pot values are wrong

[Synergic]

hi!

i´m doing a midibox64,i have 2 ain modules,2 din modules and 1 dout module.

the midibox64 latest firmware for pic18f452 is correctly loaded.all modules are powered to 5V(not the dout module).i put 63 ain inputs to ground and one conected to a 10k lineal pot,but the value of pot on the lcd only goes from 0 to 97 or 102.

what is wrong? how can i solve this? pots value may goes from 0 to 127..not?

please answer me!! i´m going crazy!!  

Thorsten help me please!!!is very important!! :'(

thanks !!  ;)

[Guest pHaTb0y]

Maybe all thos pots connected between +5V and GND cause a current drain, so you're having less than 5V. Try measuring the voltage, then using a more powerfull transformer (I tested mine with an old AT PC power source, cause I'm having trouble powering it with a wall wart, rated 500 mA). I'm still working on this issue.

[Synergic]

ok! i found the fault!

i was using diferent power supplies,one of 12V for core and one of 5V for modules and pots!

it seems that pic need to use the same power supply to get the right values.

thanks for your help eh!!!!

;D