This happens when displaying a VLW font at a size significantly different from its creation size.
Processing expects all external assets, including .vlw files, to live strictly inside a sub-folder named data within your root sketch folder. Final Thoughts
An online tool that provides font conversion services. It's user-friendly and supports a wide range of font formats. ttf to vlw converter
For Wio Terminal devices, after generating VLW fonts, you need to copy them to an SD card. Additionally, you must enable smooth fonts by navigating to the User_Setup.h file in the Seeed_Arduino_LCD folder and uncommenting #define SMOOTH_FONT .
Depending on your workflow, you can use built-in IDE features or lightweight online utilities: TTF to VLW converter - István Horváth - GitLab This happens when displaying a VLW font at
(unlike vector-based TTFs), every character added significantly increases the file size. For resource-constrained environments like microcontrollers
Glyph data structure (each):
If you do not have the Processing IDE installed on your machine but need to generate a VLW file for a web-based repository or a headless build environment, you can use online font conversion tools.
lv_font_conv --font MyFont.ttf --size 24 --bpp 4 --range 0x20-0x7F -o output_font.lvgl It's user-friendly and supports a wide range of font formats
PFont myFont; void setup() size(500, 500); myFont = loadFont("YourFont.vlw"); textFont(myFont); void draw() background(0); text("Hello, World!", 100, 100); Use code with caution. Common Issues & Troubleshooting
