Multi-Button CSM with Pic16LF722A

[RWright]

Sorry for the repeated post.

[richard]

for barry

Has anyone had any experience with a 2 channel CSM slide switch?
I would like to implement a slide switch rather than an up / down button arrangement to select the PWM output for a LED string.
In my case, the granularity is quite coarse - only eight steps of PWM selection.

have now, seems to work nicely

slider as per http://ww1.microchip.com/downloads/e...tes/01250a.pdf
made on ds board the bottom side is unconnected, slider pad are 10mm*40mm the top is grounded
covered with sticky tape (durex for a sniker from the euro's)
see pic

[richard]

a slider design like this on single sided board is worth trying out,i think it would be more sensitive and the board could be painted to encourage the user to slide finger along the horizontal line. next time i'm doing some chemical etching I will make one [if I remember]

[Ioannis]

Is it necessary to have the ground line in the middle of the two channels? Won't this affect the operation.

Ioannis

[richard]

Is it necessary to have the ground line in the middle of the two channels? Won't this affect the operation.

according to this app note it is

http://ww1.microchip.com/downloads/e...tes/01250a.pdf

I have not tried without it , the other way is to use a chevron pattern which has no earth requirement
but uses more pins [several]

[Ioannis]

OK, yes. It is used toi isolate the two sensors between them.

Thanks,
Ioannis