VISHAL JOSHI: HOW TO BUILD A SIMPLE ROBOT

VISHAL JOSHI: HOW TO BUILD A SIMPLE ROBOT

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HOW TO BUILD A SIMPLE ROBOT

EXPERIMENT #3 - HOW TO BUILD A SIMPLE ROBOT

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This cardboard robot can pick up small objects with its specially designed arms.

1. Seven cotton reels or plastic tubs with lids
2. A small cardboard box
3. A hook or a magnet
4. Three knitting needles
5. Modelling clay
6. Cotton thread
7. Wire
8. Thick card
9. Sticky tape
10. Scissors
11. Corrugated cardboard

12. A cork
13. Paper fasteners

CATERPILLAR WHEELS

1. Slide a cotton reel onto each knitting needle. Push the needles through the base of the box. Place cotton reels on the ends of each needle and secure the ends with a lump of modelling clay.

2. To make a caterpillar track, cut two strips of corrugated cardboard. They should be long enough to wind over all three sets of wheels. Use sticky tape to join the ends of the track together.

AN ARM THAT STRETCHES

1. Cut six short strips from a thick sheet of card. The strips should be 18 centimetres long and 2 centimetres wide.

2. Lay the pieces of card out in a criss-cross pattern and join them together with paper fasteners. Use a large paper fastener to attach the arm at point "A" to the side of robot's body.

A PULLEY FOR LIFTING

1. Cut a hole in the back of the box, big enough to fit a cotton reel. Wind thread round a cotton reel, and tie a hook on the end.

2. Push the wire through one side of the box. Thread the cotton reel onto the wire. Push the wire out the other side.

3. Bend the wire to make a handle.

4. Push some wire through the cork. Bend the wire at either side to make 'legs', as shown. Push the legs through the front top of the box.

5. Pull the cotton over the cork, with the hook hanging down.

EXPERIMENTS WITH YOUR ROBOT

Collect as many objects as you can. How many of these objects can you pick up with your robot? What can you pick up with the pulley and hook? What can you pick up with the stretching arm? What would happen if you used a magnet instead of a hook?