Printable Coin Mech 02 Free 3D print model

cgtrader

For months now, I've yearned to build my own DIY pop machine. Now that I've gained access to affordable and rapid prototyping, it's time to revisit this project and see if I can successfully print a coin mech and a mechanism to dispense cans of soda, while wiring everything together with an arduino and housing it in a wooden box.To that end, here's my initial attempt at creating a printable coin mech, inspired by this video:http://www.youtube.com/watch?v=85C4eh0mEJgIf you're interested in collaborating on this project, the repository is available here:https://github.com/iworkinpixels/Printable-Coin-MechTODO:-1. Coin return: The cradles need to be attached to a hinge and a coin return lever must open up the coin mech when pushed, particularly because if the mech rejects an irregular coin or a slug, it will usually do so by getting stuck in the mech, and we need a way for users to clear the mech quickly to prevent DoS attacks. :)2. Failsafe: If the machine is off, a lever that's normally held out of the way by an electromagnet should be released and push the coin mech open.3. Switches: Each backside of every coin chute must have a mounting point for a switch.- Storage: Every denomination of coin must fall into its own coin tube.- Rejection of large objects: At the very top of the mech, coins that are larger than a quarter should be automatically rejected; this might simply involve making the coin slot at the outside of the machine just small enough to accept a quarter.6. Escrow: Although it's not essential, it'd be nice if the coins placed in the machine were held in escrow until a soda is dispensed and returned if the user presses the coin return button.UPDATE 9/16/12: IT VERKS!!!My first test rig has been printed, and (when I use fake force instead of actual counterweights) it works! Now all that's needed is adding some real counterweights and switches to make this project a success.Instructions1. Print one coin mech top, one coin mech bottom, and one set of coin mech cradles.2. Each cradle must be sized from largest at the top of the mech to smallest at the bottom so quarters fall into place first, followed by nickels then pennies, and finally dimes.3. Line up each hole, pass a rod through the mech bottom, cradle, and mech top. The rod should fit just tightly enough that the cradle spins freely but holds firm with necessary washers for the test rig.4. Each cradle needs a small counterweight attached to the underside so it springs back to its original position after dispensing the coin into the chute.