TeleMini Dual-deploy altimeter with telemetry now available

TeleMini is a miniature dual-deploy flight computer with data logging and radio telemetry. Small enough to fit comfortably in an 18mm tube, this powerful package does everything you need on a single board:

  • 5kB on-board data logging memory.

  • 70cm ham-band digital transceiver for in-flight telemetry and on-the-ground configuration.

  • Transmitted telemetry includes altitude, speed, acceleration, flight state, igniter continutity, temperature and battery voltage. Monitor the state of the rocket before, during and after flight.

  • Radio direction finding beacon transmitted during and after flight. This beacon can be received with a regular 70cm Amateur radio receiver.

  • Barometer accurate to 45k' MSL. Reliable apogee detection, independent of flight path. Barometric data recorded on-board during flight.

  • Dual-deploy with adjustable apogee delay and main altitude. Fires standard e-matches and Q2G2 igniters.

  • 0.5” x 1.5”. Fits easily in an 18mm tube.

  • Uses rechargeable Lithium Polymer battery technology. All-day power in a small and light-weight package.

  • Learn more at

I don't have anything in these images to show just how tiny this board is—but the spacing between the screw terminals is 2.54mm (0.1in), and the whole board is only 13mm wide (1/2in).

We've been flying these for quite a while; testing the hardware and tuning the firmware. My new 29mm mmt airframe, Koala, sports a TeleMini board for apogee-only deployment. It's been really nice to have something flying on G's and H's that doesn't depend on the vagaries of delay grains.