The description of DIY Googly Eyes Minion Clock
This is the Googly Eyes Minion Clock. Its eyes tell the time by spinning the eyeballs in the eye sockets and seeing where the pupil is pointing. The left eye are the hours, right side, the minutes.
you can start with an existing 3D model: Minion. you can increase its size to 200mm, added tiny hemispheres onto the goggles for the hours and minutes, removed the eyeballs, and cut off the back so you can get the workings inside.
The eyeballs are more or less hemispheres. Actually, they started out as hemispheres but then you can squash them down a tiny bit so they had less bulgy appearance. So, technically they're oblate hemispheroids. if you used recycled steppers, and they're not very strong, the eyeballs are about 2mm smaller in diameter to the eye socket. This prevents the eyeball from catching on an edge inside the socket preventing the stepper from rotating them.
here all things you need:
Parts: Stepper motor, qty 2; 24.8mm diameter x 15mm tall, Arduino Uno, Adafruit Motor Shield, Momentary switches, 5v 2A power adapter.
Materials: 3D Filament white or yellow, Gesso, Acrylic paint, Hookup wire.
Tools: 3D printer, Hot glue gun, Emery board, Soldering gun, Paint brushes, Screw drivers, Drill
here the steps:
1. 3D Printing
- Models: Minion, full, edited
This is the complete minion, enlarged to 200mm with face created face groups and removal of its eyes in MeshMixer file format.
- Minion, front
This is the front half of the minion with the back half of its plane cut away in object, 123dx, and stl file formats.
- Eye bracket
This is the eyeball servo bracket. It is sized exactly for the minion that's was increased to 200mm. The provided models are in 123dx and stl file formats.
This is the hemispherical eyeball. Its shaft coupler size assumes there is a pinion gear on the servo shaft. The provided models are in 123dx and stl file formats.
- Slicer Settings
Both the minion body and the eyeball have overhangs. This requires that supports be added.
The hardware aspect is trivial. Atop of an Arduino Uno sits an Adafruit motor shield. Connected to the shield are 2 servos, one for the hours eye and one for the minutes eye. There are 3 buttons, one to set the hours eye, one to set the minutes eye, and one to make the eyes go all googly! Each eye will randomly either rotate forward or backward at full speed. Press the button enough times and you'll go through all the possibilities.
The code is pretty simple to understand. Timers are used to indicate when to step forward an eye. For the hours eye, its after 900 secs, and 75 secs for the minutes eye. As you will notice, the clock will not be precise to the second. It won't even be precise to the minute. But it should suffice for a novelty clock.
you can use any kind of paint to get the lines cleaner and make it more cute and perfect.
Attach the eyes onto the stepper pinion gear, Clear out the inside of the minion, The steppers go into the eye bracket, The eye bracket goes into the minion and glued down, Drill a hole for the power adapter cable, Feed the cable into the minion, Connect all the wires as per the diagram, Finally, put a piece of felt on the back to cover up the hole.
for further information, download this now and grab what you want.
please enjoy this DIY Googly Eyes Minion Clock tutorial and give us any feedback.