We’ve chosen a collection of great articles about data acquisition
projects for the December issue. Among the selection of
top projects are Brad Zdanivsky’s telemetry system, Leonid
Shvarzberg’s prize-winning telemetry module, and Ken Chapman’s
system for monitoring solar panels.
I’m particularly excited to bring you Brad’s article entitled
“Browser-Based Telemetry System” (p. 12). I’m always impressed
by designers whose exceptional projects can inspire readers
to take their applications to the next level. Brad will
definitely inspire you to maximize the potential for your
own telemetry system. What makes this article unique though
is Brad’s ability to inspire on an intellectual and emotional
level as well.
After a car crash left Brad a quadriplegic in 1994, he was
determined to continue achieving his professional and
personal ambitions. An avid rock climber prior to the
accident, Brad demonstrated intense dedication and strength—both
mental and physical—pursuing his goal to get back on the
face of a mountain. He works with a team of friends, family
members, and colleagues on the Vertical Challenge project
developing specialized rock-climbing equipment for quadriplegics,
which he uses himself.
In his article, Brad outlines the telemetry system he designed
to monitor his health stats and send data back down to
the ground crew and spectators. Using Java, he built the
system with pressure sensors from AAG Electronica and
Intersema Sensoric, a TStik module from Systronix, and
an eTrex GPS device from Garmin. The end product is an
inexpensive system that accurately monitors heart rate,
blood pressure, and temperature.
Part of what Brad set out to prove is that a quadriplegic or
anyone else with a physical restriction can be an athlete
and achieve high goals. It’s a compelling idea. It made
me consider the wisdom of the maxim that we’re only limited
by our creativity. Brad’s message is refreshing and his
success is inspiring. His project is well designed and
useful to boot. I’m glad we were able to bring you this
project along with a healthy dose of optimism.
I’m also excited to present Leonid’s article about his prize-winning
project from the 2004 Freescale Wireless Design Challenge
(p. 32). Leonid’s downlink telemetry system collects data
about an RC helicopter and transmits it wirelessly via
a ZigBee link to a laptop. Leonid uses the altitude and
flight direction data to enhance his control over his
Raptor. The expandable MC1392-based system is suitable
for a variety of applications.
Ken Chapman’s multiprocessor system, which he designed to monitor
solar panels, is also versatile enough to be adapted for
a host of other applications (p. 62). When installing
solar panels on his home in England, Ken was keen to evaluate
just how effective they were at generating power and saving
him money. Anyone curious about the feasibility of using
solar energy in an area known for cloudy skies will surely
find Ken’s results interesting.
I hope you enjoy these articles as well as the others we’ve
selected. I’d love to hear how they (or any other project
we’ve featured, for that matter) have inspired you.

jennifer.huber@circuitcellar.com