PMW3901 SPI Optical Flow Sensor Module

Add optical motion data to a robotics project with a PMW3901 sensor module for compatible X-Y movement applications.

✅ Observe movement relative to a visible surface - Optical flow provides motion information for a suitably configured sensing arrangement.

✅ Connect through a common embedded interface - A four-wire SPI interface provides a data path to compatible host electronics.

✅ Explore motion input where GPS is unavailable - The module offers an optical sensing input for projects using local movement observations.

Build the motion estimate into your host system

Optical flow measures changes in the viewed scene rather than providing a complete position solution on its own. The PMW3901 supplies motion information that a host controller can combine with the rest of the project.

Surface texture, lighting, distance and integration affect useful operation. Confirm the power and SPI requirements before wiring, and test the finished arrangement instead of assuming the module alone provides navigation or automatic flight control.

Technical details

• Module: PMW3901 / CJMCU-3901
• Function: optical-flow motion sensing
• Supply: 1.8-3.6 V
• Interface: four-wire SPI, up to 2 MHz as specified
• Package: one sensor module
• Compatible host controller and software required

Add optical-flow data to your supported robotics-development setup.