Shared Projects by DonBindner

Diminutive FM “fox” transmitter capable of up to 100 mW of output power.

Bill of materials: http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=0a724f6ca0

Kicad drawings and MSP430 source code: http://dbindner.freeshell.org/kicad/MidMorseBeacon2/

Source code was written for gcc-msp430 compiler and mspdebug on Debian/Ubuntu.

You’ll need an MSP430 Launchpad card for programming. Available for $9.99 from Texas Instruments. https://store.ti.com/MSP-EXP430G2.aspx

A dead simple “throwie” style blinker for balloon flights.

A very low power 10 to 20mW beacon for radio direction finding. A bill of materials is available at:

http://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=06ba8c9ddb

Schematic: http://dbindner.freeshell.org/kicad/TinyMorseBeacon.pdf

Kicad files are at: http://dbindner.freeshell.org/kicad/TinyMorseBeacon/

Gerber files are at: http://dbindner.freeshell.org/kicad/TinyMorseBeacon/gerbers/

Source code for the MSP430 microcontroller that runs the show: http://dbindner.freeshell.org/kicad/TinyMorseBeacon/msp430/

Important You must put your own amateur radio call in the file encoder.py before you build the program.

Plugs into balloon radio card to provide a transmitter. (This version with resistors in the PTT and Enable lines).

Decodes APRS audio from your radio and sends it via bluetooth to your phone or laptop. Requires an Inland Arduino Mini Pro, and an HC-05 bluetooth card.