Hi everyone, I'm fairly new at this and was hoping to get some comments on the picks of my board. I was left a little confused about the 1.3a recommendations related to power and various unused connectors: 1. Latest info indicates that the R/A ATX4 is best choice in conjunction with the regulator? Does this mean also that the 3 individual 12V power taps near the motor connectors are not required? 2. For the stepper drivers, what do you all recommend? Should I go with the StepStick? I've seen them with and without heatsinks, are the sinks needed? Anybody selling empty PCB, thinking of trying my hand at reflow. 3. Anywhere in the U.S. make the StepStick (empty PCB or full)? For some reason I couldn't post two images so I don't have the bottom of the board. https://reprap.org/forum/read.php?158,109374,109374#msg-109374 Sun, 13 Sep 2026 04:00:36 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?158,109374,123526#msg-123526 https://reprap.org/forum/read.php?158,109374,123526#msg-123526 ifrisbie Sanguino(lolu) Sun, 11 Mar 2012 11:26:34 -0400 https://reprap.org/forum/read.php?158,109374,119718#msg-119718 https://reprap.org/forum/read.php?158,109374,119718#msg-119718
ifrisbie: you don't have AUTO-RST jumper soldered...

My board]]> Kallio Sanguino(lolu) Sun, 19 Feb 2012 14:43:59 -0500 https://reprap.org/forum/read.php?158,109374,109556#msg-109556 https://reprap.org/forum/read.php?158,109374,109556#msg-109556 Lsutehall Sanguino(lolu) Sat, 10 Dec 2011 06:20:45 -0500 https://reprap.org/forum/read.php?158,109374,109537#msg-109537 https://reprap.org/forum/read.php?158,109374,109537#msg-109537
Roy]]> roygpa Sanguino(lolu) Fri, 09 Dec 2011 21:27:30 -0500 https://reprap.org/forum/read.php?158,109374,109524#msg-109524 https://reprap.org/forum/read.php?158,109374,109524#msg-109524 ifrisbie Sanguino(lolu) Fri, 09 Dec 2011 18:54:19 -0500 https://reprap.org/forum/read.php?158,109374,109482#msg-109482 https://reprap.org/forum/read.php?158,109374,109482#msg-109482
The 12v plugs near the motors are outputs. I am using one of mine to drive a 40mm fan to cool the hotend.]]> Lsutehall Sanguino(lolu) Fri, 09 Dec 2011 12:58:55 -0500 https://reprap.org/forum/read.php?158,109374,109413#msg-109413 https://reprap.org/forum/read.php?158,109374,109413#msg-109413 nophead Sanguino(lolu) Fri, 09 Dec 2011 05:12:58 -0500 https://reprap.org/forum/read.php?158,109374,109383#msg-109383 https://reprap.org/forum/read.php?158,109374,109383#msg-109383
I used the screw terminal for power...I don't think the old supply I am using has an ATX4 connector. But, either is fine. I think the Mouser BOM has both, but only one can be installed...they occupy the same spot on the board. I don't know what the 12V connections near the motor connectors are for; I didn't use them.

Pololu A4988 is better than A4983 (which you probably can't find anymore, anyway). I haven't seen StepStick available in the US. I was fortunate to have a local source (Lulzbot/Aleph) that I got my A4988s from, assembled with pins, at a reasonable price.

I am told that heatsinks are not necessary with A4988s, but I have some memory chip heatsinks that I will glue on if I find they do get hot.]]> RobertB Sanguino(lolu) Thu, 08 Dec 2011 22:40:51 -0500 https://reprap.org/forum/read.php?158,109374,109374#msg-109374 https://reprap.org/forum/read.php?158,109374,109374#msg-109374
1. Latest info indicates that the R/A ATX4 is best choice in conjunction with the regulator? Does this mean also that the 3 individual 12V power taps near the motor connectors are not required?
2. For the stepper drivers, what do you all recommend? Should I go with the StepStick? I've seen them with and without heatsinks, are the sinks needed? Anybody selling empty PCB, thinking of trying my hand at reflow.
3. Anywhere in the U.S. make the StepStick (empty PCB or full)?

For some reason I couldn't post two images so I don't have the bottom of the board.]]> ifrisbie Sanguino(lolu) Thu, 08 Dec 2011 20:31:45 -0500