@droftarts said in 1LC TOOLBOARD v1.1. Accelerometer fail:

1N4148W

Thanks for the information, I will buy the diode and solder it, I hope this will solve the problem.

@dc42 thanks a lot! Then it seems I have two options: either replacing the servo potentiometer with e.g. a hall sensor that fits into the original housing (the brass wheel in there is definitely big enough to work with a whole bunch of 1mm magnets being added) or going the way you suggested with the Arduino... the former might be beneficial when I look at the data sheet lifetime of an SV01 though.

So after some research.... and a quick look at the PrintEye code by @EasyTarget

https://forum.duet3d.com/post/110578

I think I have a plan based on the Json unpacking in PrintEye, to extract the following data:

extr: the positions of the extruders
efactor: the current extrusion factors (see M221 command), one value per extruder

Then sending a M221 to tune the extrusion factor after a user defined position delay based on filament path length between the sensor and the extruder melt zone.

The only kink is I'm not sure how to send a value to the Arduino to set the filament path length between the sensor and the extruder melt zone. I may have to hard code this to start with, or add a local display to set the value.

Does anyone know if I can add user defined elements to the json package sent to the Arduino as a response to M408? My thoughts are set a value for the filament path delta for each extruder with a user defined G/MCode (?) in the config.g.

I need to do some prototyping and merge it with Thomas Sanladerer's code and I possibly have a way forward!

https://www.printables.com/model/57154-infiDANK
https://www.youtube.com/watch?v=RYgdLPe_T0c

Multiple extruders needs a little thinking but I guess I could just connect multiple sensors to the one Arduino.

Also passthrough for the PanelDue, but I could use the code by @dc42 for the CNC pendant to sort that.

Will report back as and when I make progress! Another project to add to the list 🙂

Cheers
Barry M

@e4d said in Problem with Duet3D Magnetic filament sensor:

measured sensitivity 2609.32mm/rev

This is one hundred times less sensitive than expected.

I suspect that the rotation-part is not able to rotate smoothly.

Try pushing a piece of filament through the sensor and watch the back of the shaft that has the magnet on it and see if it rotates smoothly.

Sometimes it takes a little adjusting of the thickness of the case to get the magnet-to-sensor distance right.

Also, your agc of 58 is quite low which indicates the magnet is very close to the sensor. Take it apart and look for scratches on the top of the sensor to make sure they are not touching. If so, just add some paper shims in the case and try again.

@erfreuterstudent
that's a premier for me too, but we'll try.
With a toolchanger you could poll the diameter of the current tool in tpost#.g by using M118 S2 P"toolnumber"
Now the arduino reads this message and sends the aquired data, but here it get's shady for me. It is easy to receive messages and display them on DWC, but reading data into a global variable is unknown to me. I tried it over I2Cport, but fell into the same dark hole...
Maybe @dc42 has a solution now?

@dc42
at my first try, the sensors didn´t work(3.3beta1/3). One day later, without any changes they did work(3.3beta3and 3.3RC1). Since then they do work and only the M122 readout is wrong(3.3RC1).

@dc42 Thanks for pointing that bit out. I had missed that on the docs site. I filed it down some and it seems to be at a more acceptable range.

@dc42 Is this still on the to-do list or has it been implemented?