Description
When building a single-encoder CTR2-Dial using your own M5Dial you can add a 3.5mm CW paddle jack for remote CW keyer control if your control app supports it. This interface includes the 3.5mm stereo jack and a PCB with the voltage divider circuits to reduce the 5 volts supplied by the M5Dial down to 3.3 volts for the input pins on Port B of the M5Dial.
You can build your own paddle interface using the schematics found here.
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