(Some) Progress on the 3D printer

One of my work colleagues has an Arduino kit, that includes amongst other things a stepper motor driver, an ULN2003APG board,  and I convinced him to lend it to me.

ULN2003APG_front

ULN2003APG_back

This weekend I had some time, so I played a bit with it. After reading it’s data sheet, and comparing some examples I found online with other motors; finding those motors data sheets and comparing their coils connections with my motor, I got to this schematic:

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On the (bumpy) road to build a 3D printer

When the craze with the quadcopter drones started, of course I wanted one, so I bought a few (cheap) parts to learn how they work and played aroud with building one. I’ve never finished the project, because…. I don’t know… I „postponed it”.

Now, in the middle of the craze with 3D printers, naturally, I wanted one as well. I can’t afford one, mostly because I’m not willing to spend that much on something that I’ll not use so often.

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