Earthquake detector could have helped during quakepocalypse

[Andrea] built a seismic wave detector that warns of a possible impending earthquake. Because P waves travel much faster than the “make everything shake” S waves, building a device that detects P waves serves as an early warning system that alerts building occupants to go under a door frame. [Andrea]‘s build detects these fast-moving P waves and only took an … Read the rest

Chinese hackerspaces, or, what happens when a government is run by engineers

Government leadership in Shanghai wants to build 100 community hackerspaces funded by the Chinese government. Each space will be at least 100 square meters, open 200 days a year, and come equipped with wood and metal lathes, saws, drills, grinders, mills, and more electronics than we can imagine.

The official government statement (translated here) says the Shanghai Science … Read the rest

Kitchen Hacks: Improving an espresso machine

The heat sensor in [Cameron]‘s espresso machine doesn’t work very well. He sees some pretty crazy variations in temperature when pulling an espresso shot, and when the boiler is just sitting there the heater element will heat the water full-bore then shut off for a while. Since this is a pretty low bar from a control theory standpoint, [Cameron] decided … Read the rest

Star Trek style pneumatic doors that don’t require a stagehand

In 1966, [Gene Roddenberry] introduced fully manual doors powered by a stagehand on Star Trek. The fwoosh sound of the door was later dubbed into each show, but progress marches on, and now [Alex] created his own Star Trek-style automatic doors for his house.

The build includes a ‘control panel’, and [Alex]‘s door operates in three modes: Open, and … Read the rest

Adorable and small portable NES

The Queen of Bondo is back again, this time with an adorably small NES portable, the HandyNES.

When last saw [lovablechevy], she had just finished up her build of a Nintenduo, a build that stuffed an NES and SNES into a single box. The Nintenduo was such a clean build it would be a crime to let her … Read the rest

Two ways to convert an electric cooler to a humidor

It’s not a proper humidor in the technical sense (there isn’t any specific way to moderate the humidity) but [Dzzie] came up with a couple of ways to keep his cigars cool in the summer heat.

Both versions use a Coleman electric cooler as the enclosure. This hardware uses a Peltier device to keep it cool inside. The first attempt … Read the rest