simple task. Sliders can be implemented by using several sensors. Here you can find some useful information ww1.microchip.com/downloads/en/Appnotes/Capacitive-Touch-Sensor-Design-Guide-DS00002934-B.pdf
@jojo-wc6ni
@jojo-wc6ni 8 місяців тому
Hello I have the problem that when I leave the Arduino on after a few minutes the L LED flashes and the button no longer works properly. Any idea how I could fix this?
@ryanschmitt5053
@ryanschmitt5053 8 місяців тому
I love this tutorial. My main question would be is it possible to define a different sensitivity threshold for each sensor? I want to make one that could work my just getting close to it.
@qwertyboguss
@qwertyboguss 3 місяці тому
It's possible if you edit the code. You could put it as a value of the structure (called touchPad) that's defined and set the value upon initialization. However setting the threshold too low will get you false positives. See the example in the graph when debug is enabled, there one of the pins is at a value of 40 already. And that value depends on atmosphere and the object it's connected to. The closer your value is to the non-touched state, the higher the chance of false positives.
@elenaherrmann8122
@elenaherrmann8122 Рік тому
Hello, thank you for this great tutorial! Do you think it is possible to include a MUX (e.g. CD4067B, 16 channels) to increase the number of touch sensors? Would I then connect the SIG of the MUX with one of the ANALOG pins on the Arduino? Or do you have a better idea for a setup? Thanks again! 🙂
@christobacon1
@christobacon1 4 місяці тому
I bet this could be done on a mega which has 16 analog pins ¯\_(ツ)_/¯
@bahaajobs
@bahaajobs 5 місяців тому
Thank you, this is very nice project, but have you noticed this touchpad will not work if your body touching the ground? is there a solution for this?
@JB-zv4sv
@JB-zv4sv 9 місяців тому
does it work under glass?
@KSAC2716
@KSAC2716 Рік тому
Fantastic! Does this also work on esp32? And can we touch it through a lcd screen? Thank you! KSAC
@espelett
@espelett Рік тому
I didn't try on esp32. I think that an LCD screen is too thick ti male it work.
@KSAC2716
@KSAC2716 Рік тому
@@espelett Thank you! What method do you think is the best way to make a touch lcd screen?
@arisoda
@arisoda Рік тому
Any idea how much power this draws when NOT touching the sensor? I'm curious whether I can make a really small device like this that only runs on a 3V button battery...
@espelett
@espelett Рік тому
I don't know the exact current consumption, but I think it is not reccomended for battery operation because the mcu should be running continuosly (no sleep mode).
@arisoda
@arisoda Рік тому
@@espelett That's a fair point! Although what if I used a simple push button? Does that also require the mcu to run continuously?
@JoinToHell1
@JoinToHell1 11 місяців тому
Will this work okay with 60 sensors?
@melvinfisch3268
@melvinfisch3268 7 місяців тому
Hey Nice Video thanks, Im wonderin if i can programm it with 2 Led strips like this.. 1 touch= LED bottom On, 2 touches in a row = LED Top On, 3 touches in a row= LED Bottom and Top On? Thanks for the Respons :)
@qwertyboguss
@qwertyboguss 3 місяці тому
Yes it's possible you need to add that to your arduino code. Keep track of time/ticks or implement a counter that checks on/off/on withing a given time period.
@jeremielegroux4487
@jeremielegroux4487 Рік тому
nice job!.I 'm using the "capacitvesensor" library but unfortunately, it needs to be plugged to the earth.. does this circuit requires to be grounded?
@espelett
@espelett Рік тому
No, it doesn't. Try it.
@cigga_b4170
@cigga_b4170 8 місяців тому
How we choose matterial for touch if i want to install touch to project such as i want to install to my lamp , pls advice
@qwertyboguss
@qwertyboguss 3 місяці тому
Needs to be conductive, but preferably with a somewhat thin non-conductive layer in between so that you're not shorting poor body to the pin.
@silasgeerts1736
@silasgeerts1736 2 місяці тому
If i use a multiplexer to add more analog pins can i get 12 sensors to work?
@espelett
@espelett 2 місяці тому
You can try, but I don't think it will work.
@silasgeerts1736
@silasgeerts1736 2 місяці тому
Thank you, I tried and I did indeed not work but I think I found an other way to do what I want.
@sijojohnson
@sijojohnson Рік тому
does this single wire sensing is available for STM 32 chip? i need to detect 10 channels.
@espelett
@espelett Рік тому
Sorry, I don't know if It works on stm32.
@techs5564
@techs5564 Рік тому
can these touch pads used to play specific tracks of mp3 in df player mini?
