TTP223 Capacitive Touch Switches

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TTP223 Capacitive Touch Switches

Рет қаралды 83,114

Күн бұрын

Taking a look at some TTP223 capacitive touch switches available for dirt cheap from eBay.com: (affiliate link)
rover.ebay.com/...
or from eBay.ca (affiliate link)
rover.ebay.com/...
These premade modules have some great advantages over diy solutions and even physical switches, such as pre-debouncing, mode switching and logic low and high toggling. Right off the bat they even have roughly 0.1 inches of range as well....great stuff!
Thanks for watching!
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Пікірлер: 147

@rramasamy 2 жыл бұрын

Sir, you explain very well. The way you speak makes the subject easy and interesting. All the best!

@pileofstuff 4 жыл бұрын

These things are super handy for making nice clean looking control panels. And they're ridiculously cheap as well.

@andrewkieran8942 4 жыл бұрын

Looking at the datasheet for the TTP223 IC, the capacitor that adjusts sensitivity may range from zero to 50pf, with higher values causing it to be less sensitive.

@SimpleElectronics 4 жыл бұрын

Thanks for looking that up! I really wanted to stick to a "practice only" approach to mimic the information available from an ebay seller and this was the smallest value practical capacitor I had so I decided just to go for it anyway.

@cbaxter6527 3 жыл бұрын

@PERIZ99 3V - low power mode typical 1.5uA, maximum 3.0uA low power mode is controlled by touch activity - touch, goes into fast mode and, touch released after 12 sec goes back into low power mode.

@kpcheck1 9 ай бұрын

thanks for sharing

@TrentSterling 4 жыл бұрын

Excellent first 30 seconds. Stuck around for more. Did not disappoint.

@manukalias 2 жыл бұрын

Nice Video. After killing a few of these modules while soldering pad A & B I cut a small piece from resistor and place it on those stupid pads then soldering becomes easier.

@chimpofm 3 жыл бұрын

a very helpful video. you just saved me a day of reading techsheets and trial and error , thankyou very much.

@chimpofm 3 жыл бұрын

if ur bored come see my talking rfid motorcycle that starts off the rfid chip i have grafted into my hand.

@chimpofm 3 жыл бұрын

Hey dude. Just thought id give you an update. The touch reader is all working great as per you instructions. I have combined the ttp223 with a rc522 mini. (Rfid reader) now i have a touch sensitive rfid reader that can wake up my arduino from sleep. Alowing me to create a low powered version for my car door. Thankyou again! Ill be back when its in the car. And ill have a nice video for you. Heres the nice video showcasing the bike i realy shud upload this on youtube. vm.tiktok.com/ZMJmDCj3P/

@andrewbeasley 4 жыл бұрын

Thanks for the video. I have two of these in the bits box with no instructions. Now I know what to do with them 👍

@SimpleElectronics 4 жыл бұрын

Glad I could help! let me know how it goes!

@cbaxter6527 3 жыл бұрын

Reading Chinglish on the TTP223B datasheet states "Cs value is 0~50pF" not nano Farad. 0pF equals maximum sensitivity and/or capacitor not grounded - default. There is no Cs capacitor on board. You can try a 22pf for Cs to make less sensitive. I believe the capacitor on board is a 104 - 100nF decoupling capacitor. Pin 4: AHLB - Vcc=>Active low; Default=>Active high Pin 6: TOG - Vcc=>Toggle mode; Default=>Direct mode Waiting for my order of ten to arrive from Jhina. Hope CanPost delivers before Xmas.

@BayouBradley 2 жыл бұрын

Is there a way to increase sensitivity, or is default the max?

@cbaxter6527 2 жыл бұрын

I have seen other videos attach a wire and plate to external contact causing a deeper field of non-contact area from 1/4 inch to inches. I assume larger area equals more electro-static charging potential.

@Fine_i_set_the_handle Жыл бұрын

i've seen alot of peoplle soldering circles made from copper wires to the side labeled touch and significantly extending the range you should make a video about that

@ronalddhs3726 4 жыл бұрын

Those switches are super cool! Thanks for the clear video :)

@s.h7124 2 жыл бұрын

Me to go out of my way to post a comment very hard but I want to say I like this guy

@stevesfascinations1516 4 жыл бұрын

New camera? Nice filming, soldering while filming - difficult to say the least and you pulled it off wonderfully! Nice topic as well. For a change, I have one of these....now I have an urge to go get it and experiment!

