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Questions about building your own printer.

4 votes
2 answers
2k views

What does the trimpot on my Switching Power Supply do?

On my Switching Power Supply there is a little orange trimpot that's marked VR1; what does that do, and does it work similar to the ones on the stepper drivers?
leeand00's user avatar
  • 1,943
3 votes
1 answer
110 views

How do I determine that the electronics are working with the test firmware?

You may want to use this code to test all the electronics before installing any of the suggested firmwares. From Final Step in the RAMPS 1.4 Wiki There's a bunch of code in the sketch, and i …
leeand00's user avatar
  • 1,943
4 votes
2 answers
325 views

In the standard PC Cable Wire that goes from the wall outlet to the switching power supply, ...

What are the specifications of the three wires inside a PC cable that is used to connect the switching power supply to a US AC outlet. The positive, negative and ground appear to be the same gauge st …
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  • 1,943
9 votes
3 answers
170 views

When building a RAMPS 1.4 based printer, can I safely plugin just some of the components to ...

If I need to test out some of the components of a RAMPS 1.4 based 3D Printer, can I only plug some of them into the board (not all of them) and test them out? I'd like to test out the NEMA 17 motors …
leeand00's user avatar
  • 1,943
5 votes
2 answers
439 views

How to properly use Polyisocyanurate (PIR) foam with the heated bed?

From what I understand, it takes a really long time for the heated bed to heat up using an MK2a heated bed. I've heard some people suggest that using Polyisocyanurate (PIR) foam (insulation that take …
leeand00's user avatar
  • 1,943
2 votes
1 answer
115 views

Can I use a pin header in a breadboard to wire up the z-axis motors in parallel?

Can I use a pin header with the molex on my Nema 17 motors and a bread board to wire up the z-axis motors in series? Also, do breadboards and pin headers have ratings, the way that wires do?
leeand00's user avatar
  • 1,943
8 votes
2 answers
11k views

How do I wire the z-axis motors in parallel on the Prusa i3?

There is a little circuit board, or breadboard or something in the diagram of the wiring for the i3. And it's mentioned that the z-axis motors need to be wired in parallel but beyond that they don't …
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  • 1,943