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Gears are hard
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Revisiting our school days with some maths
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Ah yes, a cat
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Mark trying hard to not screw it up
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Being #Cool
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#thriving
Inspiration
Us discussing what random consumer goods and toys could be turned into a hackathon project
What it does
Takes an input image, processes it, compiles to a file containing directions for the etch a sketch pen to move in and then controls motors accordingly to draw said image on the etch-a-sketch.
How we built it
A raspberry pi, some plywood, some 3D printed gears and a lot of tape.
Challenges we ran into
- Getting the raspberry pi connected reliably to eduroam
- Gears not meshing properly
- Needing to deal with backlash
- Electronics falling out when "resetting" (shaking the etch a sketch upside down)
Accomplishments that we're proud of
- It kinda actually works(??) - it does indeed draw what we tell it to
- Backlash compensation is kind of neat
- The good vibes
- Actually connecting the pi to eduroam
What we learned
- Hardware is hard!
- Raspberry pi's are hard
- Always look at the speed of motors before purchase
What's next for Etch-a-Sketch-as-a-Service
- Automatic shaking
- A web interface
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