#ETCH A SKETCH ART MANUAL#
#ETCH A SKETCH ART CODE#

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jpa on Biomimetic Surfaces: Copying Nature To Deter Bacteria And Keep Ship Hulls Smooth.Clancy on Atmospheric High-Voltage Motor Makes Useful Power.Hackaday Podcast 178: The Return Of Supercon, Victory For Open Source, Exquisite Timepieces, And Documentation To Die For 2 Comments Posted in Toy Hacks Tagged Canny, edge detection, etch a sketch, open cv, plotter, raspberry pi, stepper, X-Y Post navigation We really like how this one just does a single path. That one cheats a little though, in that it rasters across the screen like a CRT. It’s hardly the first automatic Etch A Sketch we’ve seen – here’s one that automates everything including the shake to erase the drawing. Check out the short video below to see it in action. From there it’s just a matter of spinning the motors to create surprisingly detailed images. The Pi also accepts input image files and processes them for rendering through the plotter, first doing Canny edge detection in OpenCV, then plotting a single path through the largest collection of connected pixels in the image.

#ETCH A SKETCH ART CODE#

hooked his up to a Raspberry Pi and wrote some Python code to drive them. Replacing the knobs with steppers is straightforward, of course, but driving them is the trick.

#ETCH A SKETCH ART MANUAL#

For those unfamiliar with the toy, it’s basically a manual X-Y plotter that drags a stylus across the underside of a glass screen, scraping off a silver powder clinging to the glass to make dark lines. Intent on righting these wrongs, not only motorized an Etch A Sketch, but he’s also given it a mind of its own in a way.

As enchanting as the toy seems, it’s hard to see why it had staying power: it was hard for young fingers to twirl the knobs, diagonal lines and smooth curves required a concert pianist’s fine motor control, and whatever drawings we managed to make were erased at the slightest jostle of the tablet. Introduced in 1960 for the princely sum of $2.99 ($25.00 today), Etch A Sketch was to become a standard issue item for the Baby Boomers’ toy box.

Etch a sketch art