Day Seven: Interface ouput devices to Microcontroller and Driving Motor

Transistor Signal Lamp 

Driving Motor

Using the previous circuit we learned, we switch the lamp with our toy's motor in the circuit and controlled by the Arduino software.

Making Sounds

The round black buzzer in the picture is a piezo sounder. This is just the first step learning how to make sounds using the Arduino system. We will practice more advance programming as we go to make the sounds more musical and pleasing to the ears. Until then, we can incorporate what we have learned into our toy to make it more appealing.