WJ8888

22-07-2006
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Klik op de afbeelding om de link te volgen

The following hardware, software & books were used during the project:








Hardware:
Dynatec Oscilloscope 8120 2x20Mhz
Oscilloscope APS230 2x30Mhz
Function Generator 1x2Mhz
Philips PM5132 Function Generator 0,1Hz-2MHz
Power supply 0-30V/3A-12V/1A-5V/1A
Logicport 34 channels 500MHz analyzer
Atmel STK500 development board
Laptop Promedion Intel(R) Pentium(R) 1.80GHz
Laptop Compaq Armada
Software:
Bascom AVR 1.11.7.7
Avr Studio 4.12
ABC Edit 1997-2000
Borland C++ Enterprise 6.0
Books:
AVR Microcontroller - Safinaz Volpe & Francesco P. Volpe / ISBN 90.5381.091.9
Elektuur Magazine June 2005 / NR° 500
USB Complete Second Edition - Jan Axelson / ISBN 096508195.8
Datacommunication - J. Clayes / ISBN 90.6200.180.7
Digital Techniques 1A - Cuppens J. Sayes H. Vandenheede H. / ISBN 90.6200.070.3
Microprocessor Techniques and Interfacing - Beuckelaers A. Van den Wijngaert W. / ISBN 90.6200.438.5

                                                                    All used software is licensed.

21-07-2006
Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Links
Here you can find some of the websites where a link is active:

Many thanks to Mark Alberts of MSC Electronics for his support during the project. Please visit the website where a link is active among many other intresting links to sophisticated hobby projects: http://www.mcselec.com/index.php?option=com_weblinks&catid=70&Itemid=4

Another intresting site where you can find a link to our project is the website of Charlos Potma which is setup for HAM related projects. You find lots of information on how getting started writing your own applications for the AVR microcontroller series of Atmel. All the described applications are written in Bascom, the Basic editor, where WJ8888 was also developed with. You can find the home page of Charlos at http://www.qsl.net/pa3ckr/ while the active link is located at http://www.qsl.net/pa3ckr/bascom%20and%20avr/teletroncontrol/index.html at the bottom of the page. Thanks Charlos!

Do you also have a HAM related website, or if you are a Bascom or AVR microcontroller guru, or just have a tiny free spot at your website
and you like to include our project, we would appreciate it very much and include your site also on the WJ8888 project site. So please let us know!

24-05-2006
Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Components
Most important components:

7 Optocouplers 4N35, one for each data communication line between PC and receiver
1 Darlington Transistor Array ULN2803A, drives the communication leds and protect
   the microprocessor output ports
1 Hex Non Inverting Buffer Driver, CD4050, rectifies the communication signals after
   the optocouplers
7 NPN BC547 Transistors, drives the infrared leds of each optocoupler and protect the
   microprocessor and receiver current withdraw
1 Atmel AT90S8535 microprocessor, mounted on an ABC mini board, including a
   MAX232 driver
1 Hitachi HD4470 compatible 16x2 LCD
23-05-2006
Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Open source
Hereby we give the source codes of the project as open source.

The microcontroller source code you can find here http://www.uploadarchief.net/files/download/quad.bas  while the C++ main program is here http://www.uploadarchief.net/files/download/unit2.txt. When you feel the need you can search to some mathematical formulas in the C++ source which were extracted from the WJ8888 manual and descriptions.
If you look at the formulas you get some idea of the awesome magical design using only plain TTL logic without any microcontroller aboard! Great job WJ.

Because of the complexity to compile and build the project we can only provide the executable alpha version to have a look.
Microcontroller source is available in both bas (Bascom) and hex (Machinecode) format.

In no event shall we accept liability in any way when using this software. Please notice that this software is just a part of the project and that a high skill in electronics and software is needed to make the project succesfull.

22-05-2006
Klik hier om een link te hebben waarmee u dit artikel later terug kunt lezen.Schematics
You can find a PDF Multipage schematic of the WJ8888 interface at http://www.uploadarchief.net/files/download/wj8888.pdf

In no event shall we accept liability in any way when using this schematics. Please notice that this schematic is just a part of the project and that a high skill in electronics and software is needed to make the project succesfull.



Watkins Johnson WJ8888/B2 25kHz Optocoupler Interface
This site is not affiliated in any way with the Watkins Johnson company or DRS Technologies, the present owners of WJ Ga

Foto
Version 1.1 Alpha now fully operational!
Inhoud blog
  		• Welcome
  		• About us
  		• Software
  		• Hardware
  		• Radio Receiver
  		• Receiver interface
  		• Making of : preparing the 40 DIL on the ABC miniboard
  		• Making of 2 : preparing the photo-sensitive epoxy PCB
  		• Making of 3 : Peter etching the PCB
  		• Making of 4 : placing the components
  		• Making of 5 : finally done
  		• You Tube 1 : 25kHz signals
  		• Screenshot 1 : PC software interface
  		• Screenshot 2 : Start up screen
  		• Screenshot 3 : LCD Mini Monitor Mode
  		• Screenshot 4 : Maxi Monitor Mode
  		• Screenshot 5 : TTL square wave analyzer
  		• System overview
  		• Optocoupler interface
  		• Microcontroller
  		• LCD
  		• MIL Connector
  		• Testing
  		• Protocol
  		• Watkins Johnson History
  		• Lab
  		• Links
  		• Components
  		• Open source
  		• Schematics

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