So over the last couple weeks, I’ve been working on a new project to develop a low cost, low power, but feature rich duplex repeater controller suitable for setting up a temporary / emergency repeater systems with radios that can be run on portable power. This is all going to be based on the Raspberry Pi. I’ve been coding and testing the backend in virtual environment. Here are some updates on the project including a link to the project page, some screen shots, and my projected development path.

Web Interface

Screen Shot 2014-01-21 at 8.24.02 PM Screen Shot 2014-01-21 at 8.24.49 PM

Projected Development Path
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  • [DONE] Research: Look into feasibility of the project. Look for other real world projects utilizing the technologies on the Raspberry Pi that I will require for my setup. Technologies such as LAMP (Linux-Apache-MySQL-PHP) used for the web based interface to configure the repeater controller and speech synthesis and audio playback for voice and CW identification/notices and courtesy tones.
  • [MOSTLY DONE] Virtualized Development: Created a virtual machine running Debian with minimal system resources to begin coding Python program for repeater controls, integrate technologies for voice ID, CW ID, and courtesy tone playback. Configure LAMP server for UI control and configuration storage. Start documentation.
  • Begin Raspberry Pi Testing: Move same configuration on virtual machine on to an actual Raspberry Pi and start refining and testing code with basic GPIO inputs and outputs.
  • Circuit Design: Start designing and refining circuitry for radio interfacing and make prototype board.
  • Further Design and Programing Refinements
  • Work towards low number production run
  • Marketing and Future Direction Evaluation and Planning