How to visualize temperature map MLX90640

[janek]

Hi @BartButenaers,
Thank you for sharing. I haven't try it yet, but my first feedback is:

• can you provide the option for displaying numbers on the canvas, not only colors?
• include at the bottom a legend (from minimum to maximum with colors) similar to the legend in a picture here https://github.com/sparkfun/SparkFun_MLX90640_Arduino_Example
  Cheers