Let’s discuss the steps to use Image2lcd.

1. Import the image to be converted

2. Adjust the output image features

Interface function options

1. Output data type

Select the output format of the selected image, with five types: binary, C language arrays, BMP, WBMP, Sigmate. In microcontroller systems, it is common to use C language arrays to store and use the font patterns.

2. Scanning mode

A bitmap is composed of individual pixels. Here, choose between horizontal scanning or vertical scanning. The image above the red box is a simple illustration that changes according to different parameter selections to aid understanding. In microcontroller systems, a left-to-right, top-to-bottom scanning method is usually used.

3. Output grayscale

A bitmap is composed of individual pixels. Here, choose the composition method of a pixel. In monochrome mode, a pixel is composed of either black or white, suitable for use on monochrome screens.4Grayscale differs from monochrome, introducing the concept of grayscale, allowing transitions from the darkest black to the brightest white by changing the pixel’s translucency (brightness). Four grayscale means there are four colors from white to black. Color mode introduces different colors of led, with a 16-bit true color mode where a pixel is composed of 5 red leds, 6 green leds, 5 blue leds, allowing 2^16 colors to be displayed.

4. Maximum width and height

This refers to the size of the output image. 180 * 180 means the image consists of 180 * 180 pixels. Note: The output image’s aspect ratio is consistent with the original image. If the original image height is 1:1, the output ratio is also 1:1.

5. Byte order

Switch between big-endian and little-endian byte orders. Big-endian has the low byte first, high byte last. Little-endian is the opposite.

6. Restore default values

Clicking the restore default values button resets the output image adjustment parameters to normal display, with no color inversion, brightness, and contrast as per the input image.

7. Color inversion

If the color inversion checkbox is selected, the output image’s color data will be inverted.

8. Display method

Can be set to normal display, left-right flip, up-down flip, and left-right up-down flip.

9. Brightness

Can drag the brightness slider to adjust the output image’s brightness.

10. Contrast

Drag the contrast slider to adjust the output image’s contrast.