Calibrating the perilstatic pump

 So I received the pumps ordered on Taobao. As many forums gave various feedback on these pumps I decided to calibrate them.

In fact, for the experience, I added a cooking scale under the receiving tank and measure the water weight... as 1cc = 1 gram, it is quite easy to measure !

I ran some tests and finally, 60s equal 30cc. Easy, eh ?

To drive the pump, it is quite easy: a single TIP120, a 1K to 3.3K resistor and a power supply. Schematics & explanation can be found here.







Using a simple diagram to drive them with the Arduino, I ran the pump for a minute and measure the amount of water that have been moved from one container to another.