Fill started his life in the 1970's at a L'Oreal factory, measuring the powder in compacts.
He then spent more than a decade filling creatine powder for a health food distributor. When we adopted him, he'd seen a lot of action, and was in need of some love.
After about a year of increasing tolerance problems, calibration became a significant time-waster, and after searching for replacements and component damage, it became clear that tracking down the problems would be more difficult than just implementing a microprocessor solution.
I chose Arduino because it was easily available, simple to program and cheap enough to have an entire system available as backup.