Build Your Own Arcade Controls Forum
Main => Main Forum => Topic started by: zzgus on March 29, 2019, 11:57:47 am
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Hi.
I want to use a "touch button (capacitive" in one of my projects with a "zero delay" control board.
The problem is that I really have no idea of how to wire the touch button + zero delay.
The touch button has:
GND - Ground / to the common ground of the zero delay button I choose ???
OUT - ?
VCC - power 2,5 to 5,5v / to the +5V line of the usb connector ???
Any help will be gratly appreciated.
Thankyou
Gus
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I think I got it.
Attached image.
Can someone confirm it's the way?
Thankyou
Gus
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Looks like the only thing that might be a problem is that the ZD encoder is an "active-high" device (uses 5v to trigger the input port), but most modern electronics are "active-low" devices. (use ground to trigger the input port)
The Sparkfun version of the sensor here (https://www.sparkfun.com/products/12041) apears to work with active-high devices.
As long as a touch (e.g., from a finger) is detected, the AT42QT1010 keeps the output line high. Otherwise, the line is kept low.
The Adafruit version of the sensor here (https://www.adafruit.com/product/1374) also appears to work with active-high devices.
When a capacitive load is detected (e.g. a person touches the sensor-pad area) the red LED lights up and the output pin goes high.
Just to be sure, can you post a link to the sensors you're using? (Bonus points for including a datasheet link. :D )
If your sensors are active-low, there are several threads like this one (http://forum.arcadecontrols.com/index.php/topic,137899.0.html) discussing how to use a solid state relay between an active-low coin recognzer and an active-high ZD encoder.
Scott
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Just to be sure, can you post a link to the sensors you're using? (Bonus points for including a datasheet link. :D )
I bought on aliexpress and there's not too much info about it.
Yesterday I tested like the diagram I post and appears to work well.
Thankyou
Gus