Two buttons mounted below the display control setting the clock, triggering
an 'event save', displaying and erasing
the saved data. As the menu is
accessed, the button definitions are
printed on line 2, above each button.
If you would like more information, I
can be reached at firstname.lastname@example.org
■ Dennis Hewett, Frontenac, KS
might be a PDA or "palm-top" computer.
It would have the added advantages of
storing a long list of timestamps, and
even allowing easy downloading into a
computer. It would also allow relatively
easy addition of other features such as
recording the nature, identity, etc., of the
■ Richard Crowley, Hillsboro, OR
sounds like you're
using a wireless link
camera, so moving, replacing, or modifying the transmit and/or receive antennas
or their locations would be the first thing
to try. Storing and re-inserting stored
video into your video stream is a complex and expensive process.
■ M. Byrnes, Fairfax, VA
#2 May I suggest a laptop computer?
It has a built-in 24 hour clock and can
record date, as well as time. You can
pick up a used laptop at a yard sale for
$5 or $10 that will do the job. There is a
GWBASIC program that runs in DOS to
record date, time, and comments. You
can download GWBASIC from my website: www.geocities.com/russlk You may
want to find someone to write a more
elegant program, but this one illustrates
what can be done.
■ Russell Kincaid, Milford, NH
#3 A very easy, off-the-shelf solution
[#09051 - September 2005]
I need to take an input of a standard
NTSC base band video signal and clean
up glitches. I have a client with several
amusement rides that use wireless
transmitters to send video of the passengers to be recorded to a VCR. During
certain portions of the ride, we get some
signal drop out, usually a fraction of a
#1 Your best bet would be to correct
the reason for the dropouts rather than
attempt to store and then re-insert corrected video into the final recording. It
#2 What is needed is a Time Base
Corrector. The wireless transmitter to
the VCR is losing its carrier which, inturn, causes a sync break on the VCR.
Most consumer VCRs, and even many
professional VCRs, do not have built-in
TBCs. The TBC will basically keep the
sync signal stable while the input video
signal is unstable. Some better TBCs
have frame-store buffers in them, so
worse-case scenario is that when the
wireless transmitted image is interrupted, the video freezes for a second or so
until the video is stable again.
■ Kris Hain, Muskegon, MI
and PICBASIC PRO!
Introducing a Three-Day class of
programming and hardware
experiments designed to quickly
bring you up to speed using PICs
and PICBASIC PRO.
Come knowing nothing.
Leave knowing everything you
need to program PICs.
Coming to San Diego, CA
Oct. 11-13, 2005.
Check our web site for more details.
Each Student Receives:
melabs PICBASIC PRO Compiler
melabs Lab X1 Experiment Board
melabs Serial Programmer
RCG1 Experiment Board
DC, Servo, and Stepper Motors
LM34 and DS1620 Temp Sensors
MAX7219 LED Driver
LED and LCD Displays
Relays and Solenoids
AD8402 Digital Pot
(2) 16F877 PIC Micros
PIC Workshop Course Manual
Phone (800) 442-8272
Innovative Ideas in Electronics Design
PIC and PICBASIC PRO are trademarks or registered trademarks of their respective holders.
Microchip 16F877 and
8 Channel A/D
1 Channel D/A
2 x 16LCD Display
4 Input Sensing Switch
4 Digital Inputs
4 Digital Outputs
WIN 95/98, ME, NT, 2000, XP Manager Software
‘C’ Compiler - Optional
400+ Page Workbook
Lab Manual includes answers to all exercises
Expansion Connector for Wire-wrap and other
Hundreds of Hardware and Software Exercises
Price as low as $125
call toll free 1-800-319-3599
November 2005 NUTS & VOLTS 93