BLtouch dosent working

[iam99pk]

Hi, i cant figure out whats wrong whit my BLtouch..

i have tryed dirfferent thing, i can take the pin out and in, i can self test it, it elv test when the printer is powering on, the alarm can go but it wont trigger "z-probe"..

0_1555951187085_config.g

this is only a test to try the probe.. it dident work in the printer so took the board out to try thing out easy..

i have mesure the signal between black and white cabel, and when i trigger the probe it only shows 0,1-0,17v, normaly aroudn 0,155-0,16v when it goes in to alarm it gives 4,8v and then the "Z-probe" goes to "1000"

i have also try 2 differents bltouch..

[Veti]

i can only see 1 fuse.
is that a v1.03?

if so stop testing and hope that you did not damage the board.

the bltouch has to be converted to 3.3v operation.
see https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe

[iam99pk]

Hmm.. I have tryed that to, but i get 4.8v after cutting the thing.. Rest of the board works fine thoe.. But gona look at it later.

[Veti]

the bltouch uses a hall probe. it will trigger only for a very short amount of time. you will most likely miss it.

[Phaedrux]

G31 P0.1 is too low. Try G31 P25.

M558 F500 is pretty fast for BlTouch probing. Try F100

Also see these

https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_BLTouch
https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe
https://duet3d.dozuki.com/Wiki/BLTouch_Troubleshooting

[iam99pk]

@phaedrux yeah te 0.1 was Just a test, i had it on 25..

[iam99pk]

@veti so madeby the multimeter dosent se the trigger then and only shows 0.150v

[Phaedrux]

If you do the dynamic test procedure from the test and calibrate z probe link, does it stop the z motors from turning? The Z Probe status in the DWC will only flash to 1000 very briefly so it can be very hard to notice and may not always show as changing at all.

[dc42]

Is it a version 3 BLTouch? They changed the output circuit in that version.

[iam99pk]

@phaedrux well i feel like an idiot now xD it did work on my "test bench" now...

gona try it in the printer now an see if it work

[Phaedrux]

Just have your hand near the power switch so you can kill the power if triggering the probe doesn't stop the motion.

[iam99pk]

@phaedrux looks like G30 worked fine now. gona mount the Bltoch now and try more tomorrow