Tools
Freeware tools used by the current project
Arduino IDE
Software tool to develop (and upload) μC code
Termite
RS 232 terminal console (data write/read to/from serial port)
Free Serial Port Monitor
Software tool to spy data exchanged through the serial port
Notepad++
Editor for the source code development
Minimalist GNU for Windows
Open source programming tool
Gnuplot
Command-line driven graphing utility (can be invoked by C code)
OpenGL & GLUT
Open graphics library and toolkit for generating 3D vector graphics
FreeCAD
General-purpose 3D CAD modeler
FreeCAD
3D printing software (to setup the 3D printer)
Usefull Links for Makers
Find free (high quality) photos and vector graphics https://pixabay.com/
A universe of user-created digital design files for your 3D printer, laser cutter, or CNC machine https://www.thingiverse.com/
A community for manufacturing and project sharing of (shipping free) printed circuit board (PCB) https://oshpark.com/
Marketplace for makers to fund and sell their hardware creations https://www.tindie.com/
A platform for freelancers to offer services to customers worldwide https://www.fiverr.com/