Again ADC with 12F675 ...

[fratello]

Thanks ! But still no have answers on my problem ...

[Gusse]

Hi Fratello,

1) Do you have two PCB with different resistor values?
or
2) Have you changed resistors to same board and tested with two SW settings?

In case
1) there must be some other differences on PCB
2) resistors are not with correct values

[fratello]

Thanks, Mr. Gusse, for support !
I have only one PCB, without the resistors from chain (just R2=1k is soldered on PCB, between +5V and ADC_IN).
I put the resistors from chain 1 from R2/ADC_IN to ground ; in first case works perfect.
Then I soldered the R9=100k from R2/ADC_IN to ground ; I put resistors from chain 2 into circuit (in parallel with R9). In this case nothing happens.
All the resistors are measured, look to be OK (this was my first concern too ...).

Tomorrow I'm going to try to set some debounce ...

[fratello]

Update picture...

[fratello]

SOLVED !!!
In first case the code is :
"If adval > 419 and adval < 536 then gosub LED" = working fine.
In second case :
"If adval > 450 and adval < 600 then gosub LED" = NOT working.

So I tried this :
"If adval < 600 and adval > 450 then gosub LED"
And VOILA, IT'S WORKING !!!

Thanks for support ! Regards !

[Demon]

I don't get it. That looks identical to me.

Robert

[fratello]

For me too ... But I can prove it (by video) !
Maybe because when no button is pressed, ADC reading is NOT 1023 ?!