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M O R S E C O D E P R A C T I C E G E N E R A T O R
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Author : Dan Trudgian (M0TGN) http://www.m0tgn.com Date : 14th September 2015 Version : 1.0 Description :
This sketch is designed to emulate the Datong D70 practice oscillator. It generated either letters, number or a mixture of both selected from a switch 2 controls allowed the WPM to be altered and the gap between characters.
This sketch should achieve the following requirements :
- Generate either numbers, letters or mixed - switched selection.
- Variable speed based on Variable resistor (WPM) between 8 and 34 WPM
- Generate 5 chars groups
- Allow a variable gap based on Variable Resistor between 0.5 and 4 seconds
Pin Assignments :
Switch D8 = Call signs D9 = Mixed D10 = Numbers D11 = Letters
A0 = Used for float voltage for random seed A1 = Not used A2 = Used for Speed variations A3 = Used as Gap Variations A3 = Not Used A4 = Reserved for I2C LCD A5 = Reserved for I2C LCD
Future enhancements to include
- LCD display - Completed 17/9/2015
- Callsign training - Complete 15/09/2015
- Code review
Known Issues
- When generating call signs choosing a different mode will not immediately work
- Call signs can be longer than 20 chars per line.
- WPM calculation can be slightly off at mid point
To make this work well you will need :
2 x Variable Resistors. 1K LIN 1 x 4 way switch. 1 x Speaker
To make this gucci you can add a screen I use an I2C screen, hence teh included Library The library I use is here : https://arduino-info.wikispaces.com/LCD-Blue-I2C
You will also need to know the address. Use this link to discover the address of the I2C device : http://playground.arduino.cc/Main/I2cScanner
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