The goal of this project was to create an automatic device that would sense the ambient temperature in a room using a thermoresistor and alert a user if outside a temperature range of 20°C to 35°C. The device would use a piezo buzzer and a flashing red LED while displaying the text "DANGER" on the LCD screen.

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The internal Arduino Nano is powered by a 9V battery with an operational on/off rocker toggle switch located near the I/O of the system. All electrical systems were soldered and insulated to prevent shorting. Custom 3D printed cable management clips were installed for neatness allowing for servicing without encountering wires in the way. This was done by utilizing an internal acrylic plate attaching the Arduino Uno and battery with clips routing wires underneath. The acrylic plate was able to be removed for easier access. 

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The device was programmed to react to a predetermined temperature range (20°C to 35°C) using the Arduino IDE software to program. As a result, the red LED would flash at a pulse of 3 Hz and the buzzer would sound for intervals of 1 second with 1 second of silence. A custom animation was implemented as a Nintendo Mario character running across the screen to reveal the word "Loading..."