Has anyone used these chinese stepper expansion boards to add a 3rd extruder to Ramps 1.4? chinese stepper expansion board If so, can you share any pics, pinouts or wiring diagrams. Seems there is no documentation for these chinese boards. Thanks b https://reprap.org/forum/read.php?1,739520,739520#msg-739520 Wed, 09 Sep 2026 00:17:42 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,739520,782484#msg-782484 https://reprap.org/forum/read.php?1,739520,782484#msg-782484 www.ebay.com]]]> 3DLTech General Wed, 09 Aug 2017 00:50:55 -0400 https://reprap.org/forum/read.php?1,739520,739533#msg-739533 https://reprap.org/forum/read.php?1,739520,739533#msg-739533
[www.aliexpress.com]]]> DragonFire General Tue, 17 Jan 2017 03:37:37 -0500 https://reprap.org/forum/read.php?1,739520,739532#msg-739532 https://reprap.org/forum/read.php?1,739520,739532#msg-739532
I put in a search for bigtree-tech.com, ended up here, did a search for expansion, it doesn't show up (but lots of other interesting, more up to date kit does show up).

I don't see any single stepper expansions there, so maybe it's designed to fit in their other products, not actually in RAMPs as such. Not sure.

[www.biqu.equipment]]]> DragonFire General Tue, 17 Jan 2017 03:33:34 -0500 https://reprap.org/forum/read.php?1,739520,739520#msg-739520 https://reprap.org/forum/read.php?1,739520,739520#msg-739520
chinese stepper expansion board

If so, can you share any pics, pinouts or wiring diagrams. Seems there is no documentation for these chinese boards.

Thanks
b]]> n9jcv General Tue, 17 Jan 2017 02:07:43 -0500