You can use your own vent design to work with this code too , just need to turn the servo timmings to your vent style or just use the provided one Use any grease of your choice on the gear and ...

[Fabian Chouteau] built a plotter out of CD-ROM parts. Yawn, you say? Besides being a beautiful physical build, this one has a twist. He wrote the software and firmware for the entire project himself, ...