Capacitive Touch PIC16f726

[cobra1]

Hi Guys

I was just looking for a replacement to my QT320 IC, i came across the PIC16F726, this pic has a capacitive sense module built in.

Has anyone ever used flowcode to use this feature??

Can flowcode even be used to make this feature work?? I need to 4 keys to replace what i have already.

[medelec35]

Have you tried selecting PIC16f726 device?
I did not think flowcode V3 supports that device?
Thought it was only flowcode V4 that does?

[cobra1]

V3 doesnt have the 726, but if i know i can make it work on V4 then i would probably buy v4 to do the job on,

I have seen other people use chips like 16f610 and 16f887, but i dont understand how they do it.

[cobra1]

just been reading that this can be done using adc, using the internal capacitor.

Anyone got any idea how to make this work in flowcode??

[Benj]

Hello,

Yes this is possible using only an ADC input and maybe also a timer interrupt.

Here is an app note from Microchip detailing how to do it.
http://ww1.microchip.com/downloads/en/A ... 01298A.pdf

And here are the files from the app note.
http://www.microchip.com/stellent/idcpl ... e=en545264