Posts made by BismuthBlues

@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.

I know it is possible to use 3 steppers to level your bed as part of the z axis, but I am wondering if it is possible to set up a bed with two motors being used for leveling and then a third motor being used for the z-axis (the z-axis is on the print head with the bed staying in relatively the same spot)? Is this do-able?

@dc42 Thank you for your continued help on all of this. After doing some reading of the temperature controllers manual, I have found that I can configure it to be controlled either via EIA/TIA-232 or EIA/TIA-485. The controller also supports three different communications protocols; Modbus RTU, Anafaze (which I am assuming is the manufacturer's protocol) and Allen Bradley.

I am pretty new to all of this so I am not really sure what the easiest way to go about things is, so any help is greatly appreciated.

For the time being, I am using the controllers interface, but ideally, I would like to control the temperatures though the Duet.

Thank you again for your help

@dc42 aside from the converter, what would the easiest way to do this be? Would the expansion header breakout board be useful?

Thank you for your help!

I have an external temperature controller (a Watlow Anafaze mls300) that I want to use for a 3D printer that I am building. I want to use this because I need to control 6 heaters with K type thermocouples and I already have the temperature controller. Is it possible use the Duet 2 to tell the controller the temperatures and have the temperature controller do the actual work?

The temperature controller is set up to be controlled with an RS232 port right now, so I think this should be possible, but I don't really even know where to start.

Please help!