Here is a quick rundown on the latest changes:
- since the final stepper motor driver that was supposed to run the extruder’s stepper turned out to be stillborn, and out of stock to boot, so no possible replacement, I decided to order a bunch of Pololu (more info here) stepper drivers. The first tests are very conclusive : microstepping, ridiculously small footprint, suprisingly less of a tendency to overheat(which weirdly enough directly contradicts what i heard about them on pretty much every site) , oh and they are much cheaper than the old drivers !
Here is a side by side with the old and the new drivers:
- I have also done an complete, but temporary wiring test with all stepper controllers, and really I will still need to build a perforated board system to hold all the drivers (this wiring spaghetti is really scary, stability wise) , as well as adding a cooling system of sorts.
- On more general note, as i am getting closer to a finished machine, i decided to change the project’s name: it say hello to DOBOZ ! what does DOBOZ mean you might ask ? Well it just means “box” in Hungarian, but you can also consider it as a pseudo acronym: Digitize Object Build ObjectZ ( yes I cheated ;)) since it will also incorporate a laser scanner.
- As you can see partially / guess from the above pictures, i have actually done a lot more work than is apparent in this article (working extruder and heater, lcd display etc), but that progress is sufficiently important to warant another article, so stay tuned:)