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)

 

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