Thingiverse
PlotClock 3d printed by davepix
by Thingiverse
Last crawled date: 4 years, 10 months ago
PlotClock build based on Joo's original & Harlan's modifications
Modifications:
Expanded body for greater stability/durability
changed arms & wiper
made to use small screws I had on hand
holds a Quartet marker
use 10D nail for pivot on lift axis, little plug to keep it in if it's loose...
Mouser ears on body because one edge was lifting off my platform
note: error in comments for calibration as per http://www.thingiverse.com/thing:931498
// When in calibration mode, adjust the NULL-values so that the servo arms are at all times perpendicular NOT PARALLEL
Lift servo was reversed, I copied the section of code out of the sketch Harlan posted pertaining to lift only and pasted it over the original... to reverse the one servo.
Otherwise, I plan on using an Ardweeny as the brain, by expanding the case I should now be able to fit the brain in the box also. I haven't yet built a board for it with the pins and power filtration... likely I'll have to do it over again bigger as that's the way it works.
I am running it currently with an arduino duemilanove. Using USB power for the brains and a separate USB wall wart to power the servos. First attempts to use USB power only resulted in resets and strange action. I'm guessing I will need to add some caps to filter out the noise from the steppers.
I think the handwriting gets worse with each generation. I had hoped stabilizing the servo arm with two pivot points would make the handwriting better but it looks like I'll really just need to learn to code the font better if I want to do that.
Modifications:
Expanded body for greater stability/durability
changed arms & wiper
made to use small screws I had on hand
holds a Quartet marker
use 10D nail for pivot on lift axis, little plug to keep it in if it's loose...
Mouser ears on body because one edge was lifting off my platform
note: error in comments for calibration as per http://www.thingiverse.com/thing:931498
// When in calibration mode, adjust the NULL-values so that the servo arms are at all times perpendicular NOT PARALLEL
Lift servo was reversed, I copied the section of code out of the sketch Harlan posted pertaining to lift only and pasted it over the original... to reverse the one servo.
Otherwise, I plan on using an Ardweeny as the brain, by expanding the case I should now be able to fit the brain in the box also. I haven't yet built a board for it with the pins and power filtration... likely I'll have to do it over again bigger as that's the way it works.
I am running it currently with an arduino duemilanove. Using USB power for the brains and a separate USB wall wart to power the servos. First attempts to use USB power only resulted in resets and strange action. I'm guessing I will need to add some caps to filter out the noise from the steppers.
I think the handwriting gets worse with each generation. I had hoped stabilizing the servo arm with two pivot points would make the handwriting better but it looks like I'll really just need to learn to code the font better if I want to do that.