Part 1: Sensors
Self built Arduino light sensor, magnetic sensor, LED metronome, servo motor controller, and temperature sensor.
Part 2: Controls
Self built Arduino LED brightness controller with 256 degrees and a doorbell that produce different sounds for front door and back door when the user presses/holds the button.
Part 3: Applications
Self built Arduino Stopwatch that is almost identical to a cell phone stopwatch. Users can count time, set laps, and reset the timer with this product.