DFRobot
Gravity: Digital Peristaltic Pump
Gravity: digital peristaltic pump is a new product developed by DFRobot. This is a new member of our water quality monitoring devices. It is an actu...
Gravity: digital peristaltic pump is a new product developed by DFRobot. This is a new member of our water quality monitoring devices. It is an actuator for the liquid system.
DFRobot peristaltic pump integrates a PPM motor driver on the pump, this is a Gravity interface (PH2.0-3P) motor driver. The control signal is compatible with standard servo motor, you can use Arduino, Raspberry Pi, micro:bit and other kinds of microcontrollers to control its direction and flow speed. The tube in the pump head is made up of BPT material, which is anti-acid and long life.
Peristaltic pumps are a kind of positive displacement pump used for delivering small amounts of fluid. The fluid is contained within a flexible tube fitted inside a circular pump casing. When the rotor rotates continuously, the fluid in the tube will be squeezed and deliver to the other side. In this way, the liquid flow rate can be easily accuracy controlled.
(Excerpt from internet)
As a kind of metering pump, peristaltic pump can be conveniently used for quantitative delivery. It has a wide range of application scenarios, such as science experiment, hydroponics, drip irrigation, tropical fish farming, shrimp cylinder environment control, etc. A large number of titration experiments can be automated with this peristaltic pump, such as potentiometric titration, indicator-based colorimetric titration, pH-based titration, and so on. It is great helpful to improve your working efficiency
At the other hand, peristaltic pumps also have a wide range of applications in food, medical and other industries. Making an automatic coffee machine will be a really good idea!
Arduino Peristaltic Pump
FEATURES
Peristaltic pump
- Low noise,
- Low cost,
- Simple structure,
- Easy to maintain,
- Three rotors with moderate pulsation,
- Non-toxic and pollution-free
Driver board
- Gravity 3Pin digital connector, plug and play
- Servo PPM control signal, driving easily and compatible with Arduino, Raspberry Pi, micro: bit and other controllers.
SPECIFICATION
Driver Board
- Input Voltage: 5V-6V
- Maximum Continuous Operating Current: 1.8A
- Peak Current: 2.5A
- Quiescent Current: <1mA (No PPM Signal Input)
- PPM Signal Resolution: 1us
- Positive Pulse Width of the PPM Signal: 500us-2500us
- Forward Pulse Width Range: 500us-1400us (500us: max forward speed)
- Stop Pulse Width Range: 1400us-1600us
- Inverted Pulse Width Range: 1600us-2500us (2500us: max inverted speed)
- PPM Frequency: 50Hz (Servo Control Signal)
- Connector: Gravity PH2.0-3P
- Size: 27.4 x 28.7 mm/1.08 x 1.13 inches
Peristaltic Pump
- Motor: DC Motor
- Rated Voltage: 6V
- Rated Power: 5W
- Tube Material: BPT
- Tube Specifications: inner diameter 2.5mm, outer diameter 4.5mm
- Pump Head Material: Engineering Plastics
- Pulsation: Three Rollers, Small Pulsation
- Flow: ≥45ml/min (almost 1ml/s)
- Working Conditions: ambient temperature 0 ~ 40 ℃, relative humidity <80%
DOCUMENTS
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- motor driver
- An electronic circuit that lets a low-power controller switch and control a motor that needs more current than the controller pins can safely provide. Checking motor driver support matters because pumps and motors usually cannot be connected directly to a microcontroller output.
- peristaltic pump
- A pump that moves liquid by squeezing flexible tubing in a rolling motion, so the liquid only touches the inside of the tube. This matters for classroom watering projects because it can dose small amounts of water without needing the pump mechanism to be in contact with the water.
- pH
- A measure of how acidic or alkaline a liquid is, on a scale where 7 is neutral. For a water monitoring kit, pH tells you about water chemistry and whether the included probe matches the range and accuracy your project needs.
- ppm
- ppm means parts per million, a common way to express very small gas concentrations in air. For CO₂ sensors, the ppm range tells you what levels the sensor can measure, such as normal indoor air through to poorly ventilated spaces.
- Pulse width range
- The span of control pulse lengths a servo understands, usually measured in microseconds. Matching this range in your code affects how far the servo moves and helps avoid commanding positions outside its intended travel.
- servo
- A servo is a motor with built-in position control, usually told to move to a specific angle by a control signal. It matters when you need repeatable movement, such as steering, arms, flaps, or linkages, rather than continuous spinning.
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Brands
Supplier page — dfrobot.com
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