It might be worth documenting all of the output functions and performance vs. operator input in both the command and conventional environments and then doing so for all the identifiable hardware and firmware revs of these boards over the years.
There are more outputs these devices have other than the simple outputs in the OP. There is the PWM output and then there is also the serial comm output for instance. Also I remember the early R2LCs had a speed triggered smoke boost feature that disappeared at some point (maybe still there but I haven’t checked in years).
It might be neat to identify a test point to measure the signal strength into the receiver for the dreaded ‘weak signal/blinky headlight syndrome’ so one may change be able to swap a failing/underperforming/out of tolerance component to restore full robust response.
