Arduino cw decoder project9/24/2023 ![]() I already have a serial header on the board which I don't use, maybe I should add a 5V pin to that header. These HD44780 based LCDs have big screen sizes, you can get them in a multitude of backlight colors, with inversion or not and are dirt cheap. I've opted for an alpha-numeric display because there is no need for graphics in this project and if required I can upload a few graphic symbolsĪs new characters. Scroll through it with the arrows on the keyboard. I plan to have a big character receiver buffer and be able to The advantage of using the LCD in parallel (4-bit) mode vs I2C is that you can write to it very fast. I migrated Hjalmars project to a ChipKit Max 32 board (32-bit chip, 80 MHz clock). The code can be used with a full blown Arduino board or an AVR microcontroller chip can be programmed and used directly in a circuit. Renesas makes PS2565-1 in DIP4 which can handle 80mA. It will be very simple for others to download the software to an Arduino and have fun with your project. This is an open source Arduino based CW (Morse Code) keyer with a lot of features and flexibility, rivaling commercial keyers which often cost significantly more. Good point about the opto-coupler current. ![]() I might look at the K3NG software for inspiration but the software will be completely re-written.Īnyways the hard part will be the (real-time) Morse decoder which is a new function.
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