Reprogramming a €15 USB Audio Dial to work as an SDR VFO Knob
Reprogramming a €15 USB Audio Dial to work as an SDR VFO Knob by RTL-SDR.com
https://www.rtl-sdr.com/reprogramming-a-e15-usb-audio-dial-to-work-as-an-sdr-vfo-knob/ (sourced and republished from RSS feeds)
Thank you to Tysonpower (aka Manuel DO5TY) for submitting information about how he’s managed to convert a cheap €14.33 USB audio control dial into a VFO tuning knob for use in SDR programs like SDR-Console V3. He writes:
I sometimes miss a VFO Knob while using my SDRs, especially with SSB Signals or CW where you need to adjust the Frequency very fine.
Because of that I got myself an Audio Dial with USB, reverse engineered it somewhat and wrote a new Firmware for the STM32 used in the USB Dial.
It all worked out and it now simulates a mouse wheel with three different scroll speeds. There is also a Mute Function when you long press the Button.