David writes in – How-to sort a 1 pound grab-bag of small electronic components. I sort through one of the $1 grab-bags I purchased at the Austin Summer fest 2007 HAM meet up. The reason these grab-bags are cheap is that you have to do a lot of work to make the collection of parts […]
FrankG writes in with the latest on his Tricumbent hybrid – This is the third installment of the Electric Recumbent trike project that started back in mid March of this year. On this page there is major reworking of the frame, adding the electronics and drive train with some basic testing. Tricumbent hybrid –Link.
Dan has a cool low cost Arduino based galvanostat/potentiostat, he writes – What? The Ardustat is my open source successor to Jonny Galvo. It uses a standard USB-Arduino unit with a custom designed daughterboard to provide: * A galvanostat with a current range from .1 µA to 10 mA * A potentiostat with a potential […]
Bookburn writes – “A what?” you ask. An “electromechanical transducer” refers to the type of speakers we are most familiar with; a permanent magnet and an electromagnet wildly vibrating to produce sound. And by “polystyrene conical section” I mean plastic cup. Whatever this is, it is not an Instructable on how to callously rip apart […]
Here’s a handy resistor value chart from our article Voltage, Current, and Resistance in MAKE volume 10….Voltage, current, and resistance are three staple quantities you’ll encounter with anything that has electrons running through it. Here’s how they all tie together- Link. Subscribers–read this article now in your digital edition – Link.
This one is for all the folks in the MAKE Flickr photo group, Flickr has a new upload screen, a lot better, with batch operations too! – Link.
Good science these are some nice tattoos! – [via] Link.
