How we messed everything up but still got LoRa to the stratosphere
summary
Built custom PCBs with GPS, LoRa radio, GSM modem, logging and a beacon, plus servers, APIs and an Android SMS gateway to track a helium balloon payload; launch pierces the balloon and gets patched with duct tape, GPS freezes above 10,000 m so barometer shows ~20,600 meters, LoRa works as LoRa point-to-point line-of-sight while GSM provides GSM SMS fallback on descent, camera files corrupt but payload is recovered from a swamp and the system mostly functions.
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chapters (8)
- 0:00Start
- 1:274 years later
- 2:11Introducing Munin
- 2:47Mission control
- 5:15Final preparations
- 5:48We messed up
- 6:56Tracking it
- 8:28What we dreamed about
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