Description

PX4FLOW is a smart optical flow sensor. The sensor has a native 752 x 480 pixel resolution. The optical flow is calculated using a 4x grading and cropping algorithm. The calculation speed is 250Hz (daytime, outdoor) with very high sensitivity. Unlike other mouse sensors, it can operate in indoor or outdoor dim light at 120Hz (dark, indoor) calculations without the need to illuminate the LEDs. You can also reprogram it to perform other basic, efficient low-level machine vision tasks. The PX4FLOW (Optical Flow) Sensor is a specialized high resolution downward pointing camera module and a 3-axis gyro that uses the ground texture and visible features to determine aircraft ground velocity. Although the sensor is with a Maxbotix LZ-EZ4 sonar to measure height, this has not been reliable enough over a range of surfaces in testing, so its readings are not used.

Specifications

• STM32F407, 168 MHz Cortex M4 core processor (128 + 64 KB RAM).

• 752 × 480 MT9V034  CMOS image sensor.

• L3GD20  3-axis gyroscope.

• 16 mm  M12  lens  (Integrated IR filter).

• Dimensions: 48  mm  x 38mm.

• Power consumption:  115mA/5V.

• This is compatible for Pixhawk Flight Controller.

• Optical flow processing at 4×4 grading image at 120 (indoor) to 250 Hz (outdoor).

• Superior light sensitivity with 24×24 μm super-pixels.

• Onboard 16bit gyroscope up to 2000°/s and 780 Hz update rate, default high precision-mode at 500°/s.

• Onboard sonar input and mount for Maxbotix sonar sensors.

• PX4 Flow comes with the sonar and accessories so you can mount it simply.

• USB serial up to 921600 baud (including live camera view with QGroundControl).

• USB power option.

• USB bootloader.