{"id":94,"date":"2014-07-10T01:32:21","date_gmt":"2014-07-10T01:32:21","guid":{"rendered":"http:\/\/3d.rayharwood.com\/?p=94"},"modified":"2015-06-24T14:02:05","modified_gmt":"2015-06-24T14:02:05","slug":"coins-worth-coming-together","status":"publish","type":"post","link":"https:\/\/3d.rayharwood.com\/?p=94","title":{"rendered":"Coins-Worth is coming together!"},"content":{"rendered":"

The current iteration of the Coins-Worth <\/a>device version 2 is now about 50% together. Here’s a sneak peak at the end of week iteration 7\/3\/14.<\/p>\n

\"Coins-Worth<\/a>

Coins-Worth Version 2, stacking and scanning stations combined<\/p><\/div>\n

Taken from above, there are two tall walls that support the smaller functional components.\u00a0\u00a0I refer to the\u00a0left half of this piece as the “stacking station”, since this is where unprocessed coins are stacked.\u00a0 There is a smooth bottom plate,\u00a0a tube support just above the plate, and sandwiched in between is a coin ejector.\u00a0 A portion of the coin ejector protrudes through the visible slot in the bottom plate, and is actuated (pushed back and forth) by a small servo just underneath the station.<\/p>\n

The right half of this piece is the “scanner station”, since this is where the camera takes a picture of the coin.\u00a0 (Technically, not “scanning”, but the name has stuck, so I use it!)\u00a0 Note the coin sits at a 25 degree angle, and the leading edge rests on a small U-shaped piece I call the coin catch.\u00a0 The dark object on the right is a small Logitech USB camera,\u00a0centered 2 inches above and at right angles to the coin.\u00a0 Not visible is a small hole just under the leading edge of the coin, in which a small servo-actuated rod is used to quickly flip the coin.\u00a0 (Coins don’t always fall heads-up, do they?)\u00a0 This allows the camera to take pictures of the front and back of the coin.\u00a0 After the pictures have been taken, the coin catch is raised slightly, and the 25 degree angle of the scanner station allows the coin to be gravity fed to the sorting station which will start just underneath the scanner station.<\/p>\n

The design for the sorting station is nearly done, and I’m just now putting the design into FreeCAD.\u00a0 The sorting station will have a chute which will direct the coins to the appropriate bin, which as a minimum includes:<\/p>\n