This is a very small, baro-only recording dual-deploy altimeter for model rocketry with integrated telemetry link.

Production units are available from the Garbee and Garbee web store. TeleMini starter kits are also available from Apogee Components.

For the latest TeleMini firmware and related ground station software, please visit the AltOS page on this site.

These are photos of our current production version:


User View

  • 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
  • Designed to use a single LiPo rechargeable battery
  • 1.5 x 0.5 inch board designed to fit inside 18mm airframe coupler tube

Developer View

  • Hardware Features
    • TI CC1111F32 Low Power RF System-on-Chip
      • Sub-1Ghz transceiver
      • 8051 MCU
      • 32k Flash
      • 4k RAM
      • USB 2.0
      • 6 12-bit analog inputs (11 bits with single-ended sensors)
      • 2 channels of serial I/O
      • digital I/O
    • Freescale MP3H6115A pressure sensor
  • Software Features
    • Written mostly in C with some 8051 assembler
    • Runs from on-chip flash, uses on-chip RAM, stores flight data to upper blocks of on-chip flash
  • Tools Used
    • gEDA for schematic capture and PCB layout
    • SDCC compiler and source debugger
  • Licenses


There is a single manual for TeleMini and all other Altus Metrum products, which is available in html and pdf formats.

An outline of the board with drill hole locations is available in pdf format.

The hardware design files can be found on in the project hw/telemini.

For those who don't have ready access to the gEDA suite, here are pdf snapshots of the files for Production PCB version 1.0 in more easily readable form.