Lighting Up the Season — Again!
by Jon Williams
in The Spin Zone
I like this time of year. The air is clear (even in Los Angeles!), the
mornings are crisp, and the evenings are brightened with holiday
decorations that illuminate the insides and outsides of homes
everywhere. My home is somewhat small, so my lighting projects are,
too. Small doesn't make me wimpy, though, and my little 12-channel
lighting board for the Propeller Platform is designed to be tough
enough for applications that go way beyond LEDs. Page 0
Q&A
by Russell Kincaid
in Q&A
Attic fan control, seven-segment LED help, a timer project, plus more. Page 24
Oscilloscope Probes and Probing
by Robert Reed
As you start probing higher and higher frequencies, often the results
get increasingly odder. This article addresses the reasons for that
strange behavior. The ultimate solution to the shortcomings of your
10:1 probe is a very expensive Active Probe — but here is one you can
construct for $25. Page 44
A Universal Micro Design
by Fred Eady
in The Design Cycle
When I’m not writing, I’m soldering. With that, I figure most of you
are not looking down the sights of a soldering iron as much as I am.
So, instead of subjecting you to soldering up my SERVO-inspired
experimental micro-SD card interface, I decided to design a simple and
super-low-cost microSD interface card that you can build on your bench.
Page 54
The Canon Hacker Development Kit — Part 2.
by L. Paul Verhage
in Near Space
Last time, this column introduced CHDK and how to load it on a camera’s
SD card. Locking the SD card makes it bootable on a Canon camera and
that allows you to write simple scripts that automate features of
Canons that aren’t otherwise available.This month’s column discusses
the syntax of the uBasic scripting language so you can begin writing
your own scripts.The next article will cover when I gave a NearSys
BalloonSat flight computer control of a Canon camera running a remote
script. Page 68
