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Original circuit I found that I based my ideas around
Here is a snip of my eagle cad schematic including the entire circuit my initial plan to build was, including 4 push buttons, the temperature sensor, and an amplifier circuit to increase the volume/quality of the alarm. The snip directly above is just of the transistor amplifier circuit with a 2N2222 transistor, with R1=2kOhm
EagleCad breadboard design
Printed out circuit board
Breadboarded functioning circuit, photo below is a better photo of the LCD
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