After uploading the code the Piezo will start making short beeps. On bright light the Piezo will only beep and on dark light it will be short. Some ideas for this experiment: Alarm for Lights in the ...

An Arduino Uno provides the processing power and drives the serial monitor. A joystick and a Hitachi H48C accelerometer are mounted on a breadboard and wired to the Uno.

However, a good air quality monitor . Skip to Main Content. View on Facebook Page ... He uses a cheap, $12 sensor with an Arduino and a Radiation shield and monitors the data on his computer.

It features two ultrasonic sensors mounted on your computer's display monitor ... with only an Arduino UNO, ultrasonic sensor, force-sensitive resistor (or push button), and piezo buzzer.