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Autonomous ground robots (2WD, 4WD, Ackermann Steering, Mecanum Drive)

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linorobot/linorobot

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linorobotBuild Status

Linorobot is a suite of Open Source ROS compatible robots that aims to provide students, developers, and researchers a low-cost platform in creating new exciting applications on top of ROS.

You can also check out the ROS2 port of this projectlinorobot2.

Tutorial

You can read the full tutorial how to build your robothere.

Multiplatform

Supports multiple types of robot base:

  • 2WD
  • 4WD
  • Ackermann Steering
  • Mecanum drive

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Works on:

  • ROS Indigo (Ubuntu 14.04)
  • ROS Kinetic (Ubuntu 16.04)

Hardware

Fabricate your own Teensy 3.1/3.2shield,

alt textalt text

or wire it on your own. Wiring diagrams are also provided.alt text

Supported IMUs:

  • GY-85
  • MPU6050
  • MPU9150
  • MPU9250

The IMU drivers are based oni2cdevlib.

Supported Motor Drivers:

  • L298 (MAX: 35V, 2A)
  • BTS7960 (MAX: 24V, 43A)
  • Electronic Speed Controllers (ESC) w/ Reverse.This has been tested to control brushless motors used in RC cars and hoverboards.

Supported ROS Compatible Sensors:

  • XV11 Lidar
  • RPLidar
  • YDLIDAR X4
  • Hokuyo (SCIP 2.2 Compliant)
  • Intel RealSense R200
  • Kinect

Tested on Linux compatible ARM dev boards:

  • Raspberry Pi 3/B+
  • Jetson TK1
  • Jetson TX1
  • Odroid XU4
  • Radxa Rock Pro
    **Technically this should also work with any ARM dev board at least (1GB RAM) that runs Ubuntu Trusty or Xenial.

Installation

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git clone https://github.com/linorobot/lino_install && cd lino_install./install <base> <sensor>

Firmware

Flexible and configurable components.linorobot_ws/teensy/firmware/lib/config/lino_base_config.h

Robot base configuration:

//uncomment the base you're building#define LINO_BASE DIFFERENTIAL_DRIVE// #define LINO_BASE SKID_STEER// #define LINO_BASE ACKERMANN// #define LINO_BASE ACKERMANN1// #define LINO_BASE MECANUM

IMU configuration:

//uncomment the IMU you're using#define USE_GY85_IMU// #define USE_MP6050_IMU// #define USE_MPU9150_IMU// #define USE_MPU9250_IMU

Motor driver configuration:

//uncomment the motor driver you're using#define USE_L298_DRIVER// #define USE_BTS7960_DRIVER// #define USE_ESC

Motor configuration:

//define your robot' specs here#define MAX_RPM 330               // motor's maximum RPM#define COUNTS_PER_REV 1550       // wheel encoder's no of ticks per rev#define WHEEL_DIAMETER 0.10       // wheel's diameter in meters#define PWM_BITS 8                // PWM Resolution of the microcontroller#define LR_WHEELS_DISTANCE 0.235  // distance between left and right wheels#define FR_WHEELS_DISTANCE 0.30   // distance between front and rear wheels#define MAX_STEERING_ANGLE 0.415  // max steering angle. This only applies to Ackermann steering

Uploading the codes:

cd ~/linorobot_ws/src/linorobot/teensy/firmwareplatformio run --target upload

Creating a Map

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Launch base driver:

roslaunch linorobot bringup.launch

Launch mapping packages:

roslaunch linorobot slam.launch

Autonomous Navigation

IMAGE ALT TEXT

Launch base driver:

roslaunch linorobot bringup.launch

Launch navigation packages:

roslaunch linorobot navigate.launch
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