SDIY Class # 7 - Taktile : A simple pressure sensitive Touch Pad!
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- Опубликовано: 8 авг 2024
- Here's another alternative controller idea, based on the human body's resistive properties. Very simple project with cool results, enjoy!
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/ quincas
Stay noisy! See you next week with the first installment of a series on the Erica Synths Polivoks voice bundle! 
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Wow you could build some very expressive modules with this ooooooh yes !!!!!! . Great tutorial aswell :-)
Did a DIY workshop at Knobcon last week and built a Benjolin. Very awesome experience and can't wait to start building modular synth kits now!
Pete's Benjolin! I've got one too, so awesome :)
Have fun!
Great simple idea. Here is my simple tip. Be sure to properly etch the blank pcb.
In my first attempt I didn't leave the board in the etch solution for long enough to properly remove the excess copper.
I snipped off and tested a small piece of your my pbc material to see the colour of the bare board underneath.
Thanks Synth DIY Guy.
PS I spent a month in Mexico DF in the late 1980s. What an amazing city you live in 👍
Genius with a flair of creativity!
thanks!
You actually just inadvertently gave me an idea how to make a velostat-based pressure sensitive pad, by making a DIY PCB with interleaved traces then bridging them with the velostat. I've been experimenting with building sandwiches of velostat, copper and silicone rubber, but this would be way easier to make and still much cheaper than buying pressure pads. Also no need to solder the pads to the board, it would all be integrated.
Thanks for posting this video! It inspired me to make my own single octave "keyboard" where instead of keys it's got copper traces that resemble finger bones
sounds great, any pictures of this?
The reverb on your voice is very tasteful. Great vid by the way, I always assumed resistive touch was more complicated circuit-wise.
Thanks! I chose to keep it simple, but it could benefit from a buffer before the low pass RC filter!
Man, your voice make my brain purr
Ohh :) . Meow
that wind patch though! its a real clever one!
thanks!
So simple and so genius 👍
Why would someone give this a thumbs down? Great video in my opinion.
Thanks :)
I know this comment is 4 years old, but a RUclips video can't have more than 10 likes without getting a dislike. Some people just think it's fun to be contrarian
@@outbakjak Yeah, truth.
Wow that's clever. Thanks for this
Thanx, my friend! Great videos!
Hey, my pleasure, thanks for watching :)
Thank you!i i think i totally might give this a go!
have fun!
Thank u for ur inspiration.
Excellent stuff again :)
Thanks!
Nice, going to build one too!
enjoy!
Very cool idea!
Thanks!
YES! LOVE IT! KEEP IT COMING
Thanks!
I'm thinking synth guitar. Thanks for the video. I was looking at capacitive switches, but this looks like a better solution.
Thanks! Very nice experience )))
Thanks for sharing as always. Was laughing a bit at 2:45 when you say to use gloves... and you're not wearing gloves ;)
Demag lol, yeah, do as I say, not as I do!
Everything ok there in Mexico city? Hope you, your family (and your synths) got through that earthquake unscathed...
My family and I are fine, thanks (So are all my modulars). We are helping with rescue efforts as best we can. Thanks for your concern.
excellent, thanks a lot
Nice video!
Thanks!
Hey there, this is an awesome video!
At the very beginning you mention doing a workshop where you made a three voice synth using this technique. Did you happen to make a video ever of doing that project or do you have a schematic?
I would very much like to do a drawing , etch it and have it control some drone voices all in one box.
Many thanks 🙏
great video, it was what I was looking for for a while,..
I would like to know if I'm right or not.. As i read in the comments before, Tomas I think was the one, he asked how about to put 4 all in parallel with the same power source (I'm using 9v), meaning at the end I will have 4 outputs. with 4 pots as voltage dividers. my plan it;s to use those outputs as VC to "disturb" 4 oscillators with a Vactrol (homemade) between the output and the oscillator... it's that correct? i'm building my first diy drone / noise maker and I'm somehow new to the DIY world
thank you!!
that should work, try it!
I'm impressed! So if I want to put this on an eurorack module, i just need to ignore the battery and use the power supply? Can I make more than one "tactile pad" -lets say four- in the same module? Only thing I would need is to take voltage in parallel for each pad, right? Did you find a potentiometer that gives you a "nice range"? I know it might be limit my possibilities, but maybe replacing the pot for a fixed resistance will make the module more confortable to play.
Hi! Well, you don't want to put the 12v from your PSU right on a terminal exposed like that, so you would use a resistor, I'd say at least 100k. Yes you can have many pads fed in parallel, each with it's own resistor from the PSU 12v. The pot is set up as a voltage divider, so it doesn't matter too much, 10 k or 100k work equally well. you can use a fixed resistor divider, but it's nice to be able to set the range, so maybe use a small pot going through the front panel. on the top where it won't get in the way of your fingers.
