Hacked Gadgets Forum

December 19, 2010

Ruler Clock

at 8:05 pm. Filed under Cool Gadgets, DIY Hacks, Electronic Hacks

This Ruler Clock looks like it would have been tons of fun to build. It uses a few stepper motors that are driven by a motor shield that is connected to an Arduino.  Nice thing about these small steppers that are used in this project is that they can be found for free everywhere you look. Next time you see one of those disposable $50 printers being tossed out because the ink refills cost more than the printer is worth think about the small steppers that are hiding inside. Scanners and floppy drives are also gold mines when hunting for free steppers.

The brains:

  • Arduino with Adafruit motorshield – This is definitely overkill, and I used this simply because I already had it.  If you have an Arduino compatible board that isn’t otherwise gainfully employed, then it’s quite easy to whip up a circuit using L293 ICs on breadboard that will drive a couple of stepper motors. Look here: http://www.tigoe.net/pcomp/code/circuits/motors/stepper-motors, for circuits for driving steppers from an arduino.
  • The logic/timing part of the code would be the same for all versions, but the interfacing code will be a little different.
  • Any Arduino compatible board will work fine as far as I know.
  • 2x Stepper motors.  I tested this will some dead cheap little steppers that have almost no torque and only 20 steps per revolution.  I paid next to nothing for them.  I also made a version with some good quality NEMA17 steppers with 400 steps per revolution.  I paid about £14 for each of those. I ended up using the cheap small steppers.
  • In the Arduino code, modify the value “stepsPerRevolution” to reflect the kind of motor you have.
  • You’ll also need a power supply, maybe two if you have big beefy motors.”


Buy online safe, and prescription low ever, delivery, payment priligy . Learn you safely cheap online prior secure...

Related Posts

Ruler Tattoo
Sunshine Alarm Clock
DIY Circular Stepper Motor Clock
3D Printed Wall Chain Clock
Arduino based RGB LED Hard Drive Clock
Money Shredding Alarm Clock Project
Car Horn Alarm Clock
RGB Arduino LED Clock



One Response to “Ruler Clock”

  1. Whatnot Says:

    Oh man, that would drive me so nuts to have in the house.

Internal Links:



Hacked Gadgets

Site Sponsors:

Nuts and Volts Electronic Labs Trossen Robotics Free Technical Publications Blue LED


Recent Comments:

More RSS Feed Options

Site Sponsors:


Interesting Sites: