Peristaltic Pump Setup

[adafruit_support_bill]

@stocke - The roller head should be a friction fit on the shaft. Do the rollers move at all when the motor runs?

[downeym]

I was curious if anyone knew an approximate flow rate for water at 12V for this pump?

also, has anyone had any issues with leakage while the pump is stopped if the reservoir is located above the pump?

thanks for any info you can provide.

[adafruit]

Flow rate: up to 100 mL/min

This pump is not specifically designed for having the reservoir above but it shouldn't leak any fluid

[stocke]

@stocke - The roller head should be a friction fit on the shaft. Do the rollers move at all when the motor runs?

nope, the rollers don't move at all ... I'm using motor shield, event when I crank up the speed, the shaft just spins, and the pollers don't move. It seems like it takes much more force to spin the rollers on the tube than the shaft can tolerate before it just spins. Is it possible you guys got a bad batch of these things?

[adafruit_support_bill]

That's odd. I've tested a few here with good results and we haven't had any other reports of failure. But if yours are malfunctioning as described, we'll be happy to replace them. Please contact support@adafruit.com with a link to this thread to arrange for a replacement.

[jbfarah9]

Hi,

Can you tell me if this pump will run at 15V?

Thanks!

[adafruit_support_bill]

Can you tell me if this pump will run at 15V?

It is rated for 12v. Most DC motors will tolerate over-voltages of 25% for intermittent use. Heat buildup is the enemy and prolonged use at higher voltages will significantly reduce the lifetime of the motor.

[dkossman]

I ordered and received one of these pumps 4 days ago and hooked it up to the hardware PWM output of my Raspberry Pi using an N-channel mosfet and a 12VDC supply. I also placed a diode across the motor as advised. It worked for a few days but yesterday the motor started to misbehave, it gradually got worse, and now it has completely stopped working - the motor doesn't turn any more, it just heats up - seems to be pretty much shorted out. I tried connecting it directly to the 12V supply and its the same problem - motor doesn't turn. I checked the DC supply, its fine. tried some tuner spray on the motor brushes, didn't help.

What is the process to get a replacement?

thanks

[adafruit_support_bill]

@ dkossman - If you contact support@adafruit.com, with a link to this thread we can send you a replacement.