Last modified:
2020 Feb, 2nd

Back to main page

Connect a CNC milling machine or CNC engraving machine to your LPT port. With GeoCNC you can easily load and start simple G-code scripts.

Ideally suited to produce simple boards or for smaller milling jobs in model making and engraving.

GeoCNC is a R-BASIC application and is provided with source code

Download and installation

You need the Universal-Installer by Rainer Bettsteller, which can be downloaded freely from his page.

GeoCNC (, 2020 February 1st.) The program with all libraries and R-BASIC sources to operate a CNC machine.

Source code of the CNC_CTRL library (, 2020 February 1st). Not required, just for information

Controller interface circuit diagram (PDF)