The Gravity Digital Peristaltic Pump is a high-precision, non-toxic, pollution-free liquid transfer pump developed by DFRobot. Designed as an actuator for liquid systems, it is a reliable component in water quality monitoring, hydroponics, laboratory experiments, and automation projects. This peristaltic pump integrates a PPM motor driver with a Gravity interface (PH2.0-3P), ensuring seamless compatibility with Arduino, Raspberry Pi, micro:bit, and other microcontrollers for easy control of direction and flow rate.
Constructed with a BPT anti-acid, long-life tube and engineering plastic pump head, this pump ensures durability and stability. Featuring three rollers for moderate pulsation, it delivers smooth flow with low noise, low cost, and simple structure, making it easy to operate and maintain. By utilizing the principle of positive displacement, the pump enables precise and quantitative fluid delivery, suitable for a wide range of applications including titration experiments, drip irrigation, aquaculture, and more.
Features
• Actuator for liquid systems with integrated PPM motor driver
• Non-toxic, pollution-free, safe for science and environmental projects
• Three rotors for moderate pulsation and stable fluid delivery
• Compatible with Arduino, Raspberry Pi, micro:bit, and other microcontrollers
• Low noise, low cost, simple structure, and easy to maintain
• Tube made of durable BPT material, anti-acid and long life
• Ideal for experiments, hydroponics, irrigation, fish farming, and automation
What’s Included
• 1 x Gravity Digital Peristaltic Pump with PPM motor driver
• 1 x Digital sensor cable
• 1 x Silicone tube (1m)
• 1 x 10 mL plastic measuring cylinder
Size
• 27.4 x 28.7 mm / 1.08 x 1.13 inches
Specifications
Driver Board
• Input Voltage: 5 - 6 V
• Maximum Continuous Operating Current: 1.8 A
• Peak Current: 2.5 A
• Quiescent Current: <1 mA (No PPM Signal Input)
• PPM Signal Resolution: 1 us
• Positive Pulse Width of PPM Signal: 500 - 2500 us
• Forward Pulse Width Range: 500 - 1400 us (500 us: max forward speed)
• Stop Pulse Width Range: 1400 - 1600 us
• Inverted Pulse Width Range: 1600 - 2500 us (2500 us: max inverted speed)
• PPM Frequency: 50 Hz (Servo Control Signal)
• Connector: Gravity PH2.0-3P
Peristaltic Pump
• Motor: DC Motor
• Rated Voltage: 6 V
• Rated Power: 5 W
• Tube Material: BPT (anti-acid, long life)
• Tube Specifications: inner diameter 2.5 mm, outer diameter 4.5 mm
• Pump Head Material: Engineering Plastics
• Pulsation: Three Rollers, Small Pulsation
• Flow Rate: ≈45 ml/min (≈1 ml/s)
• Working Conditions: Ambient temperature 0 ~ 40 °C, relative humidity <80%
