Sagar
I'm not sure all of the goals, but to a degree this is re-inventing the wheel. Why not a simple "magazine" for the empties that drops them between two large rollers that will crush the can to your desired thickness depending on the gap? If you need to count, a simple switch that trips when each can passes through the magazine or count the number of cans crushed in each rotation? Dangerous? perhaps, but that is kind of how the recyclers will crush the cans for transport.
BTW, you can crush them smaller if you don't think of squashing them end to end where they are designed to resist crushing. Crush them from the sides and it will work much better.
I'm not sure all of the goals, but to a degree this is re-inventing the wheel. Why not a simple "magazine" for the empties that drops them between two large rollers that will crush the can to your desired thickness depending on the gap? If you need to count, a simple switch that trips when each can passes through the magazine or count the number of cans crushed in each rotation? Dangerous? perhaps, but that is kind of how the recyclers will crush the cans for transport.
BTW, you can crush them smaller if you don't think of squashing them end to end where they are designed to resist crushing. Crush them from the sides and it will work much better.
I am suggesting that the power source should be "green". Solar, water, and/or wind powered. Get real exotic. Design and build a machine to distill your own fuel like ethanol from commonly found, yet appropriately picked, plants. Use that fuel to power the crusher. See what kind of power you can generate, and design the back end can crusher that works within that power budget.