BL Touch Installation what is Servo Pin?

@signpostman said in BL Touch Installation what is Servo Pin?:

@fcwilt I have tried CAT 5 cable and now I have 18 gauge 4 conductor that is not twisted pair

I would remove one twisted pair from the CAT cable and use that. And I would make sure to route it away from any source of noise, like stepper wiring.

Frederick

This might be your best bet. Short of a toolboard.

As a sanity check can you test the bltouch with a much shorter length of wire with the probe not mounted on the print head? Keep it vertical and trigger it by hand to see if it will stop the Z axis.

SignPostMan

@fcwilt Agree

SignPostMan

@phaedrux What other probe do you suggest that would work with a long cable?

Phaedrux

Maybe a good quality Normally Closed microswitch that you could manually mount before probing with some good quality shielded wire? Or a conductive touch plate that could be moved under the nozzle?

With a printer that size options may be limited?

With better wire the BLTouch may be viable as well.

fcwilt

@signpostman said in BL Touch Installation what is Servo Pin?:

@phaedrux What other probe do you suggest that would work with a long cable?

What sort of bed do you have? What is it made of. What sort of surface do you print on?

Thanks.

Frederick

SignPostMan

@fcwilt Right now I have a piece of corrugated plastic, so the probe does not get destroyed. I am going to have a aluminum with steel overlay when complete.

fcwilt

@signpostman said in BL Touch Installation what is Servo Pin?:

@fcwilt Right now I have a piece of corrugated plastic, so the probe does not get destroyed. I am going to have a aluminum with steel overlay when complete.

Will there be any magnets involved like you find in the Buildtak system?

Thanks.

Frederick

SignPostMan

@phaedrux I just shortened the cables and put new fittings on the end

SignPostMan

Still have exactly same issue.

fcwilt

@signpostman said in BL Touch Installation what is Servo Pin?:

Still have exactly same issue.

Do you have all 5 wires from the BLTouch connected to the board?

Thanks.

Frederick

SignPostMan

Yes Black and Brown connected to the same pin

SignPostMan

I might be crazy but I ordered a new BL Touch, see if it acts the same?

fcwilt

@signpostman said in BL Touch Installation what is Servo Pin?:

I might be crazy but I ordered a new BL Touch, see if it acts the same?

It's possible that you have a defective one.

It's also possible that the existing one needs adjustment. I've never had to do it but I understand there is some sort of adjustment that sometimes needs to be made.

Frederick

Phaedrux

@signpostman said in BL Touch Installation what is Servo Pin?:

Still have exactly same issue.

Can you explain that issue again? What exactly is it doing and what are you doing? Video?

SignPostMan

@phaedrux When homeall, or when G30, the Z axis lowers the BL Touch until it come into contact with the bed surface. the BL Touch once in contact with the bed, it retracts as it should. The Z axis keeps descending as the BL Touch trys to extend the probe again. It cannot extend so it errors and try's to drive the BL Touch through the Bed.