# Drunken Drawing Robot !

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Inspired by the pocket drunken robot, I wanted to give the robot a job to do. I decided to let the drunken robot make some drawings. To make your own you'll need the following:

materials:
3 felt-tipped markers
a button cell battery
a vibrating motor from a cellphone or pager

a laser cutter ( run to your local fablab, or order from ponoko! )
some plexiglass or wood for laser cutting (light wood seems to work best)

Here's some in action:

### Teacher Notes

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## Step 1: Materials and Mesurements

Once you have your materials ready you'll need to make a couple quick measurements. We're going to be making a special plate to hold everything, so you'll need to find out the diameter of your pens and your vibrating motor. We'll use these measurements to cut out holes in the plate to hold the pens and the motor.

## Step 2: Design Your Plate

Fire up your favorite vector graphics program and design your plate. I used a triangular shape which is nice and stable, the middle hole is for the motor. I made the hole for the motor a little off-centre so the robot's movements are more eccentric.  Then you'll fire up the laser and cut out your plate.

## Step 3: Put It Together

Slide your pens into the holes in the plate. You can slide the motor in to its hole as well, insert it with the leads sticking up so you can easily attach the batter without flipping the robot over. Attach the leads of the motor to the sides of the battery with the adhesive foil. If the motor doesn't fit in its hole you can always use some hot glue to secure it in place. Your robot should start buzzing now!

## Step 4: Let It Draw!

let your drunken robot go nuts! make some friends for him to bump into and make even cooler drawings.

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## 30 Discussions

Great idea... However, I can't find the right motor. The ones I got from china, are too weak to move even a paper cut version. Anyone has a link or some specs?

how-what happens when we add some sound sensorsto this instructables,which can listen and draw simultanously ? :D it could draw pictures through beautiful love songs

I just saw this. Very cool indeed! Not sure I have the know-how to do this though.

I just saw this. Very cool indeed! Not sure I have the know-how to do this though.

My Cubscout pack did a similar project for a district show 15 years ago. They used 3 markers glued to large "big gulp" plastic cups. We mounted small motors with an offset propeller sticking out of a clear plastic dome. Everyone made theirs unique with paint and extra hardware glued on. It looked like an invasion from outer space drawing artistic masterpieces on large sheets of paper. What fun it was. Kids and parents both had a blast.
Thanks for your post. You brought back a terrific memory.

I dont have nor have access to a lazer cutter, is there a good way, or you can suggest an alternative?

2 replies

how did you put the motor so it turns the platform and not the motor itself?

With a couple of adjustments this would make a great introduction to electronics project for my KS3 year seven group. Thanks very much.

This is a great project! Getting them to turn on and off was kind of a problem, so we took two of them and used computer wires and connected them to a 9V battery and an on/off switch off to the side. Though the switch worked great the robots did sometimes get wrapped up in the wires. We also used two different size vibrating pieces of a Play Station 2 controller instead of one from a cellphone so that the two together would make different size circles.

I may just make this.  I have an Epilog laser, and I found that I can get real good results from eighth inch birch plywood available from Woodcraft.com, and I can find vibrating motors at sciplus.com.