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#ble.
Posts on the Alpisto engineering blog filed under #ble.
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- 01#flybeeper #fanet #ads-l
Teaching a LoRa vario to hear ADS-L — and finding the time to do it
Every ADS-L receiver takes its clock from GNSS. My vario has no GNSS by design — the position comes from the phone in your harness. So I took the UTC second from the phone too, over Bluetooth, and measured how bad that channel really is. Good enough with room to spare: the share of frames the device caught went from 15 % to between 50 and 100 %.
16 min read - 02#flybeeper #f1 #fanet
FlyBeeper F1: a Compact FANET-Capable Flight Instrument
A pocket-sized paragliding flight instrument with GNSS, barometer, 868 MHz LoRa FANET, BLE 5.0 and on-board logging. Built as both a FANET tracker and the main vario, with a long development log covering hardware, firmware, FAI-recognised IGC validation and a Web BLE configurator.
8 min read