@espelett
@espelett Рік тому
Yes.
@techs5564
@techs5564 Рік тому
@@espelett thanks, i tried and it worked flawlessly. Now my issue is when the touch pad size increases i have to set threshold and samples again. Any way to do it auto?
@rodrigocirilo7343
@rodrigocirilo7343 3 місяці тому
Do you have pic version?
@bimokayoba
@bimokayoba 5 місяців тому
i am getting electrical shocks when touching the sensor, please help
@techs5564
@techs5564 Рік тому
is it possible to set threshold and samples automatically?
@qwertyboguss
@qwertyboguss 3 місяці тому
Yes, implement a startup sequence that reads the current values and add a safe percentage to it as threshold. You can add a threshold property to the structure to keep these values per sensor
@MohitSharma-lm2sb
@MohitSharma-lm2sb Рік тому
What do I need to change if I want touch means 1 and not touching to mean 0?? I tried reading the code, but some parts were too advanced
@qwertyboguss
@qwertyboguss 3 місяці тому
Yes, read the touchPad structure. E.g. (touchPad1.state == 1) means on
@jackisgoofingoff5510
@jackisgoofingoff5510 6 місяців тому
My eye: Watch til the end My brain: ??
@binal5542
@binal5542 Рік тому
Music is nice and far in the back
@bigmac9712
@bigmac9712 6 місяців тому
Why the A0 pin has to be disconnected?
@qwertyboguss
@qwertyboguss 3 місяці тому
Probably used as reference for the other pins. So basically to compare the state of an unconnected pin to one being touched (or not touched). This is a guess though.
@binal5542
@binal5542 Рік тому
I tried with uno but nothing happening . Changed the sensitivity but still no response . Please help . When upload it’s successful but with warning about “typedef struct “.
@espelett
@espelett Рік тому
Hello. The sketch should work without any modifications, I've tested it on different models of Arduino. The typedef warning is not critical. Have you checked all the connections and led polarity? Keep in mind, don't touch sensors during Arduino startup (while applying power).
@fasti8993
@fasti8993 2 роки тому
Could this be done on the Pi pico using Python?
@espelett
@espelett 2 роки тому
No, the Raspberry doesn't have any ADC.
@fasti8993
@fasti8993 2 роки тому
@@espelett I'm not talking about the Raspberry Pi, I'm talking about the Pi Pico, the new microcontroler from the released by the Pi foundation. It does have ADCs
@espelett
@espelett 2 роки тому
Oh, I don't know this model, and this technique require a very good knowing of the ADC and its multiplexer. Anyway, I wouldn't use Phyton (even the Arduino language is quite inadequate, this is just an experiment).
@naols5577
@naols5577 Рік тому
Hey 👋, I love your circuit but I'd like to replicate it with more than 5 inputs. I saw on UKposts that a lot of people do the same diagram but with digital pins instead of analog. (But you can't press all of them at the same time...) I know you may use float values with your code so you want analog inputs, but it would be amazing to use the digital ones (because with an Arduino mega I could connect up to 50 sensors). Do you think it's possible ? And if so can you use the same code with small modifications or do I have to change the diagram circuit ?
@espelett
@espelett Рік тому
Hi. This method works only with analog pins. There is a library (called CapacitiveSensor) that allow you to use digital pins, but it needs 2 pins for every sensor. Another method for using a digital pin is to connect it to VCC via a very large resistor (in the order of Mega Ohms), but for this to work your body has to be connected to ground (not very practical).
@naols5577
@naols5577 Рік тому
@@espelett I will continue to search. Thank you.
@JarppaGuru
@JarppaGuru 2 місяці тому
8:12 those you need if make pcb ncoz it wont work same as breadboard
@JarppaGuru
@JarppaGuru 2 місяці тому
7:09 then disconnected it. it connected breadboard now. it has capasitance LOL
@zerinoggonzalez9726
@zerinoggonzalez9726 Рік тому
Se puede utilizar Arduino uno?
@espelett
@espelett Рік тому
Si.
@nielsgrote
@nielsgrote 2 роки тому
great but music terrible ;-)
@espelett
@espelett 2 роки тому
You're absolutely right, but it's necessary to mask the artificial voice.
@yoashuain1
@yoashuain1 Рік тому
The outcome is hidden. Who knows if this would work?
@espelett
@espelett Рік тому
The video starts and ends with the circuit working. Which part are you missing?
@JarppaGuru
@JarppaGuru 2 місяці тому
5:20 why? is not measure what touchplate ghive normal then know if it touched. why need A0 LOL
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