METRO 2033 mechanical charger- fully functional

thingiverse

Here I created fully functional mechanical chargers from the game Metro 2033 (the entire trilogy, actually). Every part can be printed on a standard 200x200mm printer in ABS or another plastic material (I used ABS). Additionally, you'll need some other parts like bearings, NEMA17 stepper motors, and two shafts with an 8mm diameter (check the pictures for details). I didn't measure the voltage output, but I believe it's somewhere between 7-12 volts at its peak. If you're interested in using this energy to power a flashlight or even charge your phone, take a look at the circuit I used for my wind turbine: https://www.thingiverse.com/thing:3138588 Additional parts list: 3x 608zz ball bearings (skater bearings) 1x Pull starter 14mm hex one way bearing, 8mm shaft NEMA17 stepper motor M3 screws, various sizes x7 You'll also need two shafts that you can make from an 8mm linear rod for a 3D printer by cutting it with a Dremel or even a metal file. They're quite easy to make. It's highly recommended that you have super glue and some wire with a diameter of 1-1.7mm for reinforcement of the spring and barrel connection. The bracket connecting the generator with the mechanism is printed in two parts, which are later glued together. On one part of the bracket, there's a support that you remove after printing. All parts also have pads designed to keep them in place if they're printed in ABS. These should be cut off after printing; they add an extra 20 minutes to the whole printing process but will ensure your parts come out nicely from the printer. I didn't design a place for an analog voltmeter as in the original model, simply because I'm leaving it up to the imagination of people who will print this to figure out how and if they'll put one there (and I believe it's also unnecessary :D). Charger in action: https://www.youtube.com/watch?v=8zk7IVHSvHQ Mechanism principle: https://www.youtube.com/watch?v=lKog973s8js DISCLAIMER: This is surely not the most efficient way to produce electric energy, as you'll see. However, it's certainly very cool. I didn't model this to be an exact replica of the original game, but I had to adjust a few parts to make them 3D printable. I'm not claiming ownership of the Metro2033, Metro Last Light, or Metro Exodus brands. All logos, names, etc. belong to their rightful owners. This charger is nothing but a mechanical assembly inspired by models from the game.