The Holybro PMW3901 Optical Flow Sensor is a UART version of PMW3901 module with built in BEC. It comes pre-solder with 6pin JST GH connector made to connect right to TELEM ports on most flight controller. Compatible with PX4 (PX4 Guide) & Ardupilot (Data format same as discontinued product CX-OF).

Technical details:

• Dimension: 14x11x5mm
• Weight: 0.6g
• Interface: UART
• Baud rate: 19200
• FPS: 95hz
• Power: 2.0~3.6V
• Current: 10mA

Data Format:

• byte0: header (0xFE)
• byte1: number of data bytes (0x04)
• byte2: x-motion high byte
• byte3: x-motion low byte
• byte4: y-motion high byte
• byte5: y-motion low byte
• byte6: checksum
• byte7: surface quality
• byte8: footer (0xAA)