H-Flow (Optical Flow and Distance Sensor Module)

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    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
     
    Reference Links
    • Setup Guide
    • Firmware Setup & Upgrade
    • Pinout
    • AFBR-S50LV85D Datasheet
    Package Includes:
    • 1x H-Flow
    • 4-pin GH cable
    • 2x M2.5 Screws
    • 2x M2.5 Nylon Locking Hex Nuts
    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)
    Dimension (With Case)

    Dimension (PCB Only)