Looking for a new mainboard? The RAMBo isn’t going to turn blue anytime soon, but it’s a damn fine board either way. http://reprapelectro.com are a newcomer to the 3D printer game - find out how they stack up against the super-cheap or super-expensive alternatives!
http://www.youtube.com/watch?v=6PHExxK8lLg
Hi Thomas, Excellent review. Detailed and thorough. Very informative. Tks.
Nice vid as always Tom. 1 question tho, are heat sinks required on the rambo stepper drivers?
@David_Gray the RAMBo has a larger area around the drivers than the Pololu driver boards, as well as four layers of copper in the board, so they will stay a good bit cooler than the Pololus. You can definitely use them without heatsinks, but will still need to add them (preferably to the bottom of the board) if you’re really pushing the drivers to their limits. These are A4982 chips instead of the A4988, so the don’t have an overcurrent shutdown, which lets them supply more current than the A4988 if you have good cooling.
Nice! Liked the in-depthness and the length, especially the attention to proper power design on the board as well as checking out the exact components used, I.e transistors.
Now is that chip that adjusts the motor driver current an ADC or a DAC? 
@Sanjay_Mortimer1 crap, right. Thanks for catching that!
Very much to the point, good review. Thanks
Nice work.
The Rambo is Johnny Russel’s design (creator of RAMPS). I’ve been using them for about a year. No heatsinks have been required. The machines run between 14-20 hours a day 6 days a week with no cooling fans on the board. I’ve built several Mendelmax 2s with them.
I like the all in one design and the fact that you can run them on 24 volts out of the box as well as the positive locking connectors and cable management. For $100 it’s a deal though the version is a 1.1b and the current version is 1.3L. There were minor issues with pre 1.2 versions including a wire angle fix on the supply that could cause issues.
All in all it’s a great board.