Gun looking Dynamo

This is a manual driven dynamo, made with 3D printing. The outershell is shaped like a gun, and the trigger acts like a toothrack that makes the cogwheels and motor spin,
It consist of 5 different parts (the big double-cog wheel is used 3 times in the design)
Besides the 3Dprinted parts we used a series of electronic components in order to make both a joule thief, aswell as a rectifier. For this you will need the following:

• Transistor of type npn (2N3904 or similar)
• Resistor (1kOhm)
• Toroid (Can be salvaged from a CLF bulb)
• 26 gauge wire
• 4 standard diodes
• Breadboard