Geeetech

sevensad wrote:Hi ,

I read all the thread but did not fine any answer to my problem.

When i start the Printer, the 3Dtouch only make 2 movements , not 3.
and i m unable to make it up/down/ selftest with G commands.

nothing happens (just the 2 movements at the start of the printer.)

Do anyone have an idea?

Check your firmware and wiring,maybe you can post more details about your 3D touch(the firmware and the wiring)?

Two movements==normal. Mine only moves twice on start up.

Do you use any commands like in this other thread on this page: https://www.geeetech.com/forum/viewtopi ... 1&start=20

Hi,

Thanks for your reply.
I checked the wiring. To be sure, i soldered each wire and verified the continuity with a multimeter. this point is OK.

the firmware is the one of this topic. first page: Marlin-PI3_Pro_B_3DTouch.zip

i tried the G command. Nothing happens. The red light is always on.

M commands make the 3D touch work.

Sorry, i mean M command and not G : M280 P0 S10 etc..
no movements.

Any idea? is it possible to check the sensor another way. or check that the board is ok?

If the sensor is connected correctly and you get no response from sending self test command(or any) it is likely not properly activated in firmware.

Try lowering the pin--turn screw clockwise--until the light goes off. Raise it (anti-clockwise) a bit and try the commands.

The light should be on until M280 P0 S10 which turns off the light and extends the pin.

@Undcon: i gonna check again the firmware and all steps (it just will be the 20st time i do it! )
@daveapplemotors: it should light on when lowering? because , in my case, it s light on, when pin is up (in contact) , and off when pin is down.
nevertheless, it tried what you suggested.. nothing.

It sounds like it might be working just right.
My red LED off when pin is out / extended / down towards bed.
Red LED on when pin is retracted / pulled up into 3D touch sensor.

The pin is out and light off when the nozzle descends toward the middle of the bed - M280 P0 S10 before G28 & G29.

Do you have safe homing enabled?

Ok, i assume sensor would be ok.

Safe Homing:

I guess yes . in the firmware. configuration.h:

//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
//it is highly recommended you let this Z_SAFE_HOMING enabled!!!

#define Z_SAFE_HOMING

it seems enabled. should not be?