This is the nice thing about breadboards they make it very easy to fix mistakes when you are building a circuit. If you accidentally pushed a wire into the wrong hole, you can just pull it out and re-insert it into a different hole.If even one wire is disconnected, the motors will not spin. Remember, you need a complete circuit in order for the motors to work.If the motor does not spin, make sure you have the wires firmly pushed into the breadboard, and that they are arranged as shown in Figure 9.Just one of the motors (the one you connected to the breadboard) should start spinning. Use your other hand to turn the battery holder's switch to ON.Hold your robot carefully in one hand, so your fingers and arm will be out of the way of the popsicle sticks when they spin.Now it is time to test your first circuit.Connect the first motor's wires to the breadboard. Optional: Camera to take pictures of your robotįigure 9.Optional: Arts and crafts materials to decorate your robot (pipe cleaners, googly eyes, etc.).Other materials you could use to help attach parts of your robot together.You will also need the following tools and supplies: AA batteries (must be ordered in multiples of 4, but this project only requires 3), part #198707.3xAA battery holder with cover and switch, part #216144.Note that the motors are sold in a two-pack. Geared DC motors with leads (2), part #2260834.The following electronic components can be purchased from Jameco Electronics: If your robot falls apart, how do you think you could re-connect the pieces to make it stronger?.What is a breadboard, and what is it useful for?.Why is a battery required to make the motors spin?.If you are not careful, it could even cause some of the pieces to fall off! In this project, you will put your engineering skills to the test to see if you can design and build a sturdier dancing robot. There is just one problem-all that flipping and tumbling around can be pretty hard on the robot. You can learn how to use a breadboard in the Science Buddies reference How to Use a Breadboard for Electronics and Circuits. You can just pull the wires out if you make a mistake. Breadboards make it very easy for beginners to make circuits, because the wire connections are not permanent. In this project, you will use a breadboard (the green rectangular piece in Figure 1) to make it easier to connect the wires in your circuit. If you want to learn more about electricity, you can read the Electricity, Magnetism, & Electromagnetism Tutorial. Electricity cannot flow to the motor without a complete circuit. When you connect the motors to the battery, you complete an electrical circuit, which allows electricity to flow and make the motors spin. Electricity powers battery-operated devices that you use every day, like toys or television remotes, and also powers things that plug into wall outlets like lamps. In order to power the motors, the robot also needs a battery, which provides electricity to the motors. Each motor spins around when it is turned on, and has a popsicle stick attached to it as a "leg," which pushes the robot around when it moves. The robot uses two small motors in order to move.
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