4 ms·
> Any trackers will be quickly rendered useless once they're in the van You can build a custom LoRa based tracker with 100+km range (line of sight), a van won'
by 05 5y ago
> Any trackers will be quickly rendered useless once they're in the van
You can build a custom LoRa based tracker with 100+km range (line of sight), a van won't disable that. You'll have to use signal triangulation, though, because GPS reception in a van won't be great.
- l8rlump 5y agoAny recommended further reading on the LoRa solution?
- 05 5y agoThe easiest way to implement that would be using a Crossfire Diversity Nano receiver [1] with a backup battery. It supports GPS out of the box, directly connectable to the receiver. For a custom solution, ExpressLRS [2] is an open source system that can be flashed to FrSky R9mm receivers that you can hack on to add features you want. Or buy Semtech [3] and ESP32 modules and build your own hardware to maximize transmit power (standard hobby receivers only have 25-40mW telemetry) PS. TTGO LORA32 modules [4] already have ESP32 and Semtech module assembled, only need flashing (again, lower power than a dedicated 30dbm module) [1] https://www.team-blacksheep.com/products/prod:xf_nano_div_rx https://www.team-blacksheep.com/products/prod:xf_nano_div_rx [2] https://github.com/ExpressLRS/ExpressLRS https://github.com/ExpressLRS/ExpressLRS [3] https://www.aliexpress.com/item/1005002116232826.html https://www.aliexpress.com/item/1005002116232826.html [4] https://www.aliexpress.com/item/4000010599226.html https://www.aliexpress.com/item/4000010599226.html
- l8rlump 5y agoThankyou! I've been having fun with ToWL[1] but this might be the next step. [1] http://www.phreakmonkey.com/2016/08/towl-telemetry-over-opportunistic-wifi.html http://www.phreakmonkey.com/2016/08/towl-telemetry-over-oppo...
- ac29 5y agoYou need elevation to get line of sight at 100km+. On flat ground, the curvature of the earth will block your signal.