@@QuincasMoreiraGuy out of curiosity, is that because it's a risk of short-circuiting or risk of electrocution? lol
@@nasound2473 short circuit, PSU damage, etc. You can't get electrocuted with 12v DC ;)
@@QuincasMoreira ah ok haha. Thank you!
That's really cool. I'll do some prototyping with copper tape to try this out.
Muito massa!!
"I had no alcohol so I used some cologne my wife gave me." Man after my own heart
hey diy guy, great stuff to do! i just made it but with 10 uF cap (was the only available at similar capacitance!).. is this making a big deal? the pressure pad works while set as CV/O. input for Erica Synth VCO but i couldn't get any result in a Kotelnikov VCO.. might it be a problem of which range of voltage is accepted by the Kotelnikov?
Hi! A bigger cap will add some slew (glide, portamento) to the voltage output, which can be cool or not, depends on what you want :)
As for the Kotelnikov, no idea why it wouldn't work. Maybe try buffering the voltage from the Taktile before it hits the VCO.
Have fun!
This is inspiring! Don't know much about electricity, but is there any danger when including your body in a patch like this? Or why not? Too low voltage? Thanks
Exactly, it's like touching the terminals of a 9v battery, literally! No danger at all, just fun :)
Woooow you can actually dance on that or call E.T.! Hahahahaha
hi, this thing is awesome, considering how easy it is to put together.. I built it with some bare copper wire and it works great, thanks for the video.. I have one question, is it possible to power it directly from the busboard and avoid the battery or a CV source (I'm now sending 10V from a MI Shades)? thanks! ✌
Sure! Just use a resistor so you don't short your power rail, at least 10k!
@@QuincasMoreira great, thanks for the help✌
Thanks for this great Video :)
How long does the ferric chloride take to etch away the copper?
Got a pcb in a 40% solution for hours but nothing is happening..
prefect eli should be about 20 minutes, sounds like there’s something wrong with your solution... Is it from a fresh new bottle?
Its straight out the bottle, but i think i solved the problem already.
I closed the container with the ferric chloride and the pcb, so no oxygen.
I opened it, I think now its working.
Thanks for your quick reaction on my post :)
nice!
Thanks for the demo. I made my own take on this design using copper tape and no capacitor and it works great, but my pitch descends, while your seems to ascend (5:43). Why would this be? Also, I would like to make a similar design for a breadboardless gate/trigger pulse to trigger a Clouds freeze or an ADSR. Would you have any ideas for this? So far, I am able to trigger only one module (Synthesis Technology's Circuit Bent VCO) using the copper tape and no extra voltage other than my body. Thanks for your great work.
Hi! Pitch ascends because when I apply pressure the resistance goes down and a higher voltage hits the VCO. I don't know why yours descends. To make this into a gate generator use a comparator circuit! Look up opamp comparator for ideas, or my own video on opamps. Cheers!
@@QuincasMoreira Big thanks.
awesome! definitely adding this to my diy list!
btw I have a copper clad plat but never used one.. you think it's ok to draw with a sharpy & just peel or sand off the copper in between? I'm cutting costs & complexity anywhere possible (ferric chloride in this case)
You can sand it off, but if you do that, there's no reason to mark it with a sharpie, the purpose of drawing with the sharpie on it is to cover the spots that you want the copper to remain. So if you're not etching it, no reason to mark it, other than as a guide. You can also use a knife or whatever sharp instruments to remove the copper.
@@videotrexx hii thank you for you reply. I did do it. I was trying to show you but yt won't let me post links
@@kuro758 Great and you're welcome.
Hola, gracias por compartir la construcción de este dispositivo!. Me gustaría adaptarlo para eurorack pero basado en los comentarios aún tengo algunas dudas. ¿Debo colocar las resistencias de 100k en los polos - y +?, ¿Podría colocar un regulador de 12v a 9v en lugar de las resistencias?. ¿Existe algún riesgo de dañar la fuente si mi panel es de aluminio y encima pego mi pcb? Saludos!
What supplies do u need to make these boards???? Like what kind of copper board??? And where do you suggest getting them
I just get them at a local electronics shop. They are just blank PCBs, which you would normally etch a circuit on. I just etch a touch surface instead.
Something like this will do: www.amazon.com/Single-Sided-Copper-Laminate-Circuit/dp/B01LX99SO8/ref=pd_lpo_vtph_23_tr_t_2?_encoding=UTF8&psc=1&refRID=PHKNQ6E45H9YA0HHNGHK
wow!!! awesome =))))))
Thanks!
