Today, I've come up with the proof that 7-year-old boys not only like ice, but are also interested in electrical circuits: especially when soldering is allowed to assist and in the end something moves. So we assembled our "Bristle-Bot" in about 30 minutes and immediately started against a dust mob.
Advertising block: the suggestion came from a book "Robot self-build" by Daniel Knox. (I do not receive any commission). We made the first base bot.
the original picture from the book
1 / 4 • picture 3 - the DC motor with cable clap
- Picture 1: From the battery block we have a switch as an on / off switch to the + pole to lit. A switch has 3 legs: the circuit is then closed as soon as the slide 2 of the legs has closed with the current-carrying cables.
- Picture 2: our solution works
- Picture 3: the motor with cable clamp, which provides in this case for the desired unbalance and thus ensures the necessary rotation.
After successfully testing that the motor can be powered by the battery and the switch can break the circuit, the assembly was attached to the bristle with hot glue and added to paperclips with shaky eyes.
The little bot does not have it easy against the big dust mob, but the little bot works until the battery fails ;-)A similar example can be found in the Bible, when David took on Goliath in battle. 1. Samuel - Chapter 17
We had a lot of fun together: learned about circuits that a soldering tip and also the hot glue need for a while to heat up, how a switch works and the voltage of a AAA battery is harmless.