PMW3901 Optical Flow Sensor Module XY Translation | SPI

PMW3901 Optical Flow Sensor Module – XY Translation

The PMW3901 Optical Flow Sensor Module is a compact, high-performance sensor designed to detect XY surface translation with exceptional accuracy. Whether you're building a drone, autonomous robot, or motion-tracking project, this module delivers reliable, low-latency motion data to power your next DIY electronics build.

Key Features

• PMW3901 Chip: Industry-proven optical flow sensor capable of detecting XY translational motion with high precision
• SPI Interface: Fast and simple integration with microcontrollers including Arduino, Raspberry Pi, and STM32 platforms
• Wide Operating Range: Performs consistently across varying surface textures and lighting conditions
• Compact Form Factor: Small, lightweight PCB footprint makes it ideal for drones, robotics, and embedded systems
• Low Power Consumption: Efficient design suited for battery-powered applications
• High Frame Rate: Rapid data output for real-time motion feedback and navigation systems
• Plug-and-Play Breakout: Pre-soldered headers for quick prototyping and integration

Specifications

• Sensor: PMW3901MB
• Interface: SPI
• Supply Voltage: 3.3V
• Motion Detection: XY optical flow (surface translation)
• Typical Use Cases: Drones (UAV positioning), robotics, optical mouse controllers, indoor navigation

Applications

• UAV / Drone indoor positioning and stabilization
• Autonomous ground robots for obstacle avoidance and path tracking
• DIY electronics and embedded motion-sensing projects
• Prototyping with Arduino, Raspberry Pi, or other SPI-compatible boards

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Frequently Asked Questions

Q: What does the PMW3901 Optical Flow Sensor Module measure?

A: The PMW3901 module measures XY surface translation — it detects relative motion across a surface by analyzing optical patterns frame by frame, outputting motion data (delta X and delta Y) via SPI communication. It is widely used in drone stabilization and robotics navigation.

Q: What microcontrollers and platforms are compatible with the PMW3901 module?

A: The PMW3901 communicates via a standard SPI interface and is compatible with a broad range of microcontrollers, including Arduino (Uno, Mega, Nano), Raspberry Pi, STM32, and ESP32. Most platforms have community-supported libraries available to simplify integration.

Q: What voltage does the PMW3901 Optical Flow Sensor Module require?

A: The module operates at 3.3V logic and supply voltage. Ensure your development board or circuit provides a regulated 3.3V supply and uses 3.3V logic levels on the SPI lines, or use a level shifter when interfacing with 5V systems.

Q: Is the PMW3901 suitable for indoor drone positioning?

A: Yes — the PMW3901 is one of the most popular sensors for indoor UAV / drone positioning where GPS is unavailable. It provides accurate XY velocity estimation by tracking surface features below the drone, enabling stable hover and precise movement control.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.