Source code for the Bruce Hall W8BH Morse Tutor, ported to the Mega 2560 Pro Mini. This 'port' is mainly a pin re-assignment from the STM32F104C8T6 'Blue Pill' to the Mega 2560 Pro Mini.
This version of the source code is based on an early release. For the latest source code release please see http://w8bh.net/
To 'port' the latest source code to a Mega2560, just edit it with the Mega2560 pin assignments.
This source code is released under the MIT License.
Copyright (c) 2019 Bruce E. Hall
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:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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. 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.
The schematics show an LM2596 buck converter and a PAM8403 Amplifier module.
The wiring diagrams show a simple voltage regulator using a 78L05 IC and a couple of electrolytic capcitors. This is from building Stand-alone Arduinos. The transistor amp was borrowed from the schematic of the K3NG Keyer. These just show that brand new modules do not have to be purchased in order to build this circuit.
The file pin-assignments.txt shows the original Blue Pill pins used, and the corresponding Mega2560 pins that I used to 'port' the W8BH Morse Tutor to the Mega2560. I used a RobotDyn Mega 2560 Pro Mini without a USB port. Your Mega 2560 Pro Mini may have a USB port. Or, you may use a Mega 2560 R3 full size development board.
Full 8 part Morse Tutor Tutorial (PDF) available at: http://w8bh.net
Original source code for Blue Pill development board at: https://github.com/bhall66/morse-tutor