Curious about the 1.5k resistor too? I don’t know enough to have an opinion, am genuinely curious after seeing 1k in some board designs and the DataSheet. Tried asking AI for ideas/reasons why non 1k resistor would be used… ChatGPT - UART Resistor Value Guide
Am asking after stumbling across git/Boards/Schematic_Five-Motor-Control-Board.svg while I’m learning how to drive couple of steppers for a pet project I’m goofing around with. Am learning by digging around schematics of misc projects I like. fwiw, am skimming through TMC2209 datasheet (which only shows 1k between TXD and RXD)…
Cheers!