LoRa Asset Tracker
Solar-powered LoRaWAN tracker for cargo containers crossing continents.
- Stack
- STM32WL · LoRaWAN 1.0.4 · GPS · BMS
- Role
- Schematic, PCB, firmware
- Outcome
- Field-tested across Asia-EU rail routes. 18-month maintenance-free.
Challenge
The brief.
Reliable connectivity across 90+ LoRaWAN regional plans, with a solar+supercap power system that survives 30 days of darkness.
Approach
How we built it.
Single-chip STM32WL design. ML-based motion classification to skip uplinks when stationary. Custom BMS with super-cap conditioning.
Result
What shipped.
98.4% uplink success rate across 5 carriers. <2 W·h/day average consumption.
More work
Other recent case studies.
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