Three Part Clock





Introduction: Three Part Clock

A normal analog clock is an efficient way of piling three different bits of information on top of each other. The hours, minutes, and seconds can all be read with just one dial.

I like this system, but after a while I thought that each hand should get its own space. So for this I made the three part clock. Each hand has its own dial and reading the clock is just a matter of moving from left to right.

Step 1: Get Clock Parts

You can order clock movements and hands fairly cheaply online or, if you have an Ikea store nearby, you can buy three clocks for just $3 each.

Also needed, and not pictured, is a piece in which to put all the clocks. We had a scrap piece of wood 28"x10.5" so I just grabbed that. It's warped so this is just a prototype, but for a final version just get a better material and check the thickness so that the clock movements can stick through it.

Step 2: Mark Your Centers

The original clock faces were 7.5" wide so I planned to space them equally across the piece of wood and give a little extra margin on the left and right.

To prep for this, just find the right height and use your calculations from the last step to see how far left and right you need to mark the board.

Step 3: Drill!

Drill what? Drill the holes! On the dots!

Step 4: Glue in the Movements

A little bit of hot glue and the three movements are good and stuck to the board with their stems sticking out the front.

Step 5: Add the Hands

The first movement gets an hour hand. The second and third get the minute and second hands, respectively.

Below you can see the clock at 12:00, 3:30, and 10:08.

Step 6: Decorate the Clock

Add in the tick marks so it's easier to read the clock. These were done with two stencils. The same stencil was used for the minute and second hands.

Now add some varnish if you want or just put it up somewhere and wait for people to come by and try to see what it means.



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you can build a very acurate clock with a GPS-Reciever, it's far better than a normal radio-controlled one.

the right way to make the circuit.
note: if u use a high wuality batts, its not necessary to use 3 batts


This circuit is correct, but putting batteries in parallel is not good. They will self discarge through each other. You should only use one battery, but use a larger battery if necessary.

This won't necessarily work, unfortunately. Depending on the circuits, you'll find they may only pass current when they are moving the motor and will not pass hardly anything at other times. hence the clocks will interact and not work properly. The correct way to do this is to wire the clocks in parallel to one battery. Connect all the clock positives together to the battery positive and all the clock negatives to the battery negative. This of course means any battery will only last a third of the time, but that's exactly the same as changing three batteries which last three times longer. The advantage is you don't get clocks failing indiscriminately. You could always use a bigger C or D type battery of course to compensate.

I like this idea though, I wonder if it's possible to move the mechanisms around in order to get one mechanism driving three separated dials?

You need not bother with 3 batteries, just use a C or D cell, clocks in parallel.

i didn't test with this kind of batts... thank you for the advice

love it really wast to make one when i can find some clocks cheap enuf

 do you have the stencils you used? or do you know where i could get some?

That looks great, I love that you used wood! I agree with Kiteman, when the batteries start to lose the power each one will bet slower and they won't show the correct time... I looks like one of those boards that contain 3 scales, one that shows the moisture of the air, the other pressure and the third temperature, was that the inspiration for you? All in all a great project for the afternoon! I really love it and I think I am going to make one of these... rate:*****