The LCD is driven by 74HC595 shift register in order to conserve pins on the Arduino. The system is also designed with a pretty slick setup interface. When it is booted, the user can enter a ...

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.

If you have allergies than you've likely considered picking up an air quality sensor for you house at some point. However, a good air quality monitor will run you upwards of $290.