Giraffe User Manual


1 Product Introduction

​ HandsFree Giraffe intelligent composite robot inherits the lineage of HandsFree robot series with high generalization and high expansion. Support more than ten mainstream lidars such as SLAMTEC and Hokuyo, support computing platforms such as industrial computer, TK1, TX1/2, Upboard, Raspberry Pi, etc., support Xtion1/2, Kinect1/2, ZED Stereo Camera and other mainstream cameras, software The system is perfectly adapted to ROS's Movelt, TF, Navigation and other subsystems. In addition, the sturdy and highly reliable structural design enables Giraffe to support HandsFree large robotic arms and UR3/5 robotic arms to meet the task requirements of more service robots.


2 Package Contents

The list of Giraffe high-end shipments is as follows, the following list is for reference only

No. Name Image Quantity
1 Giraffe Robot Body x1
2 Battery Charger (25.2V/3A) x1
3 PS3 controller remote control x1
4 Depth Camera x1
5 Mouse and Keyboard x1
6 Tools Kit x1
7 Experiment Manual x1
8 Equipment Warranty Card / Service Manual x1
9 Equipment factory test sheet x1
10 Equipment Certificate x1

3 Product Overview

3.1 The Basic

No. Description
A 2DOF gimbal
B Microphone Array
C High-strength struts
D 70KG large load capacity
E Binocular Camera
F High-precision LiDAR
G Main Power Switch
H Host cooling system
I Multiple Ultrasonic Sensors
J Anti-collision sensor
K 6.5 inch hub motor

No. Description
L Depth Camera
M Emergency Brake Switch
N 15.6 inch IPS HD monitor
O Secondary development interface
Multiple power output
P Pro Robot Controller
Q Discrete Graphics Host (Machine Learning)
R LCD battery indicator
S Independent Suspension
T Four large load-bearing wheels

3.3 Status indication

​Users can identify the status of robot through the voltmeter, the buzzer and lights mounted on Giraffe.

Status Description
Current voltage The current battery voltage can be read from the voltmeter on the rear electrical interface and with an accuracy of 0.1V
Low voltage alarm When the battery power is lower than 15% or the voltage is lower than 22V, the car body will emit a harsh sound of "beep-beep-beep" as warning. When it is detected that the battery power is lower than 10% or the voltage is lower than 21V, in order to prevent battery damage, Giraffe will actively cut off the external expansion power supply and driver power supply. At this time, the chassis will not be able to perform motion control and accept external command control
Power on TWhen powered on, the buzzer will make a "beep" sound, and the power display module and the screen will light up

3.2 PS3 controller tutorial

​ The PS3 handle remote control is an accessory of Giraffe products. Using the PS3 handle can easily control the Giraffe robot. In this product, we use the left-hand throttle design. ​ The functions of the buttons are defined as: the left joystick controls the movement of the chassis, and the right joystick controls the movement of the top servo.

Tutorial:
  • Before starting the PS3 controller remote control, you need to insert the receiver into Giraffe's USB port
  • Make sure the chassis emergency stop switch is turned on, the emergency stop switch pops up to control mode, press it to enter safe mode
  • Press and hold Lai Shida's logo button to power on
  • Giraffe runs the chassis driver and the ps3 handle driver (HandsFree WiKi tutorial PS3 control chapter)
  • The left joystick controls the movement of the chassis, and the right joystick controls the movement of the top servo

3.3 Safety Information

3.3.1 Environment Considerations

  • For the first use,please read this manual carefully to understand the basic operating content and operating specification.
  • Use Giraffe always under -20℃~45℃ ambient temperature.
  • If Giraffe is not configured with separate custom IPprotection, its water and dust protection will be IP22 ONLY.
  • Make sure that each device has sufficient power.
  • Make sure Giraffe does not have any obvious defects.
  • Check if the remote controller battery has sufficient power.

3.3.2 Check

  • Please charge in time when the device is low battery alarm.
  • When Giraffe has a defect, please immediately stop using it to avoid secondary damage.
  • When device has had a defect, please contact the relevant technical to deal with it, do not handle the defect by yourself.

