dewagter
commented
6 years ago - uC is ATMEGA162-16AU
- C41 we used a 330uF 10V, but 470uF 10V would be better if you can source it
- X1 should not be a crystal but an oscillator circuit of 7.3728MHZ, which allows for perfect baud rates and is less than the max 8MHz that the Atmel can run at 3.3V
I assembled my boards with U3 and C8 left unpopulated and R10 fitted with a zero ohm as the ADP2300 is now set up to give 3.3V.