Technology

Here’s a cheap plotter for graphs, PCBs and masks for etching metal plates, thanks Alex – Link & translated site.

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 […]

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 […]

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.