BLTouch not working
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@hsverre said in BLTouch not working:
connected the bltouch directly on the bord. But, with the same result.
Have you tried connecting this BLtouch to one of your other printers? Perhaps the BLTouch itself isn't working.
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@phaedrux said in BLTouch not working:
@hsverre said in BLTouch not working:
connected the bltouch directly on the bord. But, with the same result.
Have you tried connecting this BLtouch to one of your other printers? Perhaps the BLTouch itself isn't working.
I have don that some days ago. I will try again just to make shure thats not the problem.
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@phaedrux Could it be an option to reflash the os from scratch?
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@hsverre said in BLTouch not working:
@phaedrux Could it be an option to reflash the os from scratch?
I don't think it's going to make a difference.
The easy way to test the BLtouch is to connect 5v and ground and see if it lights up and tests the pin.
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@phaedrux said in BLTouch not working:
The easy way to test the BLtouch is to connect 5v and ground and see if it lights up and tests the pin.
Thats the black and white wire?
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No. On a genuine BLTouch 5v is red and ground is black/brown.
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Are you refering to the brown on the PWM or the black on the Probe?
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The red and black/blue show 0 Volt
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@hsverre
Doesn't matter but disconnect the probe from the board..... -
I did that and the red and brown pin show 0 volt
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No one of the PWM ports gives 5 V, all of them show 0 V.
And both the BLTOuches works fine on another printer. So they are ok.
There has to be something wrong with the power on the PWM pins
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@hsverre
There is a jumper on the duex for the use of an external 5v supply.
Have you checked that?
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@diy-o-sphere
I have played a bit back and forth with that pin. When in the position the schem show the PWM pins gives 2.658 V -
@hsverre
Set the jumper that way.(UTC+1)
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BTW Do I need an external powersupply for the Duex other than the 12 V?
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@hsverre
Only with big 5v fans....Edit:
To be exact larger consumers like LEDs, rc servos...... in total more than 1A on the 5v line. -
@diy-o-sphere said in BLTouch not working:
@hsverre
Only with big 5v fans....I dont have any 5 V fan
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@diy-o-sphere said in BLTouch not working:
@hsverre
Set the jumper that way.Now i have set the jumper that way and 2.6 V (half of 5?) at thw PWM
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@hsverre
You cannot measure this exactly with a voltmeter. But it could be plausible for an end position. It's been a few years since I've measured that too.....I would give it a try.
