Help with rplidar sdk installation and port error on ubuntu 16.10
Hello I'm a beginner on the ROS and linux world
I'm using a rplidar to get the laser map, however after the installation instruction from ROS kinetic tutorial I'm getting an error when after writing the command
roslaunch rplidar_ros view_rplidar.lanuch
it gives me this error
Error,cannot bind to the specfifed serial port/dev/ttyUSB0
Then, I thought I had to download the driver which the SDK zip file from the rplidar website After that, when I go to my downloads directory
cd downloads ls
it show that I have the zip file
rplidar_sdk_v1.5.7.zip
and now I'm stuck, I don't how to unzip this file
I have tried this but it did not work
unzip"rplidar_sdk_v1.5.7.zip"
Also, I tried to look online for the port issue, but did not found a solution I tried the
ultra_simple /dev/ttyUSB0
and also
chmod /dev/ttyUSB0
but none of them work
Sorry for the bad explanation but I'm kinda lost
Thank you
UPDATE :
After using ls /dev when the lidar is connected , here is what i get
hamzh@hamzh-VirtualBox:~$ ls /dev/
autofs loop4 stderr tty35 tty8 ttyS8
block loop5 stdin tty36 tty9 ttyS9
bsg loop6 stdout tty37 ttyprintk uhid
btrfs-control loop7 tty tty38 ttyS0 uinput
bus loop-control tty0 tty39 ttyS1 urandom
cdrom mapper tty1 tty4 ttyS10 userio
char mcelog tty10 tty40 ttyS11 vboxguest
console mem tty11 tty41 ttyS12 vboxuser
core memory_bandwidth tty12 tty42 ttyS13 vcs
cpu_dma_latency mqueue tty13 tty43 ttyS14 vcs1
cuse net tty14 tty44 ttyS15 vcs2
disk network_latency tty15 tty45 ttyS16 vcs3
dri network_throughput tty16 tty46 ttyS17 vcs4
dvd null tty17 tty47 ttyS18 vcs5
ecryptfs port tty18 tty48 ttyS19 vcs6
fb0 ppp tty19 tty49 ttyS2 vcs7
fd psaux tty2 tty5 ttyS20 vcsa
full ptmx tty20 tty50 ttyS21 vcsa1
fuse pts tty21 tty51 ttyS22 vcsa2
hidraw0 random tty22 tty52 ttyS23 vcsa3
hpet rfkill tty23 tty53 ttyS24 vcsa4
hugepages rtc tty24 tty54 ttyS25 vcsa5
hwrng rtc0 tty25 tty55 ttyS26 vcsa6
i2c-0 sda tty26 tty56 ttyS27 vcsa7
initctl sda1 tty27 tty57 ttyS28 vfio
input sda2 tty28 tty58 ttyS29 vga_arbiter
kmsg sda5 tty29 tty59 ttyS3 vhci
lightnvm sg0 tty3 tty6 ttyS30 vhost-net
log sg1 tty30 tty60 ttyS31 vhost-vsock
loop0 shm tty31 tty61 ttyS4 zero
loop1 snapshot tty32 tty62 ttyS5
loop2 snd tty33 tty63 ttyS6
loop3 sr0 tty34 tty7 ttyS7
When the lidar is not connected, here is what I get
autofs full loop5 pts stdout tty22 tty38 tty53 ttyS1 ttyS25 userio vcsa6
block fuse loop6 random tty tty23 tty39 tty54 ttyS10 ttyS26 vboxguest vcsa7
bsg hidraw0 loop7 rfkill tty0 tty24 tty4 tty55 ttyS11 ttyS27 vboxuser vfio
btrfs-control hpet loop-control rtc tty1 tty25 tty40 tty56 ttyS12 ttyS28 vcs vga_arbiter
bus hugepages mapper rtc0 tty10 tty26 tty41 tty57 ttyS13 ttyS29 vcs1 vhci
cdrom hwrng mcelog sda tty11 tty27 tty42 tty58 ttyS14 ttyS3 vcs2 vhost-net
char i2c-0 mem sda1 tty12 tty28 tty43 tty59 ttyS15 ttyS30 vcs3 vhost-vsock
console initctl memory_bandwidth sda2 tty13 tty29 tty44 tty6 ttyS16 ttyS31 vcs4 zero
core input mqueue sda5 tty14 tty3 tty45 ...
Have you checked that the lidar is indeed connected to
/dev/ttyUSB0?How do I do that ? I checked
ls/devand
ttyUSB0 is not on the listYes
ls /dev/is how you do it and if you don't havettyUSB0in the list when your Lidar is connected then the issue is normal. Have you anotherttyUSBin the list ? If so then change within the launch filettyUSB0to yourttyUSB.If you have mutliples
ttyUSBthen checkls /dev/with the lidar deconnected, then connected to see which one is missing between the two testsI don't have any
ttyUSBwhen I checkls /dev/With your Lidar connected ?
Yes, I'm not sure if I need to unzip the drive ?
Normally no but it's weird that you don't have any
ttyUSB, can you edit your question and post the result ofls /dev/when the lidar is connected and then deconnected ?