Button Dispenser Automates Maker Faire Show – Hackster Weblog
Should you show at Maker Faires or different conferences, giving out stickers, buttons, or different memorabilia is a good way to assist folks keep in mind you. After all, it takes seconds of your valuable time to both hand out or organize so attendees can simply seize one themselves. This wasn’t “environment friendly” sufficient for me, so I spent numerous hours to design and construct an automatic dispenser robotic.
Whereas “robotic” right here may be a little bit of an exaggeration, the machine does work robotically, dropping a button down a slide when somebody locations a finger contained in the designated space. As an alternative of exterior buttons, one’s finger is picked from under the dispenser’s base utilizing a TTP223B capacitive enter module. The onboard Arduino Uno then begins a sequence the place the underside servo strikes out of place to drop a single button, whereas the highest servo “blade” holds the opposite buttons in place.
This blade-escapement methodology works fairly effectively, and when the button drops, it hits a curve on the backside of the 3D-printed fixture, launching it towards the operator. As seen within the video under, the preliminary intent right here was to make use of a sequence of magnets in the identical type of orientation, although this introduced issues when various buttons had been used.