「ʀᴏʙᴇʀᴛ」Jan 26

My "Buurtmelder" (“Neighbourhood Notifier") project is coming along nicely.

It's an ESP32/RP2040-based device with a 433Mhz receiver that can be used to sniff RF codes sent by (cheap) home alarm systems and broadcast alarm activations to the entire neighbourhood (because neighbours are always closer than police in case of emergencies).

Initially it used LoRa for broadcasting, but because it has some reliability issues it now uses MQTT-over-WiFi with a LoRa fallback.

You can also add "beeper satellites” around the house so you don't have to be near the terminal to see if there's an active alarm. When there's an alarm, the main terminal will use ESP-NOW to tell the beepers to start beeping.

#esphome #homeautomation #homeassistant #lora #espnow #esp32 #rp2040 #mqtt #makers

Show threadPiolaq
@robertklep So does this sniff the alarms of other people and than alert via Buurtmrlder? And you could also sound other people's alarms or do they need to have the Buurtmelder?
Jan 26 at 11:26amWeb
Show thread「ʀᴏʙᴇʀᴛ」Jan 26
@piolaq The idea is that participants each have their own terminal, and it learns the codes used by their alarm system (so the terminal is tied to a specific system). Then the terminal broadcasts the signals to the rest of the neighbourhood (where "a neighbourhood" is basically a group of people that have their terminal set up with the same group name and encryption key) using MQTT and LoRa.