GRBL port, electrochemistry… this PSoC sure starts looks interesting. Same deal as ex after few bottles.
One CHIP? I spot several… anyway, good build other than the HORRENDOUS hackaday.io completely useless interface (once again: compare with instructables and learn how to set-up things).
Click rate is what matter, not user convenience or clarity. 14k won’t do itself.
There is a programmer on the board.
The chip on the small section on the right is the onboard programming/debug tool. You can snap off that part of the board if you want.
Or you could use the Analog Devices ADuCM355 with two pstats and a frequency response analyser (Impedance measurement) on a chip.