@Phaedrux Turns out, I am just really bad at math and gear ratios. The Z-axis is moved with some gears and belts, and I dramatically miscalculated the number of steps per mm for the z axis. I still need to figure out the math exactly, but once I increased it from 5 to around 200, it is working correctly.
Thank you for your help, and sorry for wasting your time...

@Phaedrux Thanks! Once it is up and working, I plan on doing a detailed write up with a fair number of pictures.

@Phaedrux Thanks! Once it is up and working, I plan on doing a detailed write up with a fair number of pictures.

@Phaedrux Yes, it is! It's being converted from an old piece of lab equipment that didn't work anymore.

@Phaedrux Turns out, I am just really bad at math and gear ratios. The Z-axis is moved with some gears and belts, and I dramatically miscalculated the number of steps per mm for the z axis. I still need to figure out the math exactly, but once I increased it from 5 to around 200, it is working correctly.
Thank you for your help, and sorry for wasting your time...

@Phaedrux Sorry I was unclear. This is my printer: https://imgur.com/a/YOc4DmV. So the head moves up and down on the arm.

@Phaedrux I made a change to it to move the head to the middle. The now head moves to the middle, deploys the probe, and then nothing happens. After a while, the probe gets retracted.

I am sure its just that I have no idea what I am doing. The Z-axis of my printer is like it would be on a gantry robot, I am guessing that I didn't configure it correctly, but I don't know what I did wrong.

@dc42 retractprobe.g; homez.g; deployprobe.g; config.g

@Phaedrux

When I click Home Z, the probe deploys but doesnt retract, and the printer gets stuck on the Z Home command for a while.

M401 and M402 do work like they should.

I am not sure what the servo control gcode is. I may be in a little over my head with this project....

When power is first applied, the BLTouch lights up red, and then deploys and retracts twice. After that, the BLTouch stays lit up solid red.

@Phaedrux said in I need help with setting up a BLTouch:

M558 P9 C"^zprobe.in" H5 F120 T4000 ; BLTouch connected to Z probe IN pin
M950 S0 C"exp.heater3" ; create servo/gpio 0 on heater 3 pin on expansion connector

I do have RRF3. I tried putting this in and when I click home z, the probe deploys but doesnt retract, and nothing else happens.

Thank you for your help, I really appreciate it.

As it turns out, as a beginner to all of this, I have no idea what I am doing, and need some help setting up a BLTouch (v3.1) on my duet 2 ethernet.

I used the reprap configurator and also tried using the betrue guide but havent had much success. Any help would be greatly appreciated. I have uploaded .txt versions of various .g files. retractprobe g; homez g; deployprobe g ;config g

The wires are plugged in as follows:
Red - Expansion 1) +5V;
Brown - Expansion 2) GND
Orange - Expansion 8 ) Heater 3
Black - Z probe GND
White - Z_probe_In

I want the BLTouch to be the Z-endstop and for checking the level of the bed. I have a Cartesian printer.

@littlehobbyshop @deckingman I actually was toying (briefly) with the idea of just using one. There would be a pivot point, and then one stepper that when turned counter clockwise would raise one corner, and then clockwise would raise the other corner. When the corner would raise too much, it would fall to a point lower than the level of the pivot point. I quickly decided against this because it seems like way more effort than it would be worth.