3D Printed Easter Egg 2017

For Easter 2017 I designed and printed half a dozen Easter Eggs. These eggs were designed to be printed on my new 3D printer with a single extruder. I printed one full egg in six different color and then swapped the layers to create the multi colored eggs. The eggs were then glued together after final assembly using superglue and scrap lengths of filament.

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Tronxy P802M – Thumb Screws

Bend leveling on a 3D printer is an important thing and the adjustment should be as easy for the user as possible. The wing nuts that came with the Tronxy Prusa i3 P802MA are terrible; they are too small and difficult to use. To solve this problem and to start off my modifications for my Tronxy printer I turned a set of four brass thumb screws.

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DC-DC Converter Effeciency

I aquired a car USB charger in need of repair and was inspired by a recent video from the EEVBlog to measure the power efficiency. The device become damaged when the insides flew out during insertion into the 12VDC car jack and the inductor was nearly sheared off the PCB. I was able to reinstall the inductor and slightly modified the circuit for easy measurements and connection to my DC electronic load.

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Single LED Joule Thief Candle

…the thief said “Let there be light. Behold a single candle lit by the joules of a dead cell.”

There is something about LEDs and the joule thief circuit that keeps me coming back. This time around I went for something festive for the December holiday season along with a SMD transformer, no longer will I have to hand wind toroidal transformers.

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