Capacitive Touch Button by using ADC channel (the CVD system)

[HankMcSpank]

Hank, I'm so glad you chimed in. I've been reading your posts about your relaxation osc. and the 16F690 with great interest, and I watched your youtube video. the 690 seemed like an easy way to get multiple channels. I've done a few single channel, relaxation osc, cap sensors using a comparator and a timer in the 16F628A, but I was always limited to 1 channel. Then, I got the 16 channel mux and SOIC breakout board from sparkfun and I made a 16 key piano - thats probably my most fun project yet. I really should post the code, it could be so much better.

You were up and running in 20 min?!? jeez, what am I waiting for! did you use PBP? 2.6 or 3? or... (shudder) C code? :-) what did you program it with? pickit2 pickit3? I might pick your brain a little more later.

The 20 minutes on the 12f1822 was probably becuase I'd had to go through the ordeal of getting the 16f690 to work with capacitive touch (& for all even now I'm just one rung up from n00besque territory, back then I wasn't even that!)....and it's not the most beginner friendly! (perhaps it was a rite of passage, to 'grasp' the cap touch basics?!) Seriously, it's incredibly easy to get 4 channel cap touch working on a 12f1822, 16f1824,1827, 1829 etc, what I strongly recommend though is getting the PIC to send info to you PC so you can see the cap module output into TMR1 count

To your other questions, I was using picbasic V2.6, pickit2 - I'll try & post something soon(ish) to get you started.

As it goes i was searching the globe yesterday trying to track down a PIC16LF1829 (XLP variant) - nobody seems to stock them, 'microchip direct' do...but they charge about £15 delivery ($23!) - stuff that!