Bltouch not deploy sometines it does
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@Tinchus I have an extra observation. while trying to separate the BL cable from the resto fo the cables, electronics were off, I moved the printhead by hand and the red led of the bl touch turned on, is that ok?
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@Tinchus said in Bltouch not deploy sometines it does:
@Tinchus I have an extra observation. while trying to separate the BL cable from the resto fo the cables, electronics were off, I moved the printhead by hand and the red led of the bl touch turned on, is that ok?
When you move the motors by hand they behave like generators putting a voltage back into the system which will illuminate LEDs etc. If you move them fast enough you can generate enough voltage to damage the drivers, etc.
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@Tinchus said in Bltouch not deploy sometines it does:
If I push pin up with fingers, DWC never sees the BL activation (zprobe value is always cero). If I issue an M402 pins goes up, then M401 deploys the pin and if I try to trigger it, pin is trigger but DWC nevers sees that, probe value is always cero.
The pin is magnetic, so if you force it up it's going to stay put magnetically, but that's not to say it's the same as triggering. It's best not to touch the pin at all as it's very fragile. And only control it with the proper M401 and M402 commands so that the state of the pin can be accurately tracked by the firmware.
As for the cabling, please try the setup I suggested. If the short leads of the BLtouch itself aren't long enough, try making a short extension harness. The idea is to see if the issue is cable interference or if the BLtouch itself is malfunctioning.
For what it's worth, I run several wires through my harness 1.5 meters to the print head including the heater, PT100, two fans, and BLTouch. All the cables are individually twisted or braided though to limit interference.
