Microlab speaker auto start
You'll find more info on https://slomkowski.eu/projects/microlab-speakers-remote-hijack/.
Compiled under avr-gcc, CMake required.
Compile
mkdir -p build
cd build
cmake ..
make
Program the Digispark
micronucleus --run microlab-speaker-remote-hijack.hex
Then plug the Digispark module. It is programmed.