What is the IR sensor installation process?

kotuo

Hello!
Please excuse the length of this article.
This is the first time I have installed a Z probe.
So I have done some preliminary research on my own by visiting some websites.
URL
[https://miscsolutions.wordpress.com/mini-height-sensor-board/]
[https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Mode_Num_1]
[https://duet3d.dozuki.com/Wiki/M558]
I would like to know if there are any omissions in the process of installing the IR Sensor.
My printer type will be a Cartesian printer.
Please let us know if there are any errors.

This is the sensor used in this project.
URL:[https://ja.aliexpress.com/item/1005001594649470.html?spm=a2g0s.9042311.0.0.10fe4c4duE7tdr]
This sensor is probably based on the DC42Mini height sensor.
Is it correct to wire the sensor as shown in the diagram?
rudy M.png

Next, I have a confirmation and a question about the G-code.
My version of Duet2 is here.

RepRapFirmware for Duet 2 WiFi/Ethernet version 3.2.2 running on Duet WiFi 1.02 or later

We are using Duet Web Control 3.3.0.
You will probably need to use the RRF3:M558 code.
Now config.g

; Z-Probe
M558 P0 H5 F120 T6000                          ; disable Z probe but set dive height, probe speed and travel speed
M557 X10:220 Y10:220 S20                       ; define mesh grid

The modified config.g

; Z-Probe
M558 P1 C??? H10 F60 T60
M557 X10:220 Y10:220 S20

P1 : set to mode 1
H10 : Diving distance of the Z-probe * This is the first time I have set it up, so I set it high.

I have a few questions.
I don't understand parameter C. What should I write in parameter C?
The F parameter was described as the probing speed.　Does this mean that I can use the speed at which I normally print as the parameter value?
The T parameter was described as the speed of movement to and from the probe point. What is the difference between this and the F parameter?
※My printer is usually running at a maximum speed of 60mm/s. The speed that gives the best combination of accuracy and speed is 40mm/s.

I have a question about platforms.
The platform I am using is a transparent glass plate with white masking tape on the back, which is placed on top of an aluminium plate.

Would it be better if I remove the masking tape and put a piece of black paper between the glass and the aluminium plate?

Finally, the IR Sensor will be mounted close to the hot end.　I don't currently have a silicone boot on my hot end. Should I add a silicone boot?

Thank you for reading to the end of this long article.

Dougal1957

@kotuo see https://miscsolutions.wordpress.com/mini-height-sensor-board/

T3P3Tony

@kotuo said in What is the IR sensor installation process?:

Is it correct to wire the sensor as shown in the diagram?

yes assuming this is a clone of the DC42 IR sensor

@kotuo said in What is the IR sensor installation process?:

RepRapFirmware for Duet 2 WiFi/Ethernet version 3.2.2 running on Duet WiFi 1.02 or later
We are using Duet Web Control 3.3.0.

Its best to run the same version across everything so please upgrade to 3.3 on the Duet

@kotuo said in What is the IR sensor installation process?:

M558 P1 C??? H10 F60 T60
I don't understand parameter C. What should I write in parameter C?

the pin names are here:
https://duet3d.dozuki.com/Wiki/RepRapFirmware_3_overview#Section_Pin_names_for_Duet_2_WiFi_Ethernet

So M558 P1 C"zprobe.in" H10 F60 T60

The F parameter was described as the probing speed.　Does this mean that I can use the speed at which I normally print as the parameter value?

This is the speed the probe moves when it is probing, in mm/m so something like F300 is a good start, slower is more accurate to a point but obviously take longer. you can run sone repeatability tests to confirm at what speed you start getting unacceptable variance in results.

The T parameter was described as the speed of movement to and from the probe point. What is the difference between this and the F parameter?

This is the speed that non probing moves will be made, so for example between probe points during mesh grid probing. This can be a safe travel speed for your machine, normally faster than your printing speed:

Tnnn Travel speed to and between probe points (mm/min). This is also the Z lift speed after probing. The corresponding axis speed limits set by M203 will be used instead if they are lower.

@kotuo said in What is the IR sensor installation process?:

Would it be better if I remove the masking tape and put a piece of black paper between the glass and the aluminium plate?

Probably you can test with the white surface first through it may turn out to be not very reflective to IR.

@kotuo said in What is the IR sensor installation process?:

I don't currently have a silicone boot on my hot end. Should I add a silicone boot?

Normally a good idea. electronics don't like to be too hot.

kotuo

@t3p3tony Thank you for your reply.
Thank you for the clear site on C parameters.
I will refer to it.