BLTouch Smart v1.3 Not Working

[CircuitGuy]

I have a v1.0 Trigorilla board on an Anycubic i3 Mega. TMC steppers (not relevant to this).

Wired everything up correctly (triple-checked!) for BLTouch v1.3.

The probe self-test passes, but when the probe triggers against the bed, Marlin takes no action.

What I've tried:

1. Check wiring. Twice.
2. In Configuratoin_adv.h uncommented the #define BLTOUCH_SET_5V_MODE, and build with the MEGA_S_TMC_BLT_10 PlatformIO config.

Once I set 5V mode, the BLTouch won't extend pins under manual control. Feel like maybe I'm making a noob mistake...

After a lot of googling, I did find an identical issue in one of the davidramiro forks. One commenter specifically mentioned this repo as having the same issue. https://github.com/MNieddu91/Marlin-Ai3M-2.0.x-BLTouch/issues/3

Any thoughts or troubleshooting ideas?

[agentchimendez]

Mine ended up being a wiring issue. I’m really bad at soldering and I’m new to multimeters. What finally clued me in was a continuity test with the tone.

Turned out I had the white wire connected but not the black I believe. Rather than attempting to solder again I skipped the board and spliced directly into the bundle of wires above the green clip connector.

[CircuitGuy]

@agentchimendez Thanks. I continuity checked everything just now. Still not working.

This thing gets really hot just sitting there, not even with the sensor wire plugged in, just 5.03 V and the servo connection. It works at first, i.e. will pass the power-on test and respond to probe commands. If I let it self-heat for too long, eventually it stops responding to the servo commands around 80 *C according to my thermal camera. Looks like it's damaged. Going to assume it's my fault somehow. :( Probably buying a clone and trying again.

[github-actions[bot]]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.