Step 3: Preparing the Camera - part 1
Many thanks to smb and his instructable http://www.instructables.com/id/Hacking-A-Keychain-Digital-Camera-for-Arduino-Cont/ on his discovery of the hidden screw that you need to remove to open up the case of the keychain camera that we are using.
Since we know where the screw is, you can use a Dremel tool or a sharp knife to remove the material just above the screw. Once it is exposed, you can remove it and the case easily.
After the case has been removed, unsolder the piezoelectric buzzer from the back. This buzzer is pictured in the second photo below.
The third photo shows the location of the two switches that we will later remove and the location of the voltage regulator that will be used to power the PIR module and microcontroller.