Description
A minimalistic version of Digirig with the same audio code as regular model of the interface but without serial port.
- combines audio codec and PTT switch
- supports PTT by GPIO3 of CM108 audio codec
- supports VOX PTT by the tone on the unused right channel (experimental)
- works with all major OS flavors: Windows, MacOS and Linux
- uses a single TRRS connector compatible with existing Digirig audio cables
- growing collection of pre-made cables including popular Icom, Yaesu, Elecraft, Baofeng, Xiegu transceivers
- isolation can be easily added using inexpensive USB isolator dongle
Discussion and software configuration examples can be found in this thread.
Change log:
1.0 – Initial release, PTT by GPIO confirmed working by multiple testers with a range of apps. PTT by tone circuitry found to be not robust and therefore disconnected.
1.1 – Reduced current limiting resistor in PTT line to accommodate existing Digirig cables with resistors already in them. Improved PTT by tone on the right channel – now works with a range of software and apps, but considered experimental at this point.
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