Based around a STM32WLE low power LoRa module 868MHz and a couple LR44 button cells, should last six months or so per set of batteries. Total weight of the assembled unit is about 15 grams and has a range of atleast a few hundred meters.
Depending on if I want to take the project further over time I really want to refine the radio direction finding setup. I’ve been thinking hard about the possibility of building some kind of doppler or phase coherent receiver setup. Something like the KrakenSDR perhaps but simplified and limited to the 868MHz band.
Based around a STM32WLE low power LoRa module 868MHz and a couple LR44 button cells, should last six months or so per set of batteries. Total weight of the assembled unit is about 15 grams and has a range of atleast a few hundred meters.
Depending on if I want to take the project further over time I really want to refine the radio direction finding setup. I’ve been thinking hard about the possibility of building some kind of doppler or phase coherent receiver setup. Something like the KrakenSDR perhaps but simplified and limited to the 868MHz band.
[https://github.com/dpeckett/cat-tracker](https://github.com/dpeckett/cat-tracker)
Amazing. I have airtags on mines collars.
Awesome project!
Move over Sherlock Holmes, we’ve got a new detective in town! Cat Tracker Extraordinaire!
My sister is good to her cats. They actually come when she calls. I am mystified.
Splendid