Measuring and drawing lines for the sorting tracks
Soldering the wires for the vibrating hopper system
Sorter subsystem being tested in slow motion
Cutting out the holes out for the sorting system
Using laser cutter to cut out acrylic pieces for coin descent to tracks
After Test 1 strips of acrylic were added to the lower quarter of the holes to ensure the coins only fell into the holes due to their top losing support.
Then coins were falling through the hopper opening together and rolling on top of one another down the tracks blocking them from entering the correct holes while also falling over onto their sides. Acrylic pieces were added between where the coins exit the hopper and the tracks to slow them down, allow less through at a single time, and control their descent.Â
Coins were still moving too fast bumping into one another skewing the results and also falling over. To remedy this fingered plastic was added inside the hopper and a flatter piece of cardboard outside leading into the hopper which moved the coins slower as they were vibrated by the vibrating system. This slowed them down and varied the time in which the coins entered the system.
The coins have much less interaction moving slightly slower and with a more controlled roll resulting in the 100% accuracy shown in the table above.
Test 7 in the table
Completed and modified hopper in action with coin collector at right
Test 8 in the Table