There are 3 repositories under raspberry-pi-image topic.
Raspberry Pi 4 Buster 64-bit OS with deep learning examples
lepidopter: raspberry pi image for conducting OONI network measurements
Pre-built Raspberry Pi image for headless configuration & deployment of an APRS i-gate using direwolf & sdr
Zero Config purpose built Raspberry Pi OS Image for Ambianic Edge devices. Ready to flash on SD Card.
How to create a custom Raspberry PI Images with HashiCorp Packer. The image will have SSH enabled , Default jre,Node js,Redis server, Access point and wifi enabled and docker already installed when you boot up your Raspberry Pi. Everything is done in Ubuntu.
An MQTT and traditional GPIO Enabled Hot Tub and Pool controller for the Raspberry Pi