A miniature peristaltic mechanism moves liquid by compressing flexible tubing. Pairing it with a micro stepper motor provides incremental motion for experiments with small-volume dispensing.

The breakout includes a DRV8833 driver and specifies a 3.3V input. A host controller supplies the motor sequence to move the pump. Measure the delivered volume in the actual setup before relying on it for repeatable dispensing; tubing and operating conditions are part of that experiment.

Product: https://www.questwiseventures.com/products/tiny-peristaltic-fluid-liquid-pump-breakout-board