I wanted to make a circuit on a PCB, in which the Arduino (Atmega328) performs some functions (involving ADC & LCD).
The atmega is programed in the Arduino board itself and then transferred to the PCB.
Referring this http://itp.nyu.edu/physcomp/Tutorials/ArduinoBreadboard
I built the circuit but my LCD is not working, I checked the connections and the coding (using the LCD Lib - 4 bit) and everything seems fine.
What could be wrong? The LCD works with the same connections and code on arduino board. Should I add some capacitors or is it something else?
Also in order to use the ADC, I should connect AVCC pin thru a Low Pass Filter...any suggestions for it, I have plenty of capacitors and some inductors too...