@SimpleElectronics 4 жыл бұрын

Not a new camera (I wish - I've been overdue for an upgrade but it isn't feasible for another little while at least) but I used the macro lens that I use for thumbnails for filming. It presents new challenges however - like shaky video that I had to stabilize in post (you may have noticed artifacts in the video!)

@puma1644 3 жыл бұрын

Put a 105 resister on 3th connection and test it. I try and it works by highest sensitivity, near to half inch

@drg9522 3 жыл бұрын

Tell me more pls

@ElectricPoliville Жыл бұрын

Video

@changjunzhang Жыл бұрын

Very helpful! For my particular use, I hope the switch to turn on/off only if the finger actually touches it or a surface connect to it. Is this achievable by fine tuning it? or it requires some other type of hardware?

@gibo588 3 жыл бұрын

I like the way you show the blades, like you wanna slice something. Anyways. I will buy those sensor for my project. Thanks!

@amservbiz 5 ай бұрын

Thank you for explaining so well, got everything I needed to know for my project.

@E4E 4 ай бұрын

Goodness knows how you soldered the B Pad, I can hardly see the feckers 😂😂 👏

@albanprada7183 4 жыл бұрын

Hi... good video. Does the capacitive switch work under 2mm acrilic layer? - inside a plastic case

@SimpleElectronics 4 жыл бұрын

Yup! Should work just fine!

@kpcheck1 9 ай бұрын

Thank you for sharing, very clear and precise explanation. Nice video too.

@Desert-edDave 2 жыл бұрын

The ESP-32 has pins which can be used for this purpose as well.

@oleksandrkosarevskyy882 9 ай бұрын

But TTP223 can be triggered from distance 0,5 meter, but the ESP-32 touch pin must be touched. This is the main and significant advantage No?

@sutats 2 жыл бұрын

Fun with capacitive touch switches

@notdonaldst 3 жыл бұрын

Thank you SO MUCH for posting this video. Can this switch be used in place of a mosfet to switch on and off a simple circuit, with the only other components being an led and a power source (and possibly a resister)? I hope to make a tiny light source to place inside a matchbox/hot wheels car that I can activate/deactivate by just touching the surface of the car.

@SimpleElectronics 3 жыл бұрын

if it is super low current, then yes :)

@notdonaldst 3 жыл бұрын

@@SimpleElectronics Thank you!

@quackerjax 2 ай бұрын

Did you ever get a video that shows the proper capacitor and it's range after that?

@riyad4547 2 жыл бұрын

i liked , subscribed immediately for the first 30 seconds .

@SimpleElectronics 2 жыл бұрын

Thank you!

@ItsIntelligentDesign 4 ай бұрын

Is there any way to make the touch area larger? For example, if I wanted to be able to touch anywhere within a 2x2" square

@ronedogg69 4 ай бұрын

Do you know if there is a way to make the output signal ground. I'm trying to integrate this into my car audio build. And all of my relays are for 12 volt. So I was thinking if possible to do a ground signal being sent

@AnotherMaker 4 жыл бұрын

Woo hoo. I learned something and got a shout out. I never noticed that those things work from a distance. Sorry the USPS broke the case.

@AnotherMaker 4 жыл бұрын

I actually learned more than one thing. Thank you!

@SimpleElectronics 4 жыл бұрын

haha I feel terrible that I haven't made a video out of your items yet lol

@AnotherMaker 4 жыл бұрын

@@SimpleElectronics when the inspiration hits, you'll be ready

@The-wq9lt 9 ай бұрын

can you please help me? my ttp223 touch sensor light is always on when i connect the vvc to 3v on nodemcu and it gets so hot also the touch wont work when i touch it and the led is always on too. whats the problem?

@mustafahajhamoud2077 7 ай бұрын

Thank you for the video, it was very helpful. Do you know how I can increase the detection range of the touch pad?

@boredfive3001 16 күн бұрын

How can I create a custom circuit board for these so I don't have to use an Arduino?

@peddersoldchap 8 ай бұрын

Hi. First, thank you for the video. Second, how can I use this device to reset a ZX Spectrum or a Commodore 64, using the reset pin of the CPU? That pin is active low, btw. Ta.

@jf455 2 жыл бұрын

Great Video, Hey in my Lighting project which has a 5W LED light, can i use it as a on/off switch between a 1.7cm thick wooden board?

