Before Lunar New Year, I had ordered two 3000 F, 2.7 V supercapacitors from China for about $4 each. I don’t actually remember why, but they arrived (unexpectedly) just before the holiday.

Hackaday reader [David] was looking for a cheap and easy way to spot weld copper tabs together. As he notes in his writeup, the properties of copper which are most enticing, such as high thermal ...

Creating a DIY spot welding machine can be a rewarding project that combines creativity with practicality. This tutorial will walk you through the steps to build your own spot welder, utilizing simple ...