3.3.3 Operation

  • When using, make sure the emergency stop switch has been released.
  • In remote control operation, make sure the area around is relatively spacious.
  • Carry out remote control within the range of visibility.
  • The maximum load of Giraffe is 20kg, when in use, make sure the payload does not exceed 20kg.
  • When installing an external extension on Giraffe, confirm the position of the center of mass of the extension and make sure it is at the center of rotation.

3.3.4 Charging

  • Giraffe products are equipped with a charger by default, which can meet the charging needs of customers;
  • We recommend that you turn the robot off before charging. And there is no indicator light provided on the site while charging. For specific indicator lights, please refer to the description on the charger.
  • Make sure that the Giraffe chassis is in a power-off state;
  • Please make sure the main switch is off before charging;
  • When charging, make sure the ambient temperature is greater than 0°C;
  • Insert the plug of the charger into the charging port of the chassis;
  • Connect the charger to power supply and turn on the switch in the charger. Then, the robot enters the charging state;

3.3.5 Maintenance

  • According to the IP protection level of the device,please use Giraffe in the environment with the protection level requires for the equipment.

4 Performance parameters

Projects Indicators
Net Weight 38kg
Dimensions 399x411x1502mm
Load 65Kg
Maximum speed 1.2m/s
Endurance time 10-15h
Steering Two-wheel differential drive, active wheel with independent suspension
Obstacle crossing ability 15mm
Power Expansion 19V/3A x 1, 24V/30A x 2, 12V/3A x 2,
USB 5V/2A x 2, one emergency stop 24V/30A
Internal Sensors Integrated Encoder, Gyroscope, Magnetometer, Barometer, Expandable Ultrasonic/Infrared Sensor
Supported Devices Rplidar A1/A2/A3, Hokuyo LiDAR, Xtion1/2, Raspberry Pi, IPC, Dobot Arm 1/2, Lightweight 6-axis Robot Arm

5 Main Components

5.1 Camera Specifications

Camera Item Parameter
Depth 3D Technology ORBBEC Monocular Structured Light
Working Range 0.6-8cm
Accuracy 1m
Field of View (FOV) H 58.4° x V 45.7°
Resolution@Frame Rate 1280x1024@7fps
640x480@30fps
320x240@30fps
160x120@30fps
Deep processing chip MX400
Proximity protection Support
RGB Field of View H 66.10° x V 40.2°
Working Range 1280x1024@7fps
640x480@30fps
320x240@30fps
UVC Support
Others Supported Operating Systems Android/Linux/Windows
Work Environment Indoor
Data Interface USB2.0
Dimensions 164.85x48.25x40(mm)
Microphone Binaural Stereo
Power consumption <2.5W
Working temperature 10°C~40°C
Rating Class 1 Laser
USB long cable 1.5M

5.2 Lidar (A3)

5.2.1 Performance parameters

Project Parameter
Measuring distance 25m
Sampling frequency 16KHz
scanning frequency 10KHz
Angular resolution 0.225°
Communication Interface TTL UART
communication rate 256000bps

5.2.2 Communication Interface

Color Signal name Type Discription Minimum Typical value Maxmum
red VCC power total power supply 4.9V 5V 5.5V
yellow TX out Ranging core serial output 0V 3.3V 3.5V
green RX in Ranging core serial input 0V 3.3V 3.5V
black GND power ground wire 0V 0V 0V
blue MOTOCTL in Scan motor enable/PWM control 0V 3.3V 5V

6 Expansion Board

On the robot, We also provide users with power extension interfaces for expanded applications. The details are as follows:

No. Type Description
A MR30 Female 5V/12V
B USB communication interface
C Emergency stop switch interface Emergency stop switch
D XT30 Female Power Supply
E Gimbal pick
F Gimbal Yaw
G DC5525 Charging port
H XT60 Female 24V

7 Q&A

Q: Giraffe is started up correctly, but why cannot the RC transmitter control the robot body to move?

A: First, check whether the E-stop switches are released; then, check whether the controlmode selected with the top left mode selection switch on the RC transmitter is correct.

Q: Giraffe gives "beep-beep-beep..." sound while running, how to deal with this problem?

A: If Giraffe give this "beep-beep-beep" sound continuously, it means the battery is in the alarm voltage state. Please charge the battery in time.

Q: Why is the Giraffe on but the screen remains black?

A: The shaking during transportation may cause the signal cable to become loose. We recommend that you try pluging the cable back in.

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