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This IGC logger is a simple logger that can be used to log a sailplane flight on an SD card. The logger has no display and is of a type switch-on and off after landing. The created IGC file will start logging as soon a "take off" is detected. This mechanism can be disabled too, so the logger will start logging as soon as it has a GPS fix.
Because the G-record is written as soon as enough B-records are recorded, the file is always "valid", even in the case of power loss.
The Lithium-Ion battery of 3000 mAh is large enough for very long flights.
- In the upper left corner is the LiPo charger (micro USB)
- Below that in the left hand side is the main Arduino ATmega2560-16AU PRO MINI board
- At the bottom the (large) 3000 mA Lithium-Ion battery
- In the right hand side on the bottom is the micro SD interface
- The 'dangling' component is the BMP280 air pressure sensor
- The other 'dangling' shrink wrapped component is a 3.7V -> 5V DC/DC step-up converter to power the Arduino board
- The GPS is a Beitian BN-880Q TTL GPS
- Hard to see in these photos, there's a LED to show the state of the logger
The whole prototype fits in a box with dimensions 100 x 60 x 25 mm and weighs aprox. 130 gram.
I typically fire up the box before the flight, wait until the LED shows it has a valid GPS lock, place it in the side pocket in the cockpit, and go fly. After landing switch if off. The latest flight is stored in a date stamped folder and unique IGC file on the SD card for upload to Weglide or the OLC.