- 1 hour
Parental supervision required
Try out these kits, they're cracking!
On the TV show Wallace builds himself a Labour-Assisting Device – or LAD for short. Now you can build a robot helper too. He’ll definitely entertain you as he goes mad on your desktop. The little devil.Instructions below
This kit requires the use of a sharp object and heated tools, always be careful!Download kit Instructions for you to download and keep PrintPrint these instructions and get making!
Check you have all the required items listed in the ingredients box above.
Test your motor works by holding it's terminals across the battery as shown.
Make a contact for your battery using a paperclip.
9V battery: make loops around the contacts; try using the loops of a small paperclip. Be careful not to short-circuit the terminals! Ask someone for help if you're not sure!
AA battery: straighten a giant paperclip, then form one end into a contact and bend the rest of the clip around the battery.
Make sure you can still access the terminals, or have soldered a couple of wires on first. If you want your desktop devil to run straight, hot-glue the motor so the shaft points in that direction. If you want it to run in circles, aim the shaft upwards.
Add a wire from the battery to the switch, then from the switch to the motor. Finally, from the motor back to the other terminal on the battery. Go careful not to scratch the battery's insulation. Add a bit of insulating tape (or a few layers of sticky tape) between the battery and the paperclip.
Bend it until you have two pairs of legs. Hot-glue them into place. The legs should slant towards the back of your device, with little bent feet. Cut the paperclip legs to length.
Be careful not to get glue in the moving parts!
Anything that's off-centre will cause vibrations, even just a blob of hot-glue.
Place your Desktop Devil on a table or other flat surface. See how he runs…
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