RadioLink SUI04 User Manual

RADIOLINK ELETRONIC LIMITED
www.radiolink.com
- 1 -
Ultrasonic Sensor SUI04
User Manual
Parameters:

Size: 20*22*19mm

Weight: 8g (with wires)

Input voltage: 4.5~5.5V(do not support HV)

Current: 18mA@5V

Power: 90mA

Operating temperature: -20
°
C~80
°
C

Detection distance: 40cm~450cm

Detecting precision: 0.1cm
 Acoustic emission frequency: 40±1.0KHz
 Beam angle: 60°(transmitting receiving hybrid)

Fade area: 0 (it will show 40cm)

Output protocol: I2C

Duty Cycle: 30ms
Introduction：
SUI04 is a ultrasonic ranging sensor transceiver and compatible with PIXHAWK and MINI PIX. It
helps drones achieve autonomously omnibearing obstacle avoidance including 4 horizontal
directions, upward side and altitude hold downward. The detection distance of SUI04 is 40cm to
450cm.
Function One：Obstacle Avoidance
I. Firmware support
Obstacle avoidance firmwares are available with the below 2 links then uploaded to the flight
controller (PIXHAWK/ MINI PIX) by Mission Planner.
WARNING: Other firmwares do not support this obstacle avoidance function.
Notice: RADIOLINK firmwares are modified from Copter V3.5.7. When it’s uploaded, the previous
functions and parameters are remained and there’s no need to readjust.
MINIPIX firmware link as below:
http://www.radiolink.com.cn/firmware/Copter/ultrasonic_avoid/Multiple/minipix.px4

RadioLink SUI04 Specifications

General

Brand	RadioLink
Model	SUI04
Category	Accessories
Language	English

Summary

Introduction and Sensor Specifications

Introduction to SUI04

Overview of the SUI04 ultrasonic ranging sensor and its compatibility with flight controllers.

SUI04 Technical Parameters

Detailed specifications including size, voltage, current, detection range, precision, and beam angle.

Obstacle Avoidance Setup

Firmware Support

Information on required firmware versions and compatibility for obstacle avoidance.

Connection to Flight Controllers

Guide for connecting SUI04 to PIXHAWK and MINIPIX via I2C.

Mission Planner Parameter Configuration

Setting PRX_TYPE, AVOID_MARGIN, and AVOID_ENABLE for obstacle avoidance.

Transmitter Control for Avoidance

Enabling/disabling obstacle avoidance via transmitter switch (CH7).

Collision Avoidance Upward

Setting Upward Collision Avoidance

Configuring the SUI04 for upward direction using button presses.

Data Logging and Analysis

Steps for downloading and reviewing DataFlash logs for sensor validation.

Alt-Hold Function Downward

Connecting SUI04 for Alt-Hold

Guide for connecting SUI04 to PIXHAWK and MINIPIX for Alt-Hold.

Mission Planner Parameter Configuration

Setting RNGFND_MAX_CM and RNGFND_MIN_CM for Alt-Hold function.

Transmitter Control for Alt-Hold

Enabling/disabling Alt-Hold via transmitter switch (CH8).