Ambika controller problems

on powering up i get the display showing and the potentiometers alter the frequency/resonance etc but none of the switches will change to any other page. With an oscilloscope all the switches read high and then go low when pressed. I’m more comfortable with electronic construction than programming atmegas. I just burnt the controller hex onto it, could the programming be the problem. I can’t see where else to look?

Be sure you got the correct resistor network. Check the part. nr. If incorrect you can use 9 10k resistors in parallel :slight_smile: sip-b-10
If not check the 74hc165. You shouldn’t have problems with programing.
You say you have 5v on all buttons? check the resistor first!!
The display seems a to have no light.