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Apologies for the delayed response. It has been a busy week. With regard to your photos, I think your breadboard set up is OK. The white wire and red wires go to the sides of the paddle (I’m guessing) and the black wire to ground.
Regardless of firmware, when you key the different sides of the paddle you should measure a different voltage drop across the 2.2k or 10k resistor. Matthias’ suggestion about the 10k pot would be interesting to try.
Swap the jack see if it helps! Other than that maybe there’s a goof on the board? What does the bottom of that PCB look like? Maybe something weird is going on w/ the ground trace on the PCB.
I saw another post recently about some keyer issues with the latest firmware. Might be worth looking into.
On Thu, Aug 30, 2018 at 03:02 Matthias Zwoch <zwoch@...> wrote:
Am 30.08.2018 um 02:37 schrieb escalantea@...:
Adam Goler, PhD
Cell: (425) 985-8700
"Fear is the mind killer."