Bathroom fan that switches itself on when it gets steamy or smelly

At first we thought that [Brandon Dunson] was writing in to tell us he’s too lazy to fix his bathroom fan. What he really meant is that simply replacing the unit isn’t nearly enough fun. Instead, he developed his own bathroom fan trigger based on stinky or humid air conditions. He didn’t publish a post about the project but we’ve … Read the rest

Engine Hacks – A DIY Methane Generator

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All “methane generator” jokes aside, This one actually serves a useful purpose. Although not an engine hack per se, methane can be used to run an engine. As the traditional method of powering an internal combustion engine, gasoline, gets more and more expensive, alternatives will have to be found. If you happen to live on a farm, or have access … Read the rest

Composting to create hot water

Want nature to supply you with 130-150 degree hot water? [Onestraw] shows you how to get just that by building a compost heap that heats water. Finding himself the proud owner of a dump truck of green wood chips [Onestraw] went about building his own version of Jean Pain’s thermal compost pile. The idea is to produce and … Read the rest

Twittering toots, a chair’s perspective

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We might have to add a category of “stuff made to twitter”. The latest installment is an office chair that twitters whenever it gets farted on. The author has a smart sounding description as to why he decided to make this, and he has a pretty good point about twittering interrupting the things you’re twittering about, but it all … Read the rest