@SimpleElectronics 2 жыл бұрын

I think that's too thick, but you can use a router to carve out a pocket

@MrKYT-gb8gs 4 ай бұрын

Does this still work if I have a thin veneer of wood or paper over it?

@billglass5160 Жыл бұрын

Works great on the inside of my plastic case containing some electronic components including an Arduino Nano. I am presently fixing the TTP223 to the inside top of the case with electrcian's tape stuck to the component side of the switch. Do you think I could glue the touch side of the switch to the case instead?

@SuperManyl Жыл бұрын

Thanks

@mr.selfdestruct2917 8 ай бұрын

Hi,with the sensor, I'm trying to power a mini bluetooth/amp module with a 3.7 lithium with charge chip. The sensor shows the 3.7 on my meter, but when I Solder to amp board, it cuts on and off. I'm thinking it's a ground issue? The sensor gets the vdc and ground from the charge board, the amp gets the vdc from the i/o on the sensor and I've tried different amp ground locations. The amp cycles on and off. I have B jumped on sensor.

@magdinabi7942 11 ай бұрын

can you please confirm this, The TTP223 capacitive touch sensor does it have built-in timeout mechanism? the reason i am asking is i am trying to use the TTP223 in a way when i touched and keep touching it i want the LED stay ON while my hand touching it and when i release i want the LED to be OFF. i have tried it but after like 7 seconds the LED goes OFF even i am still touching the sensor. Can you help with that?

@andymouse 4 жыл бұрын

I love these chips, and I have made my own shaped pads (My logo) and I found a 47pf cap perfect if you wanna actually touch the pad.

@SimpleElectronics 4 жыл бұрын

Very nice, have to test that - you just bought the bare TTP223 smd chip?

@andymouse 4 жыл бұрын

@@SimpleElectronics Actually no,I bought a strip of them like you have, but I used my homemade hotplate to remove some of the chips which was cheaper than buying them as I needed two for a project !

@MrBie 3 жыл бұрын

@@SimpleElectronics @andymouse123 do you know if is it possible to connect an external touchpad instead? That would be cool

@diegosanz6959 3 жыл бұрын

Great video! I am trying to power a DC: 3,5-9V mini water pump with a 18650 3,6V Battery. What MOSFET do I need to use to make the TTP223 work? Thanks!

@SimpleElectronics 3 жыл бұрын

One with a VGS lower than 5v and with a low enough RDS ON not to burn up for your current!

@celmarboga3029 2 жыл бұрын

Also Have a function if I put a 🍷 glass to this sensor?

@SimpleElectronics 2 жыл бұрын

No sir, only capacitively coupled things!

@celmarboga3029 2 жыл бұрын

@@SimpleElectronics okay thank you

@kittyr791 6 ай бұрын

The data sheet says to use between 0-50 pF on the sensitivity controller, so you actually used around 1000 times too much!

@crimsonred9207 2 жыл бұрын

This video is super helpful I’m new to this type of world and I don’t know much but I have two questions if you guys wouldn’t mind me asking. 1: I notice the pcb has three connections and I was wondering if it would still work if I spliced it to a custom built pc power on button cable which only has two wires and I believe run at 5v (correct me if I’m wrong) 2: I’m assuming since you put it through a case and it still toggled would putting a sticker over this still trigger the switch ?

@ionutvil1 2 жыл бұрын

Hi, I’m just curious, will this switch support a higher load as a CREE LEDs flashing??…noticed you used a regular led which has a lower load…thank you.

@SimpleElectronics 2 жыл бұрын

No it won't - but you can use it to activate a power transistor which will power a cree LED

@Satoshisg Жыл бұрын

hello!, Is there any way to bypass the auto calibration function? after 8 secs aprox the snesor re-calibrates and it no more detects the object. Thanks!

@JaredLodwickDesign 3 жыл бұрын

Thank you for this video, it was really helpful in figuring out how to work these. I'm having trouble using one as a switch for my Raspberry Pi 4. I took a power supply with a hard switch, removed the switch and swapped in the touch capacitor switch. My voltmeter reads that I'm getting ~5V out, but the Pi won't turn on fully. It has a solid red LED with no green, which from my understanding means it's not getting enough power. If I plug in a normal unspliced power supply (I have a few) it works fine. I'm assuming the switch is limiting how much voltage is going through, but you said it's rated for up to 5V so I'm not sure. Any ideas?

