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Etch a Sketch clock powered by Arduino
- Published_at:2014-03-06
- Category:Science & Technology
- Channel:dodgey99
- tags:
- description: My Etch-A-Sketch clock. I use an Arduino driving two very cheap darlington stepper drivers with 64:1 internally reduced steppers for the drawing. For the rotation I'm using an Easy-Driver driving a Nema 17 stepper. I also have a DS1307RTC real time clock installed so it always knows the time. Setting the time is a one-off via USB connected to a PC. Once done, you un-tether, and then the RTC keeps the time, for up to a year on the rechargeable battery, or so I'm told... The code is actually very simple, it's just a pain drawing the numbers! The G clamp on the back is for a counter balance until I find something more elegant! The steppers are far too slow to write the time in under a minute so I delay it for a couple of mins between each draw. Mostly to give the very hot motors a while to cool off and to give the etch a sketch a break! Now I' know it works I've got some decent Nema 17 motors and bigger drivers on order. Then it will draw the time very quickly A good fun project and I've learnt a lot. The biggest expense is the GT2 pulleys and belts. They are just not cheap from anywhere.... at least I can re-use them for future projects.
| ranked in date | views | likes | Comments | ranked in country (#position) |
|---|---|---|---|---|
| 2014-03-30 | 14,529 | 28 | 8 |
( ,#68)
( ,#68)
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| 2014-03-31 | 21,099 | 43 | 28 |
(,#68)
(,#68)
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| 2014-04-01 | 25,339 | 55 | 36 |
(,#83)
(,#83)
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