docs: Update BLTouch.md initial tests for users with a regular z endstop

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2020-04-02 10:36:03 -04:00
parent 5d0658b91b
commit b2a29c6349
1 changed files with 11 additions and 10 deletions

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@ -51,7 +51,7 @@ off the printer and check the wiring and configuration.
If the above is looking good, it's time to test that the probe
responds to commands from the firmware. First run `BLTOUCH_DEBUG
COMMAND=pin_down` in your printer terminal. Verify that the pin moves
down, and that the red LED on the probe turns off. If not, check your
down and that the red LED on the probe turns off. If not, check your
wiring and configuration again. Next issue a `BLTOUCH_DEBUG
COMMAND=pin_up`, verify that the pin moves up, and that the red light
turns on again. If it's flashing then there's some problem.
@ -67,16 +67,17 @@ configuration again. At the completion of this test run `BLTOUCH_DEBUG
COMMAND=pin_up` and verify that the pin moves up.
After completing the BL-Touch command and sensor tests, it is now time
to test homing, but with a twist. Instead of letting the probe pin
touch the print bed, let it touch the nail on your finger. Position
the head far from the bed, issue a `G28`, wait until it starts to move
down, and stop the movement by very gently touching the pin with your
nail. You probably have to do it twice, since the default
configuration makes it probe twice. But be prepared to turn off the
printer, to avoid damage, if it doesn't stop when you touch the pin.
to test probing, but with a twist. Instead of letting the probe pin
touch the print bed, let it touch the nail on your finger. Position
the toolhead far from the bed, issue a `G28` (or `PROBE` if not using
probe:z_virtual_endstop), wait until the toolhead starts to move down,
and stop the movement by very gently touching the pin with your nail.
You may have to do it twice, since the default homing configuration
probes twice. Be prepared to turn off the printer, to avoid damage, if
it doesn't stop when you touch the pin.
If that was successful, do another `G28` but this time let it touch
the bed as it should.
If that was successful, do another `G28` (or `PROBE`) but this time
let it touch the bed as it should.
BL-Touch gone bad
=================