blimpyway:
@Cashdds - I don't know why this pump was selected you may find peristaltic pumps with higher flow in the same power range. They-re likely cheaper, and with some magnetic or optical encoder you can get a quite precise measurement of pumped volume, within a wide range of fluid viscosities, temperature or pressure head. The mp6 pumps only advantage is they are much lighter.E.g. this one can be driven from an arduino pin with only a transistor.
In addition, the application I am doing does not require a greater volume. .5 to 2 ml/min is all I need....AND it has to be portable....ultra portable.... so I am trying this version.
Also....there are a lot of stepper programs to run those motors but I have never played with running a Piezoelectric one. The dosing control looks like it will be as or better than the stepper and peristaltic pump.
As far as the cost of this....the mp6 pump is only $38.00 and the driver board is $68.00. So $116.00 for both..plus 20.00 for Sparkfun redboard programmed for uno= $136.00.
The Welco WPM peristaltic with stepper motor is $110.00 (if u buy 10)... add to that a redboard and a Rugged Circuit Driver for $30.00 we are at $160.00....and the stepper is a 24v bipolar system much larger than the piezoelectric...so...I figured dive her a chance....(my experiment has to meet all FDA food/medical as well as USP Class VI criteria.