It’s amazing to think that planetary gears, also known as epicyclic gears, were invented by the Greeks more than 2,000 years ago. As the name implies, a central gear, called the sun gear, engages a series of planetary gears that orbit the sun. This whole assembly is then surrounded by a ring gear (the rest of the heavens?). All of the gear types can be controlled separately.
In this 3D Printer Academy video, they print a set of planetary gears and explore what makes the design and application of these gears so impressive and useful.
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Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.