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RGB LED Newtons Cradle

RGB LED Newtons Cradle

“The Newtons pendulum is a device that demonstrates conservation of momentum and energy. A typical Newton’s cradle consists of a series of identically sized metal balls suspended in a metal frame so that they are just touching each other …

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3D Printed Telegraph Key & Sounder

3D Printed Telegraph Key & Sounder

“There are some examples of 3D printed telegraph keys, but never a complete system until now! This instructable contains all the 3D designs for both the telegraph key and sounder. Goals There are some examples of 3D printed telegraph keys …

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