I haven't sniffed that one since I didn't expect much to change.įirst, does the Arduino typically auto-baud, or should I expect a fixed rate? Also, is there flow control available on the USB/Serial connection? Any ideas what I should look for to get past my wall? I've also tried UGS, and there's no improvement. At one point, I was seeing a "?" being sent with a string returning that looked like the coordinates status. Hitting any of the motion buttons does nothing, even though they are highlighted (and the status shows "connected"). Right after connecting, the outbound stream sends an 0x18, and it gets back "Grpl v0.9 ($ for help)". I've got a Serial Port monitor attached, and it looks like 115K at least does something, although it looks like there might be some speed issues since the recorded data is often misspelled. ![]() I've tried 9600 and 115K (setting the rate in both the device manager and the GrplControl program, and neither does more than crash. ![]() I've installed the CH340 driver and tried several programs to talk to the silly thing. I bought one of those cheap $159 CNC machines, and the mechanical assembly went fine (I'm a hardware engineer, after all), but I'm stymied at that point. Second, I've retired out of tinkering, but I was a PIC guy, not an Arduino guy, so my brain is used to other things. First, I apologize for posting a "project" issue.
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