@SimpleElectronics 3 жыл бұрын

Oh careful, it may not work as a hardware switch because I think it is current limited! You can use it to interface with pins on a microcontroller but I don't think it can switch enough current to supply a RPi!

@c0mputer 7 ай бұрын

Will these work through painted plastic or glass? My project has a painted glass cover that I want to mount on top of this sensor.

@adamcreativity9293 3 жыл бұрын

Wao , You amazing sir & ya voice Sweet peaceful & thanks for educating us . 🙏💋

@SimpleElectronics 3 жыл бұрын

Thank you!

@adamcreativity9293 3 жыл бұрын

@@SimpleElectronics You welcome Sir

@taraknathmondal1629 2 жыл бұрын

In Momentary / High Output 00 (1st) mode sensor is off after 12 seconds even when touched. Please help me that we do in ttp223 that it will work as long as 1 stay in touch.

@SimpleElectronics 2 жыл бұрын

That sounds like a hardware limitation to me, not sure it can be changed

@taraknathmondal1629 2 жыл бұрын

@@SimpleElectronics please help any option to solve this problem, or told any touch screen board

@bernaem7703 3 жыл бұрын

Hello friend, thanks for the video, I have a doubt, over the pin I/0, i want to use with ardino esp8266, but, when i near my finger, the pin i/o dont remain with the VCC voltage, if no the voltage is less. I am using like a input in a pin of the esp, but this pin also have the configuration like a pull down. And you know that the esp receive a input up with 3.3v. Have you a practice example aver that please. Thanks advance

@Hakimfrh 3 жыл бұрын

thanks what you explain is very usefull 👍👍

@hugocy9768 2 жыл бұрын

Super cool video, didn't see the 9mn go. As said below by others you explain very well. Now that might sound weird but would this switch work with let's say.. My tongue ? OR is it finger/skin only?

@SimpleElectronics 2 жыл бұрын

Should work fine with your tongue - same as your cellphone screen!

@hugocy9768 2 жыл бұрын

@@SimpleElectronics Thank you! Just susbcribed to your channel

@devrimtuncer8655 Жыл бұрын

As far as i know trigger voktage is negative. İs there a way to make it positive voltage

@francoisBonin-phils 4 жыл бұрын

thanks for the video ,but my problem , the switch does not keep the status "on" , more than 7 sec in the default config , have you tried to leave your finger on it more than 10 sec?

@billglass5160 Жыл бұрын

I have seen somewhere that it re-calibrates its detection parameters every 7 seconds. So if you keep your finger for too long , it will re-calibrate with the presence of your finger and turn off. I have ordered one to confirm what I just said, but it seems to consider "on" in reference to a change of capacitance relative to the calibrated off value.

@ElectricPoliville Жыл бұрын

Add a relay

@albertanasoul 4 жыл бұрын

Thanks for the video, it is the best of about 5 videos I have watched on the topic. Can you please tell me if there is a way to hook up the TTP223 to a piece of metal so that the metal becomes the touch point? I know it can be done if hooked directly to the transistor and deleting the TTP223, but then you have to touch two pins on the transistor at once. I am hoping to have one touch on/off. Could I just solder the TTP223 to the metal or just add a very light capacitor to the appropriate location?

@SimpleElectronics 4 жыл бұрын

I don't see why you couldn't just scrape the solder mask off the touch pad and solder to it, it would just extend the "antenna" so to speak, give it a try!

@coyjin 2 жыл бұрын

did it work?

@cbaxter6527 2 жыл бұрын

Its the solder dot (via) in the corner, or solder to the non-ground side of the sensitivity cap contact. watch those East Indian vids of using a device; you know, no-circuit board solder design.

@matt9640 4 ай бұрын

Thank you!

@MMaheshThakur 4 жыл бұрын

Can u tell me plz.. how to run it on ac main . I mean can I use it on ac by use of register to operate optocoupler or some MOSFET.

@SimpleElectronics 4 жыл бұрын

If you are using an optocoupler, just replace the LED in my demo with the LED side of the optocoupler, should work just fine

@scotnofriends6787 2 жыл бұрын

im trying to conect the touch switch instead of a tact momentry swich ,how do i do this....thanks man ..

@lloydiedesu5131 3 жыл бұрын

do you have tutorial how to use it it 12 volt i am planning to use this on motorcycle with 12v battery just a switch

@SimpleElectronics 3 жыл бұрын

A tiny bit more complex than a comment could deliver - but I'll add it to the video queue!

