QEX – May/June 2010
9
Reprinted with permission © ARRL
Development Board with USB, SKU: DEV-
00022;
www.sparkfun.com/commerce/
product_info.php?products_id=22
20
Beginner Electronics, Breadboard and Wire
Kit;
www.beginnerelectronics.com/begin
ner/Products.php
21
Microchip Technology Inc,
PIC18F2420/2520/4420/4520 Data
Sheet: 28/40/44-Pin Enhanced Flash
Microcontrollers with 10-Bit A/D and nano-
watt Technology (document DS39631E),
2008;
www.microchip.com
22
SparkFun Electronics, Adapter board
for Microchip ICD and ICD2;
www.
sparkfun.com/commerce/product_info.
php?products_id=193
23
HVW Technologies, RS-232 Driver Module
— DCE;
www.hvwtech.com/products_
view.asp?ProductID=289
24
SparkFun Electronics, PTC Resettable
Fuse, SKU: COM-08357;
www.spark
fun.com/commerce/product_info.
php?products_id=8357
25
Inland Pro USB Converter USB to PS/2
Keyboard and Mouse, SKU: 919712;
www.
microcenter.com/single_product_results.
phtml?product_id=0230515
26
Cable Club, 6 ft PS/2 Keyboard and Mouse
Interface Cable (Male/Male), part: BC20277-
6;
www.cableclub.com/keyboard-mouse-
interface-cable-malemale-p-797.html
27
Microchip Technology Inc, PICkit 2
Development Programmer/Debugger;
www.microchip.com/stellent/
idcplg?IdcService=SS_GET_PAGE&node
Id=1406&dDocName=en023805
28
CCS, Inc, Compiler Exclusively for Microchip
PIC
®
MCUs,
www.ccsinfo.com/content.
php?page=compilers
29
Microchip Technology Inc, MPLAB
Integrated Development Environment;
www.microchip.com/stellent/
idcplg?IdcService=SS_GET_PAGE&nod
eId=1406&dDocName=en019469&part=S
W007002
30
CCS, Inc, PCH Command-line Compiler
for PIC18 MCU parts;
www.ccsinfo.
com/product_info.php?cPath=Store_
Software&products_id=PCH_full
31
Benson, David, C
What Happens, Using
PIC
®
Microcontrollers and the CCS
C
Compiler
, Hayden, Idaho; Square 1
Electronics, 2008;
www.sq-1.com/cwhtoc.
html
32
Chuck Hellebuyck,
Beginner’s Guide To
Embedded
C
Programming: Using the
PIC
®
Microcontroller and the HITECH
PICC-Lite
TM
C
Compiler
, Milford, Michigan;
Electronic Products, 2008, ISBN: 978-
1438231594;
www.elproducts.com/
embeddedcbook.htm
33
Martin P Bates,
Programming 8-bit PIC
Microcontrollers in
C
: with Interactive
Hardware Simulation
, Oxford, UK: Newnes
Press, 2008; ISBN: 9780750689601
34
Chuck Hellebuyck,
Beginner’s Guide to
Embedded
C
Programming — Volume
2: Timers, Interrupts, Communication,
Displays and More
, Milford, Michigan:
Electronic Products, 2009; ISBN: 978-
1448628148,
www.elproducts.com/
embeddedcbook2.htm
35
Dogan Ibrahim,
Advanced PIC
Microcontroller Projects in
C
: From USB
to RTOS with the PIC 18F Series
, Oxford,
UK: Newnes Press, 2008; ISBN: 978-
0750686112
36
Richard H. Barnett, Sarah Cox, Larry
O’Cull,
Embedded
C
Programming and
the Microchip PIC
, Clifton Park, New
York: Delmar Learning, 2004; ISBN: 978-
1401837488
37
Nuts & Volts Magazine, The Magazine for
the Electronics Hobbyist
, ISSN 1528-9885;
www.nutsvolts.com/
38
Circuit Cellar, The Magazine for Computer
Applications
,
ISSN 1528-0608;
www.
cuitcellar.com/
39
Jack G. Ganssle,
A Guide to Debouncing
,
Rev 3: June, 2008;
www.ganssle.com/
debouncing.pdf
40
CW Touchkeyer touch paddle, model
P1PADW;
www.cwtouchkeyer.com/
P1PADW.htm
41
The program source code file and circuit
board pattern files in ExpressPCB format
are available for download from the ARRL
QEX
Web site. Go to
www.arrl.org/qexfiles
and look for the file
5x10_Bern.zip
.
42
Gary Gordon, K6KV, “Build a Puff-and-Sip
Key,” March 2004
QST
, pp 31-32.
David Bern, W2LNX, was first licensed in
1979 as N2AER with an Advanced Class and
upgraded to an Amateur Extra Class in 2000.
Later, he obtained his W2LNX vanity call sign
since he is also an avid Linux enthusiast. As a
high school student, he earned his First-Class
Radiotelephone Operator License with Ship
Radar Endorsement. In 1977, he earned a
BS in Computer Science from City College of
New York and then in 1983 earned an MS in
Computer Science from New York University.
He is a professional software developer and
also an adjunct professor of engineering at
Montgomery College, Rockville, Maryland. He
prefers building and experimenting with ham
radio projects to operating but enjoys operat-
ing QRP digital modes in the summer with his
son Adam, KB3KVD, in the Virginia moun-
tains. Currently, he is learning microcontroller
programming and digital signal processing.
