Overview: The Holybro H-Flow is a compact optical flow and distance sensor module that combines a PixArt PAA3905E1 optical flow sensor, a Broadcom AFBR-S50LV85D distance sensor, and an InvenSense ICM-42688-P 6-axis IMU. This all-in-one design simplifies installation, while the onboard infrared LED enhances visibility in low-light conditions. The H-Flow features a Pixhawk-standard 4-pin CAN connector, ensuring seamless integration with Pixhawk-compatible controllers via the CAN port. Utilizing the DroneCAN protocol, it offers reliable and high-speed data transmission between the sensor and the flight controller. Features: • Integrated Optical Flow and Rangefinder Module • PixArt Optical Flow Sensor for Accurate Motion Tracking • Broadcom ToF Sensor for Precise Distance Measurement • Infrared LED for Optical Low-Light Performance • DroneCAN Protocol Specifications: • PixArt PAA3905E1 Optical Flow Sensor - Tracks under low light conditions of >5 lux - Effective Viewing angle up to 42° - Wide working ranges from 80mm up to 30m - Up to 7.4 rad/s - 40mW IR LED built onto the board for improved low-light operation • Broadcom AFBR-S50LV85D Time-of-Flight Distance Sensor - Integrated 850 nm laser light source - Field-of-View (FoV) of 12.4° x 6.2° with 32 pixels - Typical distance sensing range up to 30m - Operation of up to 200k Lux ambient light - Works well on all surface conditions - Transmitter beam of 2° x 2° to illuminate between 1 and 3 pixels • InvenSense ICM-42688-P 6-Axis IMU • STM32F412CEU6 MCU • Pixhawk Standard CAN Connector (4 Pin JST GH) • Compact Form Factor • Software-Controlled CAN Termination • Weight: 15.2g (3.5g without casing)