@lloydiedesu5131 3 жыл бұрын

@@SimpleElectronics this will get viral in the philippines if youll have one motorcycle is a very big community in the philippines please add some relay hehe hope to see the video soon

@IronRuffnek 4 жыл бұрын

@simple electronics How would I use this sensor to trigger a simulated tap on a capacitive touch screen

@SimpleElectronics 4 жыл бұрын

I would have to look into it....however simple you think it may be, it's far more complex than that. This is made to emulate a regular button, it's nowhere close to a touchscreen.

@IronRuffnek 4 жыл бұрын

@@SimpleElectronics I wanted to use the ttp223 externally and simulate a tap on a smartphone

@SimpleElectronics 4 жыл бұрын

Like I said, the tap on the smartphone is read out like an XY coordinate and not like a button press unfortunately. It can definitely be done but it will be very complicated.

@benardopoku3538 2 жыл бұрын

Sir .. will it work with when you have a hand groves on

@SimpleElectronics 2 жыл бұрын

I can't be sure, sorry

@rayjames5200 Жыл бұрын

Very helpful. Do you know what capacitance would reduce the sensitivity of the sensor? You mentioned it should be less than 10 Nano but I’m not sure where to shop or what to purchase. Any advice would be much appreciated.

@TheZaomei Жыл бұрын

0 to 50pF as per a comment and manual.

@DanDomanski9 3 жыл бұрын

Nice video!!

@LEO-xo9cz 3 жыл бұрын

Do you have a video explaining how to use this in a circuit?

@robertbigott9742 Жыл бұрын

try putting some solder on wire first. It is easier and neater.

@jonnyesper6698 3 жыл бұрын

Credit button for my arcade machine :-)

@Unknown-qc9eu 3 жыл бұрын

And WHAT IS THE SMD CAPACITOR FOR

@LukmanSantoso13 3 жыл бұрын

Can I turn on N Channel Mosfet with this board ??

@chungphaminh1775 3 жыл бұрын

Yen Thanks

@captainkairo5681 3 жыл бұрын

Do they require see through material to operate?

@SimpleElectronics 3 жыл бұрын

Nope! Just non-metallic

@tabishakbar8884 2 жыл бұрын

How to increase its range upto few cm please reply

@SimpleElectronics 2 жыл бұрын

I think a few CM is impossible

@amgmg2521 3 жыл бұрын

What is the power consumption of that module alone without the led?

@SimpleElectronics 3 жыл бұрын

not sure! I have to look into it

@amgmg2521 3 жыл бұрын

@@SimpleElectronics I ordered 10 of them for 1$. Will find out. Thanks for the review.

@TheSkogemann 4 жыл бұрын

Very useful! :)

@MrSuchewas 4 жыл бұрын

I think this is wrong. You connected the cap to the connection for external switch! The cap needs to replace the SMD cap you still have untouched. This is why your test is not successful in the end of the clip.

@SimpleElectronics 4 жыл бұрын

It seems both the cap that's already there and those two open pads are in parallel with the touch pad, so they would both adjust sensitivity, but for sure you can remove the cap to modify the sensitivity moreso

@minskie Жыл бұрын

Will this work if you put a coin on the pad?

@Siddharth_Sharma7711 4 жыл бұрын

Awesome

@triangle4studios 3 жыл бұрын

I hate the term maker. We are inventors, philosophers, designers and artists. A maker is such a devalued term. Anyway good video, thanks! Subscribed.

@SimpleElectronics 3 жыл бұрын

I guess it depends on where you stand - I sometimes prefer it because it's inclusive!

@youliantroyanov2941 3 жыл бұрын

Awesome. You must be a Canadian, no?

@SimpleElectronics 3 жыл бұрын

Sure am, what was the tip off?

@BayouBradley 2 жыл бұрын

Great video. Anyone know the best capacitor to maximize the distance the sensor can read?

@Joe_Yacketori 2 жыл бұрын

I believe that would be no capacitor. Adding additional capacitance would decrease the sensitivity, minimizing the distance the sensor can read. The sensitivity cannot be increased without changing the geometry of the device; in other words, the device with no additional capacitor represents the highest sensitivity/maximum distance the sensor can read given the shape and positions of the parallel plates in the device. Someone correct me if I'm wrong.

@cbaxter6527 2 жыл бұрын