:-) smile man

ROS 는 ubuntu에 깔린다고 함

Install ROS Kinetic on Raspberry Pi 3 <Ubuntu MATE 16.04.2.>

https://www.instructables.com/How-to-Install-ROS-Kinetic-on-Raspberry-Pi-3/

Install ROS Melodic on Raspberry Pi 3 <Ubuntu MATE 18.04.>

https://roboticsbackend.com/install-ros-on-raspberry-pi-3/

Raspbian, which is itself created from Debian.

Unfortunately ROS is not supported on Debian.

라즈비안 데비안 2021-03-04-raspios-buster-armhf-full.img 14GB class10 SD메모리에 설치

  --한글폰트명령 : sudo apt-get install fonts-unfonts-core

ubuntu-mate-20.04.1-desktop-arm64+raspi.img 설치됨 5/16오후 8G메모리카드.

ubuntu-mate-20.10-desktop-armhf+raspi.img 32bit임 설치됨.느림. 5/16아침. SD메모리가 Aview 16GB에설치

ubuntu-mate-20.04.1-desktop-armhf+raspi.img.xz 부팀멈춤. SD메모리 8GB여서 그런가?

ubuntu-18.04.5-preinstalled-server-arm64+raspi3.img 서버버전(Text only). GUI설치 후 부팅멈춤. 

    데스크탑 버전은 GUI가 설치된 버전, 서버 버전은 텍스트 기반 저용량

    ubuntu 18.04 서버 버전에 GUI설치 방법 : https://changun516.tistory.com/75

ubuntu-mate-20.04.1-desktop-arm64+raspi.img.xz 느리게 동작함. SD메모리 8GB여서 그런가?

https://vanilet.tistory.com/16 

Ubuntu 18.04 설치후 유선랜, 무선랜 다 안될때

/etc/netplan/50-.....yaml  파일을 편집하면 된다

중요한건 들여쓰기를 꼭 지켜야 하는데, 탭 으로 들여쓰지 말고 4칸씩 들여써야 인식된다!!

계속 화면이 꺼져서 OS 이미지를 다시 설치함..ㅠ ==> 원인은 HDMI to VGA 컨버터 불량 의심 (뜨거워짐)

라즈베리파이 버전에 따라 설치가능한 우분투 버전부터 체크했어야 함

https://ubuntu-mate.org/raspberry-pi/compatibility/

armhf (ARM hard Float)가 좀더 가벼움

http://wiki.ros.org/ROSberryPi/Installing%20ROS%20Kinetic%20on%20the%20Raspberry%20Pi

라즈비안(데비안)에 ROS 설치하는 방법이 있었음.. 우분투에 설치하려고 하다가 시간허비..ㅠ

게다가 이미 ROS까지 설치된 이미지도 있다고 한다!!

An SD Card Image with Ubuntu 16.04 (LXDE) and ROS Kinetic installed can be downloaded here for the Raspberry Pi 3  

/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl.cpp:32:41: warning: ‘MSB_BUFFER’ defined but not used [-Wunused-variable]
 static boost::array<char, HEX_SIZE_TWO> MSB_BUFFER, LSB_BUFFER;
                                         ^
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl.cpp:32:53: warning: ‘LSB_BUFFER’ defined but not used [-Wunused-variable]
 static boost::array<char, HEX_SIZE_TWO> MSB_BUFFER, LSB_BUFFER;
                                                     ^
cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/build.make:86: recipe for target 'cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/src/cyglidar_pcl.cpp.o' failed
make[2]: *** [cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/src/cyglidar_pcl.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp: In function ‘uint8_t cloudScatter_2D()’:
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp:183:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp: In function ‘uint8_t cloudScatter_3D()’:
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp:278:92: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
                     scan_3D.get()->points[index_3D].rgb = *reinterpret_cast<float*>(&rgb_3D);
                                                                                            ^
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp:289:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp: In function ‘void running()’:
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp:365:15: error: ‘class cyglidar_pcl_driver::cyglidar_pcl’ has no member named ‘packet_run’
         laser.packet_run(VERSION_NUM);
               ^
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp:367:15: error: ‘class cyglidar_pcl_driver::cyglidar_pcl’ has no member named ‘packet_frequency’
         laser.packet_frequency(FREQUENCY_LEVEL);
               ^
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp:369:15: error: ‘class cyglidar_pcl_driver::cyglidar_pcl’ has no member named ‘packet_pulse’
         laser.packet_pulse(VERSION_NUM, PULSE_CONTROL, PULSE_DURATION);
               ^
/home/orasman/catkin_ws/src/cyglidar_d1/src/cyglidar_pcl_publisher.cpp:359:9: warning: unused variable ‘sizePos’ [-Wunused-variable]
  size_t sizePos = 2;
         ^
cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/build.make:62: recipe for target 'cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/src/cyglidar_pcl_publisher.cpp.o' failed
make[2]: *** [cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/src/cyglidar_pcl_publisher.cpp.o] Error 1
CMakeFiles/Makefile2:668: recipe for target 'cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/all' failed
make[1]: *** [cyglidar_d1/CMakeFiles/cyglidar_pcl_publisher.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2
Invoking "make -j4 -l4" failed
orasman@orasman-A515-K-AFLUL:~/catkin_ws$