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This Instructable is to provide a way of displaying the life of a battery on a LCD. This can be useful if you have a project that is powered from batteries. It'll provide an indication whether you need to change out your batteries. The code may also be adjusted to include an alarm or warning LED. The possibilities are up to you!

Step 1: Connecting LCD, Arduino and Battery Source (Wiring Diagram)

WARNING: DO NOT CONNECT GREATER THAN 5V TO THE ARDUINO'S ANALOG PINS. THIS COULD POTENTIALLY DESTROY THE MICROCONTROLLER OF THE ARDUINO.

Components Required:

Arduino Uno

Battery (0-5V)

(1) 10K Resistor

(1) 16x2 LCD (16 Pin)

Jumper Wires

Connect in accordance with the diagram above.

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Bio: Spectre Tech will be out of commission for the next couple years to focus on development. If you like the following examples of what Spectre ... More »
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