I was exploring ways to make a future robot project more appealing and came across a number of articles about animated robotic eyes created to convey expression or mood. This looked like a bit of fun and quite achievable using the LED matrix modules that I have been playing with for a while. Here’s the result.
Managing fonts in the is a key factor in the Parola/MD_MAX72xx libraries to being able to support multiple languages and diverse alphabets.
In the first part we looked at how fonts are defined and the tools used to create the bitmaps for each character. In this part we will look at the Parola and MD_MAX72xx library methods that access and manage font data in the library code.
The Parola library allows you to display text on MAX72xx controlled LED matrices using a wide range of text effects. One of the base components for this flexibility are the replaceable fonts and the utilities that allow new fonts to be designed and implemented in the library code.