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Renoir's RepRap Single-Sided Stepper Driver board v2.3

by renoir, published

Renoir's RepRap Single-Sided Stepper Driver board v2.3 by renoir Jun 26, 2010

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Summary

This is a single-sided version of the makerbot stepper driver board v2.3
http://www.thingiverse.com/thing:393

I tweaked the board to make it easier to etch and make at home. The vias are not underneath components, simple wire links can replace the tracks on one side of the board, and the track sizes tweaked a bit.
It can still be improved.

Instructions

I've managed to etch and build 5 of these boards and at least 4 are working OK. The components are identical to the Makerbot version (see http://www.thingiverse.com/thing:393 ) and the board instructions are similar.

My version just has all the through-hole connectors soldered through, and the plugs go into the underside of the board (viewed from the SMT side).

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No results.

Not much heat sink area, any operational problems?

Very nice work! You just saved my a lot of time in Eagle. Thanks for sharing it.

I was learning eagle at the same time, so some of the tracks are actually several tracks on top - I'm a bit better at it now. If you're careful, you can drill a 0.8mm hole for the wire bridges, but on some of mine I ended up with not much copper around the pins. It might be worth increasing the pad size, if you can.

Looks great! How long did it take you to make the board and all of the components?

The first one, I took my time over and did carefully - (the one with the silkscreen). I made a couple of errors - the stepper headers I bought were smaller spacing, so I drilled some extra holes (later ones I added an extra connector header on the PCB).

It took me about 1 hour to laserprint, etch, and drill the board and about 2 hours total to dab on solder paste, place components, and SMD solder on my cooker ring.

I then got cocky, and made 4 boards at once (with some different board that I got from Maplin). When I tried to solder these on the hotplate, it burnt the boards quite badly and some of the tracks came off.

I remade the two badly burnt boards, and hand-soldered the rest with a soldering iron. It
works quite well, even with solder paste and SMD components - you can warm the track up and the heat flows into the paste.

By the end, I was about an hour to hand-solder a complete stepper board. YMMV :-)

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