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USB Bike Generator

USB Bike Generator

DBC writes – The USB Bike Generator is a small bike mounted electricity producing device optimized to provide power for two USB ports. There are so many small electronics that can be powered or charged from a USB connection it only makes since that people might want to do this while riding a bike. The […]

How-To: Two string paddle bass

How-To: Two string paddle bass

Instructables user st.paul writes: This bass is made from a wooden boat paddle, a piezo buzzer, weed eater strings and a few other odds and ends. For what it is and how little it costs (20-25 dollars with all new parts), the quality of sound is unbelievable. If you’re thinking about taking up bass or […]

How-To: Indoor bike parking

How-To: Indoor bike parking

Check out Instructables user lamoix’s indoor bike rack for his Portand bike-lover’s palace. Like most houses in Portland, we have a lot of bicycles, and we are always coming and going on them, often changing out bikes several times a day. Not satisfied with outdoor parking, or stacks of bicycles in the workshop, I decided […]

Controlled mushroom habitat with Arduino

Controlled mushroom habitat with Arduino

Instructables user anthony_p1234 writes: This is my first Arduino project aimed at helping me with my other hobby which is growing oyster and shiitake mushrooms indoors. In a nutshell, the controller takes in two temperature readings, 1 Humidity reading and 1 Co2 reading and triggers a set of four relays connected to mains power. Intended […]

Massive printable “Tree of Life” graphic for free download

Massive printable “Tree of Life” graphic for free download

This tree is from an analysis of small subunit rRNA sequences sampled
from about 3,000 species from throughout the Tree of Life. The species were chosen based on their availability, but we attempted to include most of the major groups, sampled
very roughly in proportion to the number of known species in each group (although many
groups remain over- or under-represented). The number of species represented is approximately the square-root of the number of species thought to exist on Earth
(i.e., three thousand out of an estimated nine million species), or about 0.18% of the 1.7 million species that have been formally described and named.