Very interesting!....could this idea be applied to create an expression device to control a hardware digital synth using its expression pedal input??.it would work to substitute the potentiometer of an expression pedal by a pcb surface like yours, using the 5volts provided by the expression input of the hardware digital synth? Thank you and sorry if my idea is nonsense...
I think it could be done, yes! A pedal is a voltage divider though, this is just a variable resistor, so it would take some experimentation to get it to work well
Thank you @@QuincasMoreira!
Cool
Thanks!
Holaaa, primero gracias por hacer este tipo de videos, ayudan bastante, al final cuando lo usas para producir ruido blanco, no logré entender muy bien como funciona, a qué va conectado? Un filtro? Si es así que clase de filtro? Esto podría fumcionar si en vez de usar una placa de cobre armo un diseño con aluminio? Te lo agradecería jej soy principiante, Saludoos
Hola! Este solo es un controlador, no produce sonido. En el caso del patch de ruido blando, le conecte un ruido blanco a la entrada de audio de un filtro Low Pass, y la salida del Taktile a la entrada de control del cutoff del filtro.
Saludos!
@@QuincasMoreira Hola, me encanta tu video! Podrías ampliar un poco más esto? No entiendo bien a que lo estas conectando físicamente. A que conectas el jack? y como haces para elegir como querés que suene? Que es Taktile? El filtro se pone con algún software? Disculpa, soy nueva en esto. Saludos
Why does it sound like my old man passing gas in the morning? Ha ha!
Can you do a video on making it usable in a Eurorack? Pressure points is good but not cheap, a DIY version would be great.
Phil, I am using it with eurorack! Just plug it in and have fun! If you mean making it into a module, just skip the battery and enclosure, make it a panel and use the +12 from the Euro PSU ;)
@@QuincasMoreira is it safe? Isn't the current to high? I don't understand anything about electronics lol, but i am scared of touching it haha
@@franciscooliveira7089 completely safe, like touching a 9v battery!
GENIO GENIO GENIO GENIOOOOOOOOP
nice!
it can be used with a 12v circuit? (eurorack modularsynths)
yes
Nice 👍! Where did you buy the enclosure?
at a local electronics shop!
How do you layer solder points like that? Whenever I try to solder a second thing to something that already has a connection, the first thing falls off as soon as the solder heats up!
What kind of pannel are you using for the copper sheet? Im wondering where i would find something like that.
Hi, that's not a panel, it's a blank PCB! Same material you use to etch circuit boards at home. I get it at a local electronics shop. Cheers!
Oh! Awesome. Thanks for the info!
I had fun to make ur schematic circuit, i have plug it to my guitar effects but sounds not the same . What ur suggestions plz ?
Thank u and Greetings from Deutschland
Can it have a specific sound once you touch it? If so, how?
Hi John. It's generating a variable voltage to affect voltage controlled parameters in modular synths, but if you use a comparator circuit it could also generate a gate signal, which you could then use to trigger a particular voice, or even a sample using something like the Tsunami Wav trigger. Cheers!
hello. this alternative control, besides the other, what other applications, I can use where else
Adriano Fidel hi, you can use it for anything that takes voltage control. VCas, vc LFO's, etc. Just use your immagination, experiment and have fun!
:-) thanks !!!!
Back at ya!
a "boutique" option: the arduino raindrops plate worked grrrreat. Thanks !!
very awesome and cool! can i ask some questions ?
Ask away!
how to make the picture (if i would like to make a "printed" art) on it? 2 lines in image that do not cross each other, but the image itself is very presize and kinda like "printed". is there any technical way of doing it?
hope i made myself clear. i would like to create a piece as such, but the drawing i would make as certain image i would love to be on it, but this image is in vector, and by hand it is difficult to make it. so is there a way to "print" in on plate?
Hi! Yes there is a way. Indeed it's how we transfer circuit designs to such blank PCBs. You print your design (mirrored) with a laser printer on lasertran paper, or magazine paper, or transparency, then iron it on to the copper. There are also photo/optical methods which are a bit more involved but more precise. Research "Home etched PCB" or something like that, you should be able to find a lot of tutorials. Have fun!
you can see us do it in this video: ruclips.net/video/wulg6GZj6oE/видео.html
I guess this must be a similar way ribbon controller controllers are made :-)
Adamski Ajull FSR are done similarly. Ribbons are different, one terminal is conducive and the other is resistive.
Synth Diy Guy Hmm ok thanks for clearing that up for me :-)
Cheap ribbon controllers: Alumin(u)m strips (cheap at hardware store), old VHS Tape (recycling center?), and doublesided foamtape (bookstore, papercraft supply webshops, or the industrial strength version at the hardware store), and much the same electrical parts as in this video, but maybe make it "synth powered", so you can do sick bipolar cv sweeps.
