I'm just learning about 3D printers. My friend has been using his for about 2 years now. I'm trying to build my own. It's a RepRap Mendel I2 I've modified to print 200mm tall. I've got everything built already. The trouble I'm having is with the electronics. My friend uses a Sanguinololu board with Sprinter firmware (He bought his kit through RepRapPro with Melzi electronics and fried the Melzi bby KingDingRing - General