cr-pump-driver

This project tries to achieve accurate and repeatable filling of a given weight using a peristaltic pump.

I was trying to fill yogurt into small cups. For this application, time-based control was not precise enough because the density of the yogurt and consequently the flow rate was not consistent enough. To get better accuracy I included a weight scale and a controller that adjusts the speed of the pump according to the weight of the yogurt in the cup.