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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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docs/BLTouch.md
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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 If the above is looking good, it's time to test that the probe
responds to commands from the firmware. First run `BLTOUCH_DEBUG responds to commands from the firmware. First run `BLTOUCH_DEBUG
COMMAND=pin_down` in your printer terminal. Verify that the pin moves 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 wiring and configuration again. Next issue a `BLTOUCH_DEBUG
COMMAND=pin_up`, verify that the pin moves up, and that the red light 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. 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. COMMAND=pin_up` and verify that the pin moves up.
After completing the BL-Touch command and sensor tests, it is now time 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 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 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 the toolhead far from the bed, issue a `G28` (or `PROBE` if not using
down, and stop the movement by very gently touching the pin with your probe:z_virtual_endstop), wait until the toolhead starts to move down,
nail. You probably have to do it twice, since the default and stop the movement by very gently touching the pin with your nail.
configuration makes it probe twice. But be prepared to turn off the You may have to do it twice, since the default homing configuration
printer, to avoid damage, if it doesn't stop when you touch the pin. 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 If that was successful, do another `G28` (or `PROBE`) but this time
the bed as it should. let it touch the bed as it should.
BL-Touch gone bad BL-Touch gone bad
================= =================