MM100 + MK190 + Arduino + LCD20x4 = RDS-Radio


#1

I made a radio with some Velleman modul / kit. It works fine!

There are two small issues:

  1. Display updates produce a noise. One can hear it when music or speech is quiet.
  2. A station at 96.00 MHz is noisy (in stereo mode) although its signal is strong maybe arduino’s crystal 16MHz is causing this?

Schematics:

Has anybody an idea if I can improve these issues by some capacitors?