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  • Overview
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  1. Peripherals
  2. H-Flow (DroneCAN)

Overview

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.

Specification

  • 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)

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Last updated 5 months ago

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