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Drew & Mithi's photostream
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Pintograph Development - Work in Progress
An Arduino is connected to a ladyada motor shield which drives two stepper motors, which drive this drawing machine.
The audio is me describing the settings, the steppers are being driven as Doubles to see if we can get a bit more juice out of them (probably un-necessary, but explains the high speed), and they are set to rotate at a ratio of 65:100. ie, one does 65 rotations while the other does 100 rotations.
Still need a bit of work to iron out the bugs running 6.5v steppers at 12v seems to heat them up a bit, power from an ATX computer power supply temporarily liberated from Mithi's PC.
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Uploaded on Nov 28, 2011
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