Open F5MDY opened 2 years ago
I think you must have some other features enabled. I have two keyers running on a Nano clone that have Command Mode, Memories, a potentiometer and a 1602 LCD display. It fits. I am using a relatively old version of the code from 2019_12_17. Flash 27632 89% RAM 1435 However the memory repeat feature does not work (hold memory button and tap paddle). I think that is because it is low on RAM. Otherwise all OK. 73 Fred VK2WS
Hello Fred, Thank you for your answer. Your 1602 LCD is not using the I2C library ??? It is connected with 4 wires ? 73 Nico
Nico, All my K3NG keyers that have a display (either the1602 or the 2004 type) are connected with I2C. Just 4 wires, +5V, Gnd, SDA, SCL. As indicated, I have two keyers hosted on a Nano clone board that have Command Mode, Memories, a potentiometer and a 1602 LCD display that is connected with I2C. Additional features, like the CLI or Winkeyer emulation, require more flash memory than the Nano has, so you must leave those features out. Here is what I have uncommented in the features and options file -
73 Fred VK2WS
TU Fred, effectively with these options it's working. My problem came from my display which is a OLED_SSD1306. The library should be larger and there is no enough space. I will switch my display to a more conventional 1602LCD Best 73, Nico
Nico, I also have tried to use a small I2C 0.91inch 128x32 OLED display in an attempt to reduce the size of the enclosure required to house the finished keyer. However, like you, I found the library to support the OLED display will not fit in the available flash memory space in a Nano. It was interesting playing with demonstration sketches to see what font size would be readable, how many lines and columns there might be and if it might be possible to have the wpm continuously displayed on one side of the display in large characters. But it didn't work out. I then changed to using a 4 digit TM1637 LED display. I found a library that works with that display and the code does fit into a Nano. No scrolling characters as you send. But, I have a continuous display of the WPM. It required many changes to the code. And I have it all fitted into a smaller box now. 73 Fred VK2WS
Hello,
If you try to put FEATURE_BUTTONS, FEATURE_COMMAND_MODE, FEATURE_MEMORIES, FEATURE_POTENTIOMETER and a LCD (FEATURE_DISPLAY), you have not enough space to enter in an arduino nano.
So I try to add a Small_Memory_Display mode in order to get a simple display mode without saturating the memory.
I selected a few useful lines in the command_mode() routine to check on the display several parameters. And for the moment I have 95% of program storage space.
But I would want to have also an echo of the keyed characters as FEATURE_DISPLAY usually permits.
I didn't find, in the large program, where is called the procedure to print keyed characters on the display ?
Have you an idea ?
73, Nico