BL 3d Touch Probe resetting

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Neil PC
Posts: 6
Joined: Wed Feb 10, 2021 8:19 pm

BL 3d Touch Probe resetting

Post by Neil PC » Wed Feb 17, 2021 11:58 pm

I am a newbie to the forum and 3d Printing.
I have just bought an A20T and a BL 3d touch probe, after going through the forum I managed to update Hex firmware using Cura.
so i am now running

Marlin: 1.1.8

HW Ver: GT2560 V4.1

FW Ver: 2.3

I have manually leveled the bed and installed BL Touch, however the video on Geeetech is different to what i am seeing, but i can understand the gist of it.
my problem is when i go to setup gap, my extruder is about 2.55mm from bed and Z offset is -.50.
i have tried using various figures for offset and everytime i try bed level my touch checks middle of bed, then goes to front corner.
The extruder lowers, but the probe does not extend again and it hits my bed.

I can reset touch and it follows the deploy/stow commands on LCD also
M280 P0 S10 ; pushes the pin down
M280 P0 S90 ; pulls the pin up
continously whilst i am entering the commands

but then on next use it does not deploy again.

i dont know how to get into firmware to change anything but i have managed with the G code commands.

please help i have had my printer a week now and still setting up, not even loaded filament yet and it looks like it may take flying lessons very soon.

Thank you


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