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Mini-Rambo - Assembled PCB


Mini-Rambo 1.3

$ 95.00

This is Mini-Rambo v1.3a. The Mini-Rambo board is an all in one 3D printer motherboard. It is a compact version of our RAMBo v1.3L design with the Arduino MEGA and stepper drivers all on one integrated PCB. A great alternative board if you need just the basics!

Major Features - 4 x integrated 1/16th microstep motor drivers, 4 PWM Mosfet outputs, 3 thermistor inputs, pwm motor current control (no tiny knobs to tweak), SMPS supports hostless printing on power supply voltages from 10-28V DC, 2 fuse protected power rails (Heated Bed, 15A 10-35V, and Primary Power 10A 10-28V: Motors (5A dedicated fuse) + Extruders, Fans, & Logic (5A dedicated fuse)), LUFA USB, high quality connectors, did I say hacker friendly ...

This product is available to purchase a couple of ways. You can select the PCB only, pre-assembled with all electronic components securely soldered to the PCB, ready for use. This option does not include any of the matching male plugs, connectors, switches or wire harnesses.
With the complete kit, you will receive the endstop wire harnesses & switches of your choice, wire harnesses are complete with pre-crimped & housed ends.  Also included in the complete kit are the matching male pluggable screw terminal blocks, two thermistor wire harnesses with pre-crimped & housed ends, a 6' USB cable & we throw in gold crimp connectors and matching housings for use on motor wires & possible extra fan wires. See kit details at the bottom of this product page.

Firmware / Hardware Information -
Mini-Rambo is designed to work with the current RAMPS generation firmwares with minimal modifications to add firmware pwm motor current control and the microstep setting pins.

Linux and Mac use CDC interface and have hardware driver built in. Mini-Rambo Windows hardware driver:

A preconfigured Marlin Firmware is preloaded onto the board. To re-flash this board, you can simply use the Arduino IDE with Rambo Addons and set board to "Rambo". There is an Arduino plugin folder on github that exposes additional pins in the Arduino IDE.

Recommended Power supply 12V-28V DC, 16A+.

Dimension Drawing PDF availble here.

Additional information and sources at  This board is Open Source Hardware licensed Creative Commons Attribution-ShareAlike 3.0.
Designed and assembled in USA by UltiMachine.

Mini-RAMBo Complete Kit Includes:


NOTE: If purchasing this board as a replacement for one received in another distributor's printer kit, please "Add a note to your order" ("notes" located in shopping cart view) prior to checkout regarding your printer's name/version/distributor details. The controller may require some adjustments for printer compatibility. Thank you!

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