Posts with the tag "technology"
Youtube user asciimation created a record player that runs on steam.
This is a small steam engine I made, mainly from bits of junk around my garage, playing a Sex Pistols punk LP. The engine speed is controlled by a throttle being driven from a servo controlled by an Arduino. The RPMs are measured by a coil detecting the passing of six magnets in the edge of the platter and the approximate revs are displayed on an analogue meter. I am using the PID controller library to do the work out how to control the servo based on the input speed. The safety valve is making the whistling noise at the start as steam pressure is built up. A small flick of the platter will start the engine and then the Arduino takes over trying to maintain 33 1/3 RPM. At the end the meths burner runs out of fuel so the steam pressure, and therefore the speed, drops. You can see the Arduino trying to throttle up to maintain the speed right at the end.
Read more about the project at asciimation’s blog.
Image via NASA
Picture this: You hit the snooze button on your alarm one too many times and just woke up in your London flat. You look over and let out a scream because you just realized you have a business meeting in New York in an hour and a half!
No worries, Australian defense scientists and the U.S. Air Force are on it. They’re testing a hypersonic airplane that travels at 5840 km per hour, or around 3,629 mph for the anti-metric types. That would cut the travel time from New York to London down to under one hour.
Unless you’ve been living on another planet, you’re familiar with Michael Jordan and his basketball legacy.
The Chicago Bulls legend and NBA Hall of Fame inductee has six NBA championships, five MVP awards, and an Olympic gold medal. Jordan has never received one of the greatest honors in geekdom. He’s never been featured on the cover of a single video game.
Now, that’s all set to change, according to Estee Portnoy, his business manager.
Today, Apple CEO Steve Jobs debuted the new iPhone 4G, making iPhone users and wannabee iPhone users excited until it’s released later this month.
(Of course, Apple was scooped this morning by Gizmodo six months ago. But we digress . . .)
Before people get too excited over the new smartphone, there are some questions that need to be addressed.