Build you own metal detector
Here’s a pretty simple and fun metal detector you can make. It’s a BFO (beat frequency oscillator) – when metal is detected it changes the sound coming out from the speaker. [via] Link.
Science
DIY science is the perfect way to use your creative skills and learn something new. With the right supplies, some determination, and a curious mind, you can create amazing experiments that open up a whole world of possibilities. At home-made laboratories or tech workshops, makers from all backgrounds can explore new ideas by finding ways to study their environment in novel ways – allowing them to make breathtaking discoveries!
Make stuff float, with the magnetic levitation kit
This looks like a pretty fun kit – “This simple electronic kit uses magnetic levitation to suspend small objects up to about 1/2 ounce (15 Grams) or so in mid air. The air gap is about 3/8″. The electromagnet dynamically controls the position of the suspended rare earth magnet(s) attached to the levitated object. Feedback […]
$80 Tank / robotics platform – from Walmart
Geminicricket sent us in this $80 RF tank found at Walmart that seems like it would make an excellent supply of parts to procure from – “I was in Walmart today and saw a great deal that’ll be loads of fun and might be exceptionally useful to someone with more skill in electronics than I. […]
Atmospheric ‘sprites’ captured…
Article on New Scientist and video of electric jellyfish from the clouds – “Mysterious flashes of light called “sprites”, that occur above thunderclouds during powerful storms, have been captured on film in unprecedented detail by researchers using an ultra-high-speed camera.” [via] Link.
6,500-year-old voices recorded in pottery (just a hoax)
THE RAW FEED has a post about audio that was recorded in pottery – “Belgian researchers have been able to use computer scans of the grooves in 6,500-year-old pottery to extract sounds — including talking and laughter — made by the vibrations of the tools used to make the pottery.” [via] Link (the site and […]
Podcast from Ham radio operators…
SolderSmoke – a continuing discussion between a couple of ham radio operators about all things electronic and geeky. We have been meeting on Echolink for some time now to discuss what was on our Workbenches and to kick design ideas around for new electronic projects. This Week: SuitSat. Jupiter’s moons. Back yard telescopes. Trip to […]
Powering LEDs costs mere pennies
Matthew writes – “Lately the hoopla concerning LED lighting has been overwhelming. Everyone claims this costs mere pennies to power. I decided to put a new twist on a classic science experiment to prove that LEDs do cost pennies to power. Literally.” This is a great how to on making a battery to power a […]
