Here are a few links to know controller boards from the RepRap wiki RAMPS -- An Arduino Mega shield-type board. Very popular. Sanguinololu -- a low-cost expandable all in one solution R2C2 electronics -- complete solution, quality and fast electronics, a really new generation of electronics for RepRap 3D printers and others like RapMan. Professional made but also development/hack friendly Generation 7 Electronics -- easy single board solution, designed for do-it-yourself. Generation 6 Electronics -- easy plug n play electronics, single board solution Pololu Electronics -- very simple electronics that can be printed by RepRap itself. Can also be built on stripboard. Fully tested, and supported by the standard RepRap software. Danguinololu -- A fully-integrated board with excellent cooling and debug facilities and easy-to-solder motor drivers, inspired by the Sanguinololu schematic. Gen_L_Electronics -- Designed to be very low cost, easy to assemble, but tethered to a computer via USB StepStick A low-cost drop in replacement for Pololus motor drivers - A4983/A4988 Repic -- "as simple as possible" all-in-one electronics based on PIC18F4550 or PIC24, on single-sided, through-hole PCB. Easy_electronics -- Sanguinololu firmware compatible board for dual extruder operation with built in 128x64 dots graphic LCD, click encoder wheel, SD-Card connector and USB interface. Easy to use all in one solution. STB_Electronics -- Sanguinololu firmware compatible board with graphic LCD, click encoder wheel, SD-Card and USB Melzi -- Sanguinololu firmware compatible board. MaKrMelzi -- improved Melzi board with exchangeable driver modules and support for graphical LCD Azteeg_X1 -- SMD remix of Sanguinololu +more. Harvey -- STM32F102 Cortex-M3 allmost-all-smd compact extendable all in one board ftw Megatronics -- Improvement over RAMPS, single board solutions with a lot of options. Very cheap compared to other options Phoenix -- easy for beginners to construct and repair: all through-hole parts All In One Electronics Brainwave grblShield (, ), made by Synthetos who develop TinyG Controller.