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PICAXE-28X2 ELECTRONIC SUPER KEYER

(AND TRAINER)

 

 The Circuit Board Art Work    The Schematic    Bill of Materials    Assembly Instructions    Pin Out Description   

 

THE "BASIC" CODE

Slot0 Code    Slot1 Code    Slot2 Code    Slot3 Code

 

Introduction: 

This keyer project follows on from a few other PICAXE electronic keyer projects developed in the backyard shed. The motivation this time was the requirement for 2 reed relay outputs. One reed relay output goes to the HF+6M radio "key input" and the other reed relay output goes to the HF+VHF+UHF all mode radio "key input". Hence, one key, one keyer, operating either radio. ((Possibly a 3 relay version in the future as I would like to connect my Vibroplex key to both radios and a "free" CW over IP (internet) software program called "CW Communicator.")) Also known as CWCom. Read note #1

 

Keyer Features: 

There are 4 different iambic CW keyer modes. Mode "A", Mode "A" with auto spacing, Mode "B", Mode "B" with auto spacing. A "Bug Mode which you will probably never use. A Straight Key Mode for using a straight key with with two radios and one Mode "A" CW keyer practice mode with speaker output only.

 

Morse Features: 

CW Morse practice to the speaker and relay outputs. Example, for beginners starting with E, T, I, M, N, U etc. etc. Also, random Letters, Numbers and Punctuation or a combination of L, N and P. 100 of the most spoken English words in different order like The, There, When, Here, At etc. etc. 58 abbreviated CW words like Ant, Rig, 5NN, QSL, TU, TNX, WX, Key, etc. etc. All the random call signs generated that you'd ever want to hear! Example VK 2x2 and 2x3. ZL 2x2 and 2x3. JA 2x2 and  2x3. U.S. call signs starting with AKNW. 1x2, 2x1, 2x2, 1x3 and 2x3. Plus, random 1x2, 2x1, 2x2, 1x3 and 2x3 call sign generators. Read note #2.

 

The Circuit Board and Art Work: 

The circuit board art work is the required "mirror" image but is not to scale and has been painfully made with MS Paint. It has been saved in the .JPG format to save web site space. If you'd like the original .BMP file, please email me. If you build this project, read note #3.

 

The Chip and Code: 

This project uses the PICAXE-28X2 microcontroller chip and is programmed in the PICAXE "BASIC" programming language. Read note #4.

 

THE LCD Screen: 

The LCD is a typical 2 row by 16 character display. In this project the Morse Code is not printed to the display. The display is there simply to display which of the 48 possible menus you are currently in. Otherwise, it's just one big guess!  So you don't have a 2x16 LCD? Read note #5.

 

Other Possibilities: 

Since the keyer circuit board uses 2 reed relay outputs and a couple 5 VDC analog inputs, I was thinking the circuit board could be used for some other project, like an antenna rotator controller. Of course, you would have to rewrite all new code, put each reed relay on a separate digital output  and you would have to use interposing relays with the reed relays since the reed relays are only rated to 1 amp.

 

 

 

 

The finished PICAXE-28X2 Electronic Super Keyer

 

 

 

 

 

 

An example of the LCD.

This would appear on the LCD when the two rotary switches are set to Main menu 1, Sub menu 1 which would be Iambic Keyer Mode "A".

 

 

 

 

 

An example of the LCD.

This would appear on the LCD when the two rotary switches are set to Main menu 2, Sub menu 1 which would be Random practice letters E,T,I,M,A,N in groups of 5.

 

 

 

 

 

An example of the LCD.

This would appear on the LCD when the two rotary switches are set to Main menu 4, Sub menu 1 which would be Random VK 2x2 and 2x3 call signs.

 

 

 

 

 

A photo of the JAYCAR part #SR1210,  1 pole 12 position switched configured to use all 12 positions.

 

 

 

 

 

 

A photo of the JAYCAR part #SR1210,  1 pole 12 position switched configured to use 4 positions.

 

 

 

 

SOME PHOTOS OF AN EARLIER VERSION OF THE PICAXE-28X2 SUPER KEYER

 

This older version incorporated a push button rather than a 1 pole 4 position rotary switch.

 

 

 

The "mirror" image circuit board art work printed out on glossy photo paper. (This is not the latest version of the keyer.)

 

 

 

 

 

This is the a photo of keyer circuit board after the art work transfer. (This is not the latest version of the keyer.)

 

 

 

 

 

This is a photo of the keyer circuit board after etching in Ammonium Persulphate. (This is not the latest version of the keyer.)

 

 

 

 

 

And example of a 100 percent complete art work transfer to copper. Yes, you can make nice single sided circuit boards in the back yard shed!  (This is not the latest version of the keyer.)

 

 

 

 

 

The completed keyer circuit board that has been etched, cleaned, holes drilled and cut to size. (This is not the latest version of the keyer.)

 

 

 

 

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