I found an old broken bicycle flashlight and I immediately took it apart to try and see if there was any obvious reason for why it wasn't working. From the looks of it the PCB was probably water damaged so I decided to upgrade the flashlight a bit with two 1W led's and make a super bright flashligh...
By: juaspo
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from Instructables: exploring - technology - robots http://ift.tt/1MqXoDW
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