Enabling the hardware to talk to logging software like N1MM or Ham Radio Deluxe. Impact on Amateur Radio
The firmware reads this voltage to set words-per-minute (WPM) from about 5 to 50+. k3ng keyer schematic
Connect a 10k linear pot to an Analog pin (usually A0) to adjust WPM (Words Per Minute) on the fly. Enabling the hardware to talk to logging software