Ich habe zum ersten Mal eine Platine geätzt
This is my first working prototype.
- plays mp3 music from sd memory card
- shows status messages on an spi interfaced display
- communicates via rs-232
- receives and decodes the dcf-77 signal to drive a precise clock
I got the RS-232 connection working. Nothing special, but from that helps a lot when debugging
I had success interfacing the HD44780 display
Worth an entry: The first day I have ever programmed a µ-controller myself. My aim was to build a digital alarm clock and this led me directly into the world of digital electronics.