LIA sends a pet’s location by radio without a SIM card
LIA is a collar tracker that calculates its location from satellite signals and sends it by radio to a compatible receiver, without a SIM card. On a farm, an owner could see the reported position if a radio path is available. This experimental design cannot guarantee that a pet will always be found.
A collar tracker calculating a position from satellite signals and sending it by radio to a compatible receiver.
View full-size imageHow does the position reach the owner?
LIA’s satellite receiver estimates its position. LoRa, a radio technology for short messages over relatively long distances, carries it to a Meshtastic-compatible device. Meshtastic is software that passes messages between radio devices. An ordinary phone alone is not a LoRa receiver.
What stage has the project reached?
Hackaday covered the LIA design on 25 October. Its creator still describes it as experimental; if the radio path breaks, a new position cannot arrive. The design files are available under CC BY-NC-SA 4.0, and commercial use requires the creator’s permission.