hid-emu

A keyboard/mouse switch that works on a Raspberry Pi Zero over bridged ethernet or a Raspberry Pi Zero W over Wi-FI.

Setting up

Flash Raspbian Lite on a Micro SD card
On the flashed card, edit
- /boot/config.txt to have dtoverlay=dwc2
- /etc/modules to have dwc2 and libcomposite
- /etc/rc.local to have /home/pi/hid-emu/usb_device_emu before exit 0
- /etc/systemd/system/dhcpcd.service.d/wait.conf to have ExecStart=/usr/lib/dhcpcd5/dhcpcd -b -q %I instead of the previous command. Speeds up boot by ~30 seconds when a DHCP server is not immediately available.
Clone this repository to /home/pi/
Boot the Pi with the card
If not using Wi-Fi, bridge the RNDIS interface with your ethernet interface to get LAN (and internet) access
Use your preferred method to secure the connection between client.py (ran on the device that has the keyboard) and server.py (ran on the Pi on boot). By default the connection is over plain TCP socket. Remember to edit server.py so that it doesn't listen to all interfaces.
Run client.py