For those wondering what a tachmeter is:
https://www.pcper.com/files/imagecache/article_max_width/review/2017-08-13/08.jpg
The concept is simple, you calculate a value of cpu, you then calculate what image needs to be loaded and then you display the correct image as a skin
For the CPU it's working fine, but today i wanted a RAM tachmeter, it's very similar to a bar but i won't want to load a bar, i wan't to load around 7 images as if each image is like a small light, so the concept for the cpu tachmeter is this: