Kamoer KPHM100-STB10 Small Life high-Precision Low Flow peristaltic Pump 24V Stepper Motor Long Service Liquid dosing Pump 0~180ml/min with 3 mm ID ×5mm OD BPT Tube

I developed a small scale dosing system for hydroponics using this pump. This pump has far exceeded my expectations, and it's specifications. Using TMC2209 stepper motor drivers this pump can exceed the pumping rate that is specified. I got it to pump upto 250ml/min using the TMC2209 with a ESP32 microcontroller. In order to get it to pump that fast you will need to use a special stepper driver library to drive the stepper at 20KHZ to achive that rate. I cannot guarentee how long this would last at that rate. My application pump speeds of 0.05-10ml/min are more in line with what the pump is designed for. What really blows me away with this pump is with the TMC2209 stepper driver, and the correct library and settings the pump will require ~5000(256 microstepping) steps to dose 1ml of water at room temperature, with very low head pressure. This pump is repeatable as it only really surges when there is only one roller on the capstain. However this is a physical issue with a 3 roller peristaltic pump. If you need a small peristaltic pump, and want a great quality pump this one is for your application. Great value decent precision, and decent build quality.

The pump has a great seal 10 out of 10