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.

feature

• 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

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)

package includes:

• 1x h-flow

• 4-pin gh cable

• 2x m2.5 screws

• 2x m2.5 nylon locking hex nuts

dimension

pcb only