Something I want to learn to do…

On Human Manure

On Human Manure

The above graphic is from a book that does not stink: The Humanure Handbook. Here’s a pdf version of this potential soution to water overuse. As author Joseph Jenkins notes, “a single person using a Clivus (pronounced Clee-vus) Multrum [specific type of composting toilet] will produce 40 kg (88 lbs) of compost per year while […]

Wiremap by Albert Hwang

I met Albert Hwang at The Last HOPE a few weeks back and was able to check out his latest work called the Wiremap. It’s a really ingenious way to display 3 dimensional images onto a series of suspended strings. The graphics are controlled via Processing and projected from a standard LCD projector. If you […]

Hot PCB lasering action

From the MAKE Flickr photo pool Macetech shares some fast action footage from his PCB fabbing process – This is a video running at 4X speed, illustrating the etching process I’m using. The paint is removed from the copper-clad PCB in an Epilog laser cutter. After a wipedown with alcohol to remove any paint dust, […]

HOW TO – make piezo crystals at home

HOW TO – make piezo crystals at home

Piezoelectric crystals are fascinating – when physical stress is applied, these materials produce a voltage. The effect can be reversed as well, apply electricity, produce a stress/vibration. Rochelle salt(potassium sodium tartrate) is an easily synthesized piezoelectric substance you can make with readily available items – 500 g (1 lb) of baking soda (sodium bicarbonate)[NaHCO3] 200 […]