Introducing the Raspberry Pi-A-Sketch

Share on facebook
Share on twitter
Share on linkedin
Share on whatsapp
Introducing the Raspberry Pi-A-Sketch

Modder Francois Dion created the Raspberry-Pi-a-Sketch with a little help from Python after attending a session at PyPTUG (the PYthon Piedmont Triad User Group) about motors.

“We did a lot of stuff with motors. DC, servos, H bridges, PWM and steppers,” Dion explained. “It was a very dense 3 hours. We covered a lot, and it was a lot of fun.”

Components? An Etch-a-Sketch, some stepper motors, a battery pack, a Pi, an 8-channel Darlington pair and some leds, wires and headers.

According to Liz at the Raspberry Pi Foundation, Dion has designed a device that uses Python to draw all those things on an Etch-a-Sketch that, as kids, “had us throwing the things at the floor in frustration” at the uselessness of our fat thumbs.

“Horizontal, vertical and diagonal lines? No problem. And with a bit of help from Bresenham’s algorithm, you can draw circles too,” Liz wrote in a blog post.

“This sort of demonstration is exactly the sort of thing that captures the imagination, and opens up the eyes to what you can achieve with a little programming and a little solder flux.”

Instructions on how to configure the Raspberry Pi-A-Sketch hardware are available at Raspberry Pi Python Adventures, while Dion plans to write a blog post about the Python software side of the Sketch. In the meantime, the source code can be downloaded here at Bitbucket.


Do NOT follow this link or you will be banned from the site!