Bdale Garbee and Keith Packard are developing a solid-looking open source telemetry system, that they call TeleMetrum. They have a production version available in their shop, and the board design and firmware available for download. It’s got some impressive specs:
- Recording altimeter for model rocketry
- Supports dual deployment (can fire 2 ejection charges)
- 70cm ham-band transceiver for telemetry downlink
- Barometric pressure sensor good to 45k feet MSL
- 1-axis high-g accelerometer for motor characterization
- On-board, integrated GPS receiver
- On-board non-volatile memory for flight data storage
- USB for power, configuration, and data recovery
- Integrated support for LiPo rechargeable batteries
- Uses LiPo to fire e-matches, optional support for separate pyro battery
- 2.75 x 1 inch board designed to fit inside 29mm airframe coupler tube
[via antitronics]
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