Pieter log

Saturday 25 January 2020

Building the D3D-Universal. Confusion on where to place the axes. Z-axis sensors are a bit different than the spec, they rate 6-36V, whereas the spec should be 5V. We have to connect the brown wire directly to 24V, so soldering them in. Adapt the power configuration since we are on 240V instead of 110V (States).

Sunday 26 January 2020

Confusion about the motor wires. The wires from the US are completely parallel, whereas the wires ordered from Europe are crossed in two different configurations. A Reprap drawing showed us a crossed configuration. Experimenting on the right setup led us to conclude that we need the parallel wires. Rewired all the wrong wires but they are more brittle now. We had problems with moving the axes: we could only move forward but not back on the X-axis. This confused us a lot, but this had to do with the right configuration of the end-stops.

Confusion about the axis set up and what "Home" was: In the firmware, home turned out to be (0, 150, 6) instead of (0, 0, 6). This, in combination with the wrong axes configuration was difficult to debug. Confusion about the direction of the motors. Cables can simply be turned.

The Z-sensor didn't work properly. We rewired it to 5V and then it behaved properly. The led is clearly less bright on 5V and Marcin says that it is less reliable but we have a decent experience with 5V.

The configuration of the pins for the end-stops is: - start X - end X - start Y - end Y - start Z - end Z

The right configuration of end-stops for us is:

X-axis: put the end-stop close to the motor. This would be our 0 point. This means that we need to put the cable of this end-stop in the first pins with the green wire on top. Y-axis: put the end-stop far from the board. This would be our 150 point, so we have to put the cable in the 4th pins position. Z-axis: This acts as a normal end-stop switch and it will determine our 0 point. This means that we have to put it in the 5th pins position.