P3Steel Electronics and wiring
The recommended electronics for the P3Steel is the ubiquitous Arduino Mega 2560 + RAMPS 1.4 combination, used in exactly the same way as in many other Prusa i3 derived 3D printers.
The Arduino Mega 2560 + RAMPS 1.4 + A4988 drivers + 80mm fan as used in the P3Steel make for a neat stack and this combination is very well documented in this wiki:
To avoid duplicating the excellent information available in this wiki, check: