This techblog features interesting and technical diy do it yourself, homemade engineering and how to projects featuring coilguns, railguns, 3d printing and robotics.

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Category: electric

Rechargable LED Bottle Light

Let me show you how to build a LED string light inside a bottle which has a little twist to it! You will find the

August 22, 2016 battery / diy / electric / homemade / howto / tutorial / wood

USB LED indicator Power Bank from Laptop Battery

A situation many can relate to: an empty smartphone battery and no outlet around! That’s exactly why I recycled an old laptop battery into an

January 3, 2016 automated / dangerous / diy / electric / electronic / firecracker / homemade

Automated Firecracker Slingshot

Who doesn’t like celebrating new years eve with firecrackers?! But no more numb thumbs from fumbling around with a silly lighter in the cold –

February 22, 2012 diy / electric / farnell.com / Rotating disk

Simple Rotating Plate

Sometimes you would need a simple rotating plate for various applications but you don’t want to install a lot of sensors and transistors. Well, here’s

December 22, 2011 2kV / diy / electric / farnell.com / transformer

Simple 2000 Volts Transformer – Electrostatic Sticky Notes

In this post I will show you how to build a nice and useful transformer on your own! Best thing it’s not expensive at all!

October 20, 2011 bycicle / diy / electric / electric bicycle

Electric Bycicle

Since public transportation is very expensive in Munich ( about 100€/month ) and driving a car is not an option due to traffic jams I

Homemade Railgun Experiment