Need Help with BL Touch Set up

Shamusseven

And I guess the difference in the z motors is just in the transition from the first probe test (which still goes the opposite way) to the second, slower or I assume more accurate measurement. Just at that moment when the bed goes back down for the slower measurement, the left side start sooner. It appears the equal back up so not sure it’s an issue or not.

Phaedrux

sorry you're having a bit of trouble. I think part of the problem is that you're using RRF3 but you've either gotten config files for using 2.x version or used some documentation for 2.x version.

First

@Shamusseven said in Need Help with BL Touch Set up:

because yes it is just a few mm to the rear of the nozzel and about 37mm to the left of the nozzel.

G31 P500 X170 Y180 Z2.5

You must change the X and Y values to match the distance between the nozzle and the BLtouch. Also change from P500 to P25.

Here's an example of how to measure it: https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+5:+Upgrades/54#s230

Once you have the probe working, you will need to calibrate the Z trigger height, also described in that link.

You must change your deploy and retract macros to use P0 instead of P3. P0 reserves to servo index 0, which you created with the M950 command in config.g. In 2.x versions the P3 would have referred to the heater 3 pin directly.

M280 P0 S90 I1; retract BLTouch

M280 P0 S10 I1; deploy BLTouch

Since you are using the BLtouch with a DuetWifi, you will also need the I1 to invert the signal.

Your homeall looks fine.

AS for the Z axis direction, 0 is where the nozzle is touching the bed. 400 is when the bed is farthest away from the nozzle. Negative Z movement moves the nozzle and bed closer together, positive Z movement moves them farther apart. If that's not what's happening now, you'll need to change the direction of rotation for the motors on the Z axis.

Shamusseven

@radekzl I removed this file and now I can’t get anything to work.

Phaedrux

@radekzl said in Need Help with BL Touch Set up:

And check sd card if you do not have on sd card file iap4e.bin and delete it.

Do not delete that file. @Shamusseven

Phaedrux

you can redownload the file here if need be: https://github.com/dc42/RepRapFirmware/releases/download/1.21/iap4e.bin

DIY-O-Sphere

@Phaedrux said in Need Help with BL Touch Set up:

Since you are using the BLtouch with a DuetWifi, you will also need the I1 to invert the signal.

https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Software_setup_RepRapFirmware_Num_3

Create the deployprobe,g and retractprobe.g macros as described for using RepRapFirmware 2. The P value in the M280 commands should be your chosen GPIO/Servo index. You do not need the I1 parameter.

Phaedrux

@DIY-O-Sphere said in Need Help with BL Touch Set up:

@Phaedrux said in Need Help with BL Touch Set up:

Since you are using the BLtouch with a DuetWifi, you will also need the I1 to invert the signal.

https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Software_setup_RepRapFirmware_Num_3

Create the deployprobe,g and retractprobe.g macros as described for using RepRapFirmware 2. The P value in the M280 commands should be your chosen GPIO/Servo index. You do not need the I1 parameter.

Thanks.

Shamusseven

@Phaedrux Yes that is one of my frustrations. I started out over the weekend with 2.3 firmware but updated to 3.0. Now that I removed the one file mentioned above and nothing works, what do I do? I can’t even open the config.g file.

radekzl

@Shamusseven

I'm so sorry, but I have only this two files for firmware 3.01 RC6 and everything works fine.

and all standard files .g

DIY-O-Sphere

@Shamusseven
Are you still connected to the board over DWC?

Shamusseven

Nope. Totally shut out now. I added the file back to the card but now i can’t log back into my card. Tells me to check to see if my SD card is mounted correctly and it is.

DIY-O-Sphere

@Shamusseven

https://duet3d.dozuki.com/Wiki/Installing_and_Updating_Firmware#Section_Fallback_procedure_Num_1

DIY-O-Sphere

@DIY-O-Sphere
I woud try to only copy back the deleted files.

Shamusseven

Well copying just the one file did nothing so will have to see about doing the fall back

Shamusseven

okay I am back to being connected via wifi. I have made what I think everyone has mentioned but still not working right. I still can't get my bl to deploy probe except the 2 times on power up. And my Home z still is going revers. It goes down initially like it does when Home x and y to give clearance. Then it come up quickly and then slower down as it is looking to trigger the probe but should be moving up... then it comes up quick and goes back down a second time but slower for the second trigger pass. It neve triggers anything cause for starters the probe is still not deployed and also its moving away from the bl touch / nozzel. I am starting to worry I am damaging either my board or z motors.

Here is a fresh batch of config files as they are now.
bed.g config (2).g deployprobe (1).g homeall (2).g homez.g homex.g homey (1).g retractprobe (1).g

Shamusseven

Phaedrux

~~@Shamusseven Sorry, your pics didn't work. Perhaps they were too large?~~

Never mind I guess they are working now.

Shamusseven

@Phaedrux can you see them now?

Phaedrux

@Phaedrux said in Need Help with BL Touch Set up:

AS for the Z axis direction, 0 is where the nozzle is touching the bed. 400 is when the bed is farthest away from the nozzle. Negative Z movement moves the nozzle and bed closer together, positive Z movement moves them farther apart. If that's not what's happening now, you'll need to change the direction of rotation for the motors on the Z axis.

Did you see this comment earlier regarding your Z axis?

This is an Ender 5, so the bed is dropping away from the nozzle as the print progresses, so Z+ should move the bed down. Z- should move the bed up to the nozzle. If it's not doing that, you need to change the motor direction for Z.

; Drives
M569 P0 S1                                     ; physical drive 0 goes forwards
M569 P1 S1                                     ; physical drive 1 goes forwards
M569 P2 S0                                     ; physical drive 2 goes backwards
M569 P3 S0                                     ; physical drive 3 goes backwards

This is what you have in your config.g and if you have using the Z motor connector for your Z axis, you'd change M569 P2 S0 to M569 P2 S1

Your homeall looks fine.

For your deploy and retract macros, please try this, as I was incorrect about the I1 earlier as @DIY-O-Sphere pointed out.

M280 P0 S10 ; deploy BLTouch
M280 P0 S90 ; retract BLTouch

If that doesn't help, please try changing M558 P9 C"^zprobe.in" to remove the ^

If that still doesn't work, check your crimps and wire continuity.

If it does work, you'll need to test functionality with: https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

Shamusseven

If I hit Z + 5. The bed good down and z-5 it raises, as it should. The only issue there is when I run home z. That is when it appears to run in reverse. Or at least it appears to have an extra movement. Every time I run it, it always ends up further way from the nozzle. The last movement is away from nozzle and stops. So each time I run it, the bed is lower than before.