Arduino morse decoding

Google- Translation:
After the excursion into the beginnings of the radio, here the attempt with the Arduino platform Morse code to decode. There are three options. Enter with Morse key via a Morse generator to be implemented, input via line-out of a HF receiver or other sources and via microphone. The latter is presented here.
Base here: gemander.org/20...
Finished with LM386, LM567, NE555 Tone Generator, RTC, Temp, Button, CW in / out, Audio in
Joe in November 2017