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3D model description

This is an updated version of my other Card mover.
Changes:
-Added hinge to align the cards.
-Hinge auto-opens when HID Reader turns for eject.
-Stands contain holes for Arduino Nano holder and Stepper Driver
-Speedup of Slide by changing the ratio (we need more theeth :))
-Redesign Foot to keep all units in one to enable more stable design
-Added more holes to attach other things
-Redesigned the Card-Reservoir. can be stacked now if more than 50 cards are needed.

Hint: to attach the HID-Holder to the Servo, I had best success when heating up the Holder-Hole.
Then Push-fit the Holder to the servo and wait (when aligned) until it cools down. Finally attach the center screw, if the fit is tight but doesn't slip.
This can be repeated until you have good success.
It also makes sense to warm-up the SG90 holder clamps to prevent them from breaking.

The cable can be hot-melted into the guide on the bottom.
HID Reader USB cable should be Strap-tied to the HID-Holder, to allow the mechanics not block.
Make sure that the cards snuggle out, before you mount everything together.

Hint: you can mount the Stand in one of 4 directions, to allow fitting your wiring esthetics.

This one is working quite good!
Don't forget to print the weight for the last cards in the stock to slip out without sticking.

The Arduino Nano Sourcecode I will not share.

Parts needed:
-Arduino Nano (or processor of your choice and means to program it)
-28BYJ-48 Stepper Motor (you can also use other Ratio than -48. Less number gives faster eject)
-SG90 Servo
-HID5422 Reader
-Screws, HotMelt

Please comment, if you think ejecting with SG90 Servo makes sense for you.

  • 3D file format: STL and ZIP
  • Publication date: 2019/11/18 at 16:46

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