liba2k

Before:  After: 

1. Yes, I did use a micro-USB cable and just cut off the USB-A side. 2. Yes, +5v unconnected and GND to the dev board GND. 3. I think so,...

I've checked, and while my setup is noisy, you can see from the measurement the time between bursts on my caliper is 135ms (see BX-AX). Are you sure you are...

While trying to get better wave screenshots for you, I noticed something that might be your problem. The GND from the caliper is the USB cable shielding, not the black...

Sorry, the adafruit micro usb breakout already connects the lines  If you have a multimeter, please use in on continuity mode (the one that beeps when the two probes...

You should not have continuity between D+/D- and the body of the caliper. I've measured the resistance between D+/D- and the body and it shows up as open circuit. If...

No, you should not see continuity between D+/D- and GND when the caliper is transmitting. Please try another cable and/or another caliper. Or use a cut micro USB cable to...

Great to see that you got it work. I was never sure about the D+/D- since I've used the scope to identify them.