Demonstration of vwcdavr code emulating android headphone buttons
avr code from https://github.com/tomaskovacik/vwcdavr/ - radio_emulator for emulating radio - cdc_arduino_ported_k9spud_vwcdpic_just_8bit_timers.ino as CDchanger emulator
audi chorus cd changer emulator with phone control function
http://kovo-blog.blogspot.sk/2013/11/how-to-enable-cd-changer-input-on-audi.html
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https://www.youtube.com/watch?v=bo7EMVDH0HE
Comfort turn signal (tripling) by johnyHV, I made one for my car and as always you can buy cheap module at my Tindie store https://www.tindie.com/stores/tomaskovacik/
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https://www.youtube.com/watch?v=ego9ON3mz9w
Volume fix for audi concert 1 and chorus 1,
Whole project is OpenSource hw and sw:
https://github.com/tomaskovacik/audi_concert1_chorus1_volume_fix
Whole module or Kit or just PCB is also on tindie store:
https://www.tindie.com/products/tomaskovacik/volume-fix-for-audi-concert1chorus1/
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https://www.youtube.com/watch?v=YbFa_UYPMRQ