OctoPrint is the snappy web interface for your 3D printer
Circuit diagrams and firmware source code for Gboard DIY keyboards
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
A C++ library for AVR and NodeMCU
My super mini robotic arm robot project
Import your PCB boards to FreeCAD
An open source controller for Scalextric community
Convert DXF drawings of circuit boards to gEDA-PCB files.
Pcb Yield Calculator