The Gravity: Digital Peristaltic Pump is a compact and efficient liquid actuator developed by DFRobot. Designed for accurate microfluidic control, this peristaltic pump integrates a PPM motor driver and supports standard servo control signals, making it a fully compatible peristaltic pump for platforms like Arduino, Raspberry Pi, micro:bit, and others.

This peristaltic pump features a durable BPT tubing and a three-roller head that minimizes pulsation while maintaining steady fluid flow. Its anti-acid build, low-noise operation, and plug-and-play Gravity interface make this microfluidic control pump an ideal solution for water quality monitoring, drip irrigation, titration systems, and DIY automation.

Key Features

Peristaltic Pump:

• Delivers fluids with low noise, low cost, and simple structure as a reliable peristaltic pump

• Made with non-toxic materials, easy to clean and maintain peristaltic pump components

• Three-roller design for moderate, steady fluid pulsation in microfluidic control

• Supports quantitative liquid transfer up to 45ml/min with this peristaltic pump

Motor Driver:

• Integrated Gravity PH2.0-3P interface for easy peristaltic pump setup

• Uses servo PPM signal (50Hz) to control speed and direction of the peristaltic pump

• Compatible with Arduino, Raspberry Pi, micro:bit and similar peristaltic pump controllers

Specifications

Driver Board:

• Input Voltage: 5V6V

• Max Continuous Current: 1.8A

• Peak Current: 2.5A

• PPM Signal Resolution: 1s

• Speed Control via Pulse Width Range: 5002500s

• Size: 27.4 28.7 mm (1.08″ 1.13″)

Peristaltic Pump:

• Motor Type: DC motor

• Rated Voltage: 6V | Power: 5W

• Flow Rate: 45ml/min

• Tube Material: BPT (2.5mm ID, 4.5mm OD)

• Operating Temp: 040 | RH < 80%

• Pump Head: Engineering Plastic, long life

Applications

• Water quality monitoring systems

• Hydroponics and drip irrigation

• Chemical titration (pH, colorimetric, potentiometric)

• Aquarium & shrimp tank automation

• DIY food, beverage & coffee machine projects

• Medical and lab-grade fluid delivery

Whats in the Box

• 1x Gravity Digital Peristaltic Pump with Motor Driver

• 1x Digital Sensor Cable

• 1x Silicone Tube (1m)

• 1x 10mL Plastic Measuring Cylinder

reference

Product wiki

Code Resources