Capacitive Sensing (CPS) Module

[Yves]

Hello All,

Some pics like the the 16F1825 has capacitive sensing capabilities. I think it would be great use to avoid those horrible push buttons. Is any one has a look at it and has written a macro or driver?

Regards,

Yves

[Yves]

Hello all,

Is anyone has some info, driver on CPS module and how to address it? It would be most appreciated.

Regards,

Yves

[JonW]

Not used the cap sensing on the MCU but have used the AT42QT1110-MU Q-Touch IC.  If cost is not an issue then these are really good, free up other pins on the MCU and easy to use

J

[John Lawton]

Yes, I've used the Capsense peripheral with a 12F1822. As I recall it was a bit tricky, I ended up having to use a rolling average (i.e. un-triggered) reading then detecting rapid changes from this reading due to user interaction with the touch pads. This was because each unit made using the board was wired differently, so I couldn't establish a fixed 'normal' reading in the code.

BTW, have you digested Microchip's AN1171 ?

John

[Craig]

The MTCH108 from Microchip works very well

https://www.microchip.com/en-us/product/MTCH108#

[Yves]

Thanks for all the suggestions. I tried to understand the Microchip's AN1171 my knowledge to understand and digest all the explanations is overwhelming. I am sure it is not that complicate for a lot the great Positron developers here. I may have a go at it and try to make it work and try to write some code. Maybe someone has done it as I think it is the way forward to get rid of mechanical buttons.
On the other hand I have wrote something which work for me and works on any pics using the RCin function which I tested and I publish not long ago.
 
https://protoncompiler.com/index.php/topic,557.msg4936.html#msg4936

It works like a charm and don't requires any extra chips and will soon implement it in one of my projects and maybe do a small demonstration video.
Best Regards,

Yves