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Building a device that clips to your belt and tracks how much time you spend inside and outside

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Step 9: Add Battery Pack

Picture of Add Battery Pack
The only complaint I have with the Arduino case is that it does not offer an easy way to place a battery.  We could simply place a battery in the back of the case itself but we would have to secure it to the case somehow.  The plastic 9V case we have fits perfectly within the internal pins of the case, allowing us to simply place it into the bottom shell.  We run the barrel connector and wiring up along the side with the accelerometer to allow us to plug the batter into the Arduino at a later time.
 
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