In fact, that's a nice video right there. Have at it Quincas! ;)
edit: Okay i'm having a huge facepalm moment right now, sdiy class 6 already covered just about everything I said.. My mind, where is it today?
devjock . Thankyou for the info all the same . :-)
Esto podría usarse para sustituir botones?
seria otro circuito amigo
what kind of audio jack is that? I don't think i have the right one
Hi! Any kind of mono audio jack will work, for eurorack you should use a 3.5mm jack. I use the PJ301 BM : www.thonk.co.uk/shop/3-5mm-jacks/
Synth Diy Guy thank you! a couple more questions, what did you plug it into to get sound? also, can the touch plate just be square?
Can one use this instead of a keyboard to control the full 60 scale octave
yes, but without much control. You won't be able to divide the octave evenly in 12 steps and play traditional scales, if that's what you mean
what do you mean by 60 scale octave though? An octave has 12 notes in the traditional western tuning, or infinite if you simply see it as a continuum...
what could you do to make it plug into a fling bus cable instead of a 9volt so you can stick into your modular case?
You can use Eurorack power, but to avoid shorting out your power supply, use a largeish resistor, like maybe 470k from +12 to the touchpad. Do NOT connect 12v from your PSU straight to the touch pad, as a cable tip, loose screw or any other metal thing could short out your entire rack and damage your PSU and possibly even some modules.
why a 470K is you dont mind me asking?
Intuition? Guessing? LOL
It's high enough that your case won't be harmed, but you may be able to go as low as 100K safely. 470k is a common value and it's about half of 1M. Try different values and see how it responds!
Hello, complete NOOB here. I’m trying to use this, with a simple NE555 in astable mode circuit, but I don’t know where to connect the speaker. On your top schematic, where the jack goes, you wrote signal, is that signal in, or out? And on the second [smaller] circuit you drew, you wrote out at/on a potentiometer? Please clarify this for me: how would you connect a simple ne555 to this circuit AND a speaker. Thank you kindly
What actually makes the sound? Is the Taktile plugged into a synth? Or are you using something like Max for Live to control a vst?
Do I need the copperstuff, or will thin wiring work too?
sure! Anything that conducts!
Cool, I've got acces to a 3dprinter so thinking about simple analog cv keyboard for my modular
Holaa Synth Diy guy! Si estañas la placa funcionará igual?
Muy probable que sí! mientras todo siga conductivo no habrá problema.
Lo probaré y te digo! Gracias :D
por favor!
Is there any risk of shorting out or hurting other circuits in a modular synth? Say if I'm touching this and then grab a patch cable thats plugged into something else?
kimmy_future Hi! Your body is a resistor in the order of Megaohms, so no :)
However if you power this with euro power do use resistors so you don’t accidentally short the positive rail to ground.
@@QuincasMoreira Got it! thanks!
Might be a quite dudmb question.. but can i simply plug it into a speaker?
F3ncheltee It doesn’t make sound, just generates a control voltage you can use to modulate parameters in an analog synth.
So in order to make sounds i do need an analog synth?
yes. think of it like a computer keyboard... It does nothing without a computer attached. This is only a controller, does nothing without a synthesizer attached ;)
Ah I understand! So is there a way to connect this to a digital source or an audio source directly? I'm new to analog synths so excuse my 'dumb' questions :)
There are no dumb questions!
This device is simply a 9 volt battery with it's intensity variable by finger pressure. It doesn't generate digital information, only a voltage variation. You can use it to control an LED light for example. Analog synths respond to voltage variation, it's called Voltage Control, which is why this device works well to control parameters in an analog synth. If you want to use it to generate digital information you'd have to use an analgo to digital converter, which is a totally separate device.
:-)
Can i use this device with Fruityloops
It's analog, you would need a cv to midi converter
@@QuincasMoreira thank you!
@@samhamers Look into Sensel Morph, it can do similarly and has midi over USB and Bluetooth
ruclips.net/video/8Lb13bFhu9A/видео.html
What is this schematic?
A synth pad!? Lol
* Orders ferric chloride from Amazon...
cool :)
Exactly
@@QuincasMoreira Actually, I ended up using hydrogen peroxide and muriatic acid and it worked great! I'm almost done building a box I that has four of these in parallel running off of a 9V DC power supply from a BOSS guitar effects pedal.
@@TheGrrson Cool! Would love to see the box when you're done!
Synth Diy Guy I’ll email a pic when it is done! Also, you can see the little DIY euro rack synth I built on my Instagram @graysonmendenhall Thanks!
What’s with the haters downvoting this vid? What was so offensive? Haha