Topics created by frafa

I'm sorry, I can't reproduce this issue. I used the settings you posted above, then sent G1 E1 first with x16 microstepping. Then I sent M350 to change the microstepping to 8, then 2, then 1 and repeated the G1 E1 command in each case. The motor moved the same amount every time, but was much noisier with lower microstepping.

I am using the candidate firmware build for 2.02RC4, but I don't think there have been any changes that would account for the problem going away. But I suggest you try upgrading to 2.02RC4 anyway when I release it.

I'll need more detail than that.

I suggest you start by testing the motors individual by sending G91 to select relative mode followed by G1 S2 X... and G1 S2 Y... commands. Use these moves to check that the steps/mm and steps/degree are correct.

When you are satisfied with that, send G90 to switch back to absolute coordinates, and test homing.

If homing is working, test straight line G1 XY moves at low speeds. Check that the moves look as though they are straight relative to a fixed point on the bed.

If that looks OK, try a very simple test print such as a cube, printed at low speed so that you can better see what is happening if something goes wrong.

Currently there is no direct support for a tool-dependent gamma angle offset. However, I think you could implement dual nozzle support in the tool change files like this, provided the distances from the distal joint to the two nozzles are equal:

1. Choose the head reference point, either at one of the nozzles or on an arc from the distal joint midway between them. Define the distal joint homing position based on that choice.

2. In each tpost#.g file, use a G1 command to move the HRP to a known XY position. Then use a G92 command to tell the firmware where the nozzle for tool # is when the HRP is at that position.

3. In the tfree#.g file, do the reverse i.e. send the nozzle to a known XY position and then use a G92 command to tell the firmware where the HRP is.

4. Put T-1 at the start of homeall.g (and homedistal.g if you use it) to make sure that homing is done correctly.