durability – How can I extend the life of my SD card? – Raspberry Pi Stack Exchange
A few good suggestions here. Absolutely to nobody’s surprise, it turns out systemd quietly sets up swapping to /var/swap, so that’s a good one to turn off if your RPIs are not RAM-bound
(tags: sd-cards lifetime raspberry-pi hardware linux systemd)
[monitor] Reliable, Multi-User, Distributed Bluetooth Occupancy/Presence Detection
A HomeAssistant integration to enable automations based on room occupancy (“is X in the front room? turn on the lights” etc)
(tags: homeassistant bluetooth ble room-automation home-automation hacks)