The Gravity: Digital Peristaltic Pump is a compact and efficient liquid actuator developed by DFRobot. Designed for accurate microfluidic control, it integrates a PPM motor driver and supports standard servo control signals, making it fully compatible with platforms like Arduino, Raspberry Pi, micro:bit, and others.
This 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 it an ideal solution for water quality monitoring, drip irrigation, titration systems, and DIY automation.
Key Features
Peristaltic Pump:
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Delivers fluids with low noise, low cost, and simple structure
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Made with non-toxic materials, easy to clean and maintain
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Three-roller design for moderate, steady fluid pulsation
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Supports quantitative liquid transfer up to ≥45ml/min
Motor Driver:
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Integrated Gravity PH2.0-3P interface
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Uses servo PPM signal (50Hz) to control speed and direction
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Compatible with Arduino, Raspberry Pi, micro:bit and similar boards
Specifications
Driver Board:
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Input Voltage: 5V–6V
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Max Continuous Current: 1.8A
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Peak Current: 2.5A
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PPM Signal Resolution: 1μs
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Speed Control via Pulse Width Range: 500–2500μs
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Size: 27.4 × 28.7 mm (1.08" × 1.13")
Peristaltic Pump:
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Motor Type: DC motor
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Rated Voltage: 6V | Power: 5W
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Flow Rate: ≥45ml/min
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Tube Material: BPT (2.5mm ID, 4.5mm OD)
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Operating Temp: 0–40℃ | RH < 80%
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Pump Head: Engineering Plastic, long life
Applications
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Water quality monitoring systems
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Hydroponics and drip irrigation
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Chemical titration (pH, colorimetric, potentiometric)
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Aquarium & shrimp tank automation
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DIY food, beverage & coffee machine projects
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Medical and lab-grade fluid delivery
What’s in the Box
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1x Gravity Digital Peristaltic Pump with Motor Driver
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1x Digital Sensor Cable
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1x Silicone Tube (1m)
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1x 10mL Plastic Measuring Cylinder