CJMCU-3901 PMW3901 Optical Flow Sensor
 
PWM3901 is a product generally used in drone projects. It is used in motion detection and speed detection with the optical flow sensor on it.
 
Features:
- Supply voltage: 1.8- 3.6v
 - Operating range: 80mm to +∞
 - Interface: 4-wire SPI @ 2MHz
 - 16-bit motion data registers
 - < Power consumption of run mode @ 9 mA
 - No internal oscillator-clock input required
 - No lens focusing required during lens mounting process