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A vibrating "robot" bug that hums like an insect and walks around on its own. Easy construction with a lot of opportunities for kids to learn. The bug works very well on tiled floors, where it follows the grid as a foot gets stuck in a groove. Depending on how it is balanced, it will move around a room and provides lots of fun for youngsters. I used the cheap syringe switch Instructable for a battery pack and on/off switch.
Step 1Materials
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The bug is made from materials that are available around the house. There are many different vibrating toys and this is certainly one of the easy ones to build. You may of course improvise and use anything that is available. The soda can must be empty, but can also be substituted with a cardboard roll, a plastic bottle or whatever you desire, as long as it is not too heavy and has air inside to help create the BUZZZ effect. The little electric motor is from an old toy, but can also be bought for around $2 US from electronics supply stores. Here is the list:
1 empty soda can
2 x 5 inch cable ties
1 x 20 inch cable tie
a good length of wire (see picture)
1.5V toy motor
small gear or connector that fits motor
small bolt and 2 nuts
thin electric wire
tape
soda bottle top
1 AAA battery
a small syringe to hold the battery
2 more nuts, to make the switch