Train That Makes Noise With Arduino, by Graecen, Gabe, Abdi

We made a train that makes a noise every 10 seconds.

Wires, resistors, a transistor, a toy sloth, a relay, a breadboard, and an arduino.

You have to unscrew the screws on train, the pry it open.

Strip the two white wires with a wire stripper/cutter.

Follow the wiring diagram pictured.

Connect the wire under the relay with an alligator clip to one of the white wires. Connect the wire in the top right of the relay with the other wire.

Copy the code pictured above. Then upload the code and it should work! If this doesn't work, swap the sloth for a train.