1.Calibration: Place mouse pointer in the dark grey line above start to begin at 0% 2.Computer settings adjustment:Adjust pointer speed in control panel to the lowest speed. 3.Start: Move mouse strait up. 4.Stop: Stop when you reach 100% (Top of Grey Line) There will be a slight delay in the percentage reading.
If you are using this with your Makey Makey make sure to adjust the variable's on the water flow sprite in scripts to slow or speed up the water flow. Big thanks to Google_Network for creating the original Water Glass Project.