Year: 2005

The Solar Powered Coffee Roaster

The Solar Powered Coffee Roaster

SolarbeanSaul sent this along from David Hartkop, a Solar coffee roaster inventor – “My brother Mike is a ‘classically trained’ coffee roaster, and I invented a solar-powered coffee roaster for him. We’ve been selling coffee online for a year at solarroast.com and I’m designing a bigger machine to build in the garage in Oregon for this summer. It concentrates 4.5 KW of solar thermal energy on a fully sunny day, and is manually trackable 360 degrees azimuth and 90 degrees zenith. The motors of the roaster are powered by photovoltaics, and he can crank out around 7 lb of coffee an hour. (in 2 lb batches).” Check out this awesome photo of the solar roaster!

Using an Oscilloscope

Using an Oscilloscope

Osc1Ever wonder what an Oscilloscope is? Or how to use one? Here’s a good guide on getting starting “An oscilloscope is easily the most useful instrument available for testing circuits because it allows you to see the signals at different points in the circuit. The best way of investigating an electronic system is to monitor signals at the input and output of each system block, checking that each block is operating as expected and is correctly linked to the next. With a little practice, you will be able to find and correct faults quickly and accurately.” Link.

Make a “book wall hanging”

Make a “book wall hanging”

WallGreat Instructable on making your own book wall hanging. I saw this in person a couple weeks ago, and I’m making a few as gifts for the holidays! – “Take one of the many beautiful books available at project Gutenberg and convert it into a wall sized readable book. Makes great gifts for the literary types in your life. This is the complete text of Flatlands, and how to generate and print it, at 60 x 42 inches. That’s huge! Take a look at the PDF.” Link.

Building a marble shooting airgun

Building a marble shooting airgun

Barrel EndInteresting page documenting a homemade air rifle (also check out the potato cannon) – “Air guns are normally small air powered rifles that shoot relatively small projectiles, primarily used for target practice. Usually, they are pumped up with an internal cylinder, activated by hinging the barrel towards the stock. My home made air guns experiments however take their lineage more from potato gun technology than target practice rifles.” [via] Link.

HOW TO – Use MSS for easier music transfer from iTunes

HOW TO – Use MSS for easier music transfer from iTunes

Mss2“Getting music to your Symbian phone is not as easy as it should be… If you are using a Nokia phone you may be able to use the Nokia Music Manager (which is part of PC Suite). This How-To shows you how Mass Storage Synchronizer can be used to copy music from iTunes to a memory card (which you can then put in your phone). This does not syncronize iTunes with the phone, it copies music from the PC (iTunes library) to a memory card in a USB memory card reader. ” Thanks Ewan! Link.

As seen in MAKE! Fiberglass New Hope C-3PO Star Wars Prop

As seen in MAKE! Fiberglass New Hope C-3PO Star Wars Prop

02The C-3PO from MAKE 02 is for sale on eBay “This item is a full size replica of C-3PO from Star Wars “A New Hope”. No home is complete without your very own protocol droid. He stands on his own, his eyes light up and there is a speaker in the head for a sound system that the winning bidder could add (sound system not included). The head is moveable from left to right (by hand, not motorized). This c-3po was on the cover of Make Magazine’s second issue. This item has taken me 3 years to bring to the point it is now. He is very near completion and only needs a few details. I make no claims to its accuracy, but rather its a best guess.” [via] Link.