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DEVELOPMENT.md

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Development tips and tricks

Convert images to XBM

  1. Load your picture into Gimp
  2. Convert it into a indexed bitmap, 2 levels, black & white (Image | Mode | Indexed...)
  3. Export as XBM (.xbm extension)
  4. Open XBM file and copy/paste its content in source file
  5. Add U8G_PROGMEM after variable name (static unsigned char u8g_logo_bits[] U8G_PROGMEM = { [...] })
  6. Display the picture: u8g.drawXBMP( 0, 0, u8g_logo_width, u8g_logo_height, u8g_logo_bits);