What is it?

The Tiny Peristaltic Fluid Liquid Pump Breakout Board is designed for projects where precise liquid droplet control is important. Featuring an integrated micro stepper motor along with a DRV8833 driver IC, this breakout board delivers unparalleled accuracy in handling fluids, making it perfect for applications requiring small, consistent droplet dispensing. Its compact size and ease of integration make it ideal for DIY enthusiasts, engineers, and researchers alike. See Demo Video Below.

A peristaltic pump is a type of positive displacement pump used to move fluids through flexible tubing. It operates based on a process called peristalsis, where a series of rollers or shoes compress and release the tubing in a wave-like motion, pushing the fluid forward. Inside the pump, there are rotating rollers or shoes that press against the flexible tube. As these rollers move, they compress the tubing, creating a seal that prevents backflow. The rollers then move along the tube, releasing the compression, which allows more fluid to enter and pushes it forward. The speed of the rollers’ rotation controls the flow rate, making peristaltic pumps highly controllable and suitable for precise applications.

Key Features

• Precision Droplet Dispensing: Achieve precise control for dispensing liquids at the droplet level, allowing for accurate and consistent delivery of fluids in small droplet increments. This level of precision ensures reliability for applications requiring meticulous fluid handling, such as scientific experiments or intricate creative projects.

• Micro Stepper Motor Integration: Fine-grained motor control ensures smooth and precise forward and backwards movement of the pump rollers, enabling consistent droplet formation.

• Sterile and Contamination-Free: With only the flexible tubing contacting the liquid, the pump ensures contamination-free operation, perfect for sensitive fluids.

• Easy Integration: Featuring an integrated stepper driver IC, it streamlines connections to development boards such as Arduino, Raspberry Pi, or custom microcontrollers.

• Compact Design: The small form factor fits effortlessly into tight spaces, perfect for portable and embedded systems.

This breakout board has an onboard DRV8833 stepper driver IC, so you can use open source stepper motor libraries such as: Stepper

The breakout board pinouts are the following:

• VIN (3.3V)
• EN (Enable)
• FLT (Stepper Fault output)
• GND (Ground)
• A1 (stepper input)
• A2 (stepper input)
• B1 (stepper input)
• B2 (stepper input)
• GND

Unique Use Cases

• Laboratory Pipetting Systems: Deliver precise droplets for chemical mixing, biological assays, or reagent dispensing.

• Automated Gardening: Dispense measured droplets of water or liquid nutrients for individual plants in hydroponic or micro-garden setups.

• Food and Beverage Applications: Dispense droplets of syrups, flavorings, or other liquid ingredients in custom drink and food machines.

• Artistic Creations: Precisely control paint or dye droplets for intricate artwork or automated design systems.

• Miniature Biotech Devices: Enable droplet-level fluid movement in microfluidic systems, portable diagnostic tools, or sample collection kits.