Techknowledgey
by Jeff Eckert
TechKnowledgey 2010
Topics covered include the fastest graphene transistor, turning your
HDTV into a videophone, a flytrap that eats cesium, plus some other
stuff you’ll find interesting. Page 12
PICAXE Primer
by Ron Hackett
Programming the MAX7219 LED Display Driver
This month, we’ll experiment with three different programs for our
display and one for our 28X1 master processor. First, we’ll try out a
simple program to count from 0 to 9999, and then we’ll throw in a
little “zero-blanking” for good measure. Page 16
Q&A
by Russell Kincaid
Q & A
A cheap strobe, thermometer repair, re-using old transformers, solar light, plus more. Page 22
Open Communication
by Louis E. Frenzel
Shortwave Listening: What it is, how to do it, and what to buy.
Once the vacuum tube came along, radio really took off and stations
sprung up around the world. Even with a simple radio, you could hear
local and far away stations.Today, there are still many of us who like
to do this. The activity is shortwave listening (SWL) and it is both
fun and a challenge. Page 58
