Setup bluetooth a2dp sink

https://scribles.net/streaming-bluetooth-audio-from-phone-to-raspberry-pi-using-alsa/

https://gist.github.com/mill1000/74c7473ee3b4a5b13f6325e9994ff84c https://gist.github.com/mill1000/74c7473ee3b4a5b13f6325e9994ff84c

sudo unzip -p 2019-04-08-raspbian-stretch-lite.zip | sudo dd of=/dev/sda bs=4M conv=fsync status=progress

Setup and connect to zero without wifi:

https://raspberrypi.stackexchange.com/questions/73523/connect-pi-zero-via-usb-rndis-gadget-to-ubuntu-17-04

https://github.com/adrianomarto/soft_uart/blob/master/README.md

Reroute audio to gpio header:

https://raspberrypi.stackexchange.com/questions/49600/how-to-output-audio-signals-through-gpio

https://github.com/raspberrypi/firmware/blob/master/boot/overlays/README

audremap GPIO12-GPIO13

https://raspberrypi.stackexchange.com/questions/83610/gpio-pinout-orientation-raspberypi-zero-w

#ipod interface

https://stackoverflow.com/questions/1720568/whats-needed-to-use-the-apple-accessory-protocol

https://github.com/oandrew/ipod-gadget

http://pinouts.ru/PortableDevices/ipod_pinout.shtml https://nuxx.net/wiki/iPod_Dock_Connector

https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=163182

sudo apt-get install git

sudo apt-get install python3-serial sudo apt-get install bluealsa

sudo cp *.service /lib/systemd/system sudo cp a2dp-agent /usr/local/bin sudo cp ipod_emul_daemon.py /usr/local/bin