3dtouch problem

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spot
Posts: 1
Joined: Wed Dec 19, 2018 1:07 am

3dtouch problem

Post by spot » Wed Dec 19, 2018 2:24 am

so.. i have installed 3dtouch on my creality ender 3 with th3d marlin firmware

initial test goes apparently well. probe gets stowed/deployed couple of times, light stays steady lit red.

M280 P0 S120 test is working well too.

M280 P0 S90 retracts probe as expected. the light lits red as well.

M280 P0 S10 extends the probe as expected. light turns off (no blue light, thats normal for 3dtouch right?)

at this point M119 reports:

Code: Select all

Send: M119
Recv: Reporting endstop status
Recv: x_min: open
Recv: y_min: open
Recv: z_min: open
Recv: ok
with my finger i ever so gently touch the tip of the probe. it immediately retracts and and then drops right back down. at this point if i remove my finger, the probe freely drops down, z_min stays open, 3dtouch light stays off.

if, however, i keep finger in touching distance, the probe drops down, can't fully extend (by one-two mm at most) and goes into blinking mode. M119 reports as follows:

Code: Select all

Send: M119
Recv: Reporting endstop status
Recv: x_min: open
Recv: y_min: open
Recv: z_min: TRIGGERED
Recv: ok
at this point LCD indicates that the printer has been "STOPPED".

during actual z-axis homing what happens is, as soon as extended probe touches the plate it retracts, then immediately drops down, all while moving downward, on second attempt (presumably) the firmware detects something fishy and stops the printer. depending how low 3dtouch is mounted it may or may not result in a hit of the nozzle against print plate.

i hope this is enough info for someone to help me diagnose the issue here.

thanks in advance!

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