Unknown Value for R1 resistor

[karlmueller]

There are resistor values in the BOM for all resistors except for R1. The resistor in question is located next to a STEP callout and is circled in the enclosed CAD rendering. Please update the BOM to include this resistor value.

[chilipeppr]

There is no resistor needed there. That is a 0 ohm resistor, meaning it's a wire, and the wire is actually connected in the Eagle BRD file so you don't need to do anything there.

The point of that 0 ohm resistor is that the ESP32 is supposed to be able to do internal loopbacks inside the chip itself so that you can send PWM out one GPIO and do a pulsecnt on another GPIO. However, I was never able to get that to work via the code so I just did it via the external wiring to loop back the signal. If I figured it out eventually in the software, I wanted to have a way to cut the wire and possibly re-solder if I needed to.