![]() ![]() When this pin is LOW a tone of the set frequency has been detected. Hook up your LCD panel to the Arduino using these pins: LCD pin 1 to GND LCD pin 2 to +5V LCD pin 4 to D7 LCD pin 6 to D6 LCD pin 11 to D5 LCD pin 12 to D4 LCD pin 13 to D3 LCD pin 14 to D2 LCD pin 15 to +5V LCD pin 16 to GND Data from pin 8 of the LM567C will be fed to D8 on the Arduino When this pin is HIGH there is no tone detected. If you don't have a 20x4 (they're really only a few bucks more) you might want to leave out the word wrap and scrolling. ![]() Sometimes long words or missed spaces will result in only two words left on your display. Frankly, I don't think scrolling makes sense with only two lines. If you are planning on using a 16x2 you will want to make some changes. This version makes use of the 4 digit parallel method of driving the display. When the bottom line is filled, all lines will scroll up one row and new text will continue to appear at the bottom. If a word extends beyond the 20 column line, it will drop down to the next line. The sketch includes funtions for word wrap and scrolling. This project is built around the 20x4 LCD display. The program worked fine but the Tone tune was very small. I tested it with an Arduino program called ‘cwfoxhunt’ which you can find here. I liked the project and built it in a home made enclosure made from PCB. However, if you reset and then send 'CALL ME WOODY' it will match your speed quite quickly. Downloads: Software In the VERON magazine of November 2015 there was a description of a CW Morse decoder built around an Arduino Nano. After a reset, the following text is very difficult to lock in on: 'SHE IS HIS SISTER' because there are only two dahs in the whole phrase and they come near the end. The more dahs you send at the beginning the sooner it locks into solid copy. The software tracks the speed of the sender's dahs to make its adjustments. If the tone decoder is not centered on the frequency of the incomming signal, you may have to fine tune the module as you lower the volume. Lowering the volume of the incoming CW can also help. If you are not seeing solid copy, press the restart button on your Arduino. ![]() The first few characters may come out wrong while it homes in on the speed. This module allows you to tune to the frequency of a specific tone while ignoring noice and other tones of different frequencies The program will automatically adjust to the speed of code that is being sent. Details of this module will eventually be posted on line. Budd's Arduino sketch has to be one of the best structured ones I've seen and it's got a cleaver option for automatically 'tuning in' the decode. MIT license, all text above must be included in any redistribution ********************************************************************** This project makes use a custom built tone decoder module using the LM567C microchip. Another popular option is the Morseduino by Budd Churchward, WB7FHC, found at: and on other various project sites. 1.5 (c) 2014, Budd Churchward - WB7FHC This is an Open Source Project Search YouTube for 'WB7FHC' to see several videos of this project as it was developed. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE./*********************************************************************** WB7FHC's Morse Code Decoder v. THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: ![]()
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