3D print

A simple temperature control system

A simple temperature control system (for 3D print or other constant temperature control purpose)

[Note: if you are using smartphone or portable device to browser this post, some math formula might not appear properly. To see the math in correct form, scroll down to the bottom and click “View web version“]   After finishing the mini CNC laser engraver, the next thing in my mind is 3D printer. One […]

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3D PRINT A COLOUR TV

3D PRINT A COLOUR TV

The oldest form of television used a spinning disk with a progression of holes — a Nipkow disk — to slice the image into lines for display. They’re surprisingly simple machines and capable of unexpectedly high-quality images despite their relatively low resolution. Even better, in an age of microcontrollers and bright LEDs, making one that

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