Instructions for getting started - Revision history

Jca: /* DNSMASQ */

2021-12-25T11:47:10Z

DNSMASQ

← Older revision		Revision as of 13:47, 25 December 2021
Line 207:		Line 207:

	ssh local@192.168.17.1		ssh local@192.168.17.1

			==Raspicam ==

			To be used from C++ direct or through openCV.

			A rather short raspberry pi camera API is available from https://www.uco.es/investiga/grupos/ava/node/40.

			And can be downloaded from https://sourceforge.net/projects/raspicam/files/,

			or get the file from sourceforge with no GUI, with (there may be newer versions):

			cd ~/Downloads
			wget --no-check-certificate -O raspicam-0.1.9.zip https://downloads.sourceforge.net/project/raspicam/raspicam-0.1.9.zip?r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Fraspicam%2F%3Fsource%3Dtyp_redirect&ts=1486483484&use_mirror=netix

			Once fetched and available on the raspberry, then
			Unpack and install:
			unzip raspicam-0.1.9.zip
			cd raspicam-0.1.9
			mkdir build
			cd build
			cmake ..
			make -j3
			sudo make install
			sudo ldconfig

			The library is installed in /usr/local, and therefore to make cmake find it the path needs to be added to startup configuration, in file ~/.bashrc

			cd
			nano ~/.bashrc
			add at the end:
			export CMAKE_PREFIX_PATH=/usr/local/lib
			source ~/.bashrc # to implement export

			Test with openCV
			raspicam_cv_test
			That takes 100 images and saves 3.

			=== Camera streamer ===


			To download the project you will need a source control system called git. It may not be installed on a fresh image. I know it’s not on the lite image. So you may need to install it.
			sudo apt-get install git

			Now that you have git installed, use it to clone a copy of the mjpg-streamer to your Pi.

			git clone https://github.com/jacksonliam/mjpg-streamer.git

			After the cloned copy of the mjpeg-stream has been coppied to the raspberry-pi, follow these steps.

			cd mjpg-streamer/mjpg-streamer-experimental/
			make -j4 # optional CMAKE_BUILD_TYPE=Debug
			sudo make install

			Make a script to start the streamer

			cd
			nano start-stream.sh

			copy this into the file (uncomment only one line - the others are examples for other resolutions - edit as desired)

			#!/bin/bash
			#mjpg_streamer -i "input_raspicam.so -y 1600 -x 1200 -fps 5 -rot 90" -o output_http.so
			mjpg_streamer -i "input_raspicam.so -y 972 -x 1296 -fps 3 -rot=0" -o output_http.so
			#mjpg_streamer -i "input_raspicam.so -y 600 -x 800 -fps 3 -rot=0" -o output_http.so
			#mjpg_streamer -i "input_raspicam.so -y 640 -x 480 -fps 5" -o output_http.so

			Change the file to be executable

			chmod +x start-stream.sh

			=== Start streaming at boot ===

			Start of applications can be controlled by the /etc/rc.local script:

			nano /etc/rc.local

			add the following lines before 'exit 0' (close to the end)

			# start camera streaming
			su - local /home/local/start-stream.sh &

			Copy and 'shift-ctrl-v' will do

			Comment the last line (su - local /home/local/start-stream.sh &) if camera streaming should not start.

			to stop streaming use (if started)

			pkill mjpg_streamer


			=== Watch camera stream ===

			When the robot is on a net connection - cable or wifi - you can watch the stream from a browser

			for streaming:
			HTTP://jasmin.local:8080/?action=stream
			or for a snapshot
			HTTP://jasmin.local:8080/?action=snapshot
			where jasmin should be replaced with the robot name, or jasmin.local can be replaced with the IP address.

Jca: /* DNSMASQ */

2021-12-24T09:02:28Z

DNSMASQ

← Older revision		Revision as of 11:02, 24 December 2021
Line 169:		Line 169:
	===DNSMASQ===		===DNSMASQ===

	~~Not~~ needed ~~after ~2020~~		THIS PART IS NOT needed anymore

			To enable the ROBOBOT to be connected directly to a PC, then it is easier if the ROBOBOT provides an IP for the PC.

	Install DNSMASQ		Install DNSMASQ

Jca: /* DNSMASQ= */

2021-12-24T09:01:37Z

DNSMASQ=

← Older revision		Revision as of 11:01, 24 December 2021
Line 167:		Line 167:
	nmap -sP 10.16.175.0/24		nmap -sP 10.16.175.0/24

	===DNSMASQ====		===DNSMASQ===

			Not needed after ~2020

	Install DNSMASQ		Install DNSMASQ

Jca: /* Find IP of robot (Linux) */

2021-12-24T09:01:10Z

Find IP of robot (Linux)

← Older revision		Revision as of 11:01, 24 December 2021
Line 166:		Line 166:
	Use the first part, to get a list of active IP on the net:		Use the first part, to get a list of active IP on the net:
	nmap -sP 10.16.175.0/24		nmap -sP 10.16.175.0/24

			===DNSMASQ====

	Install DNSMASQ		Install DNSMASQ

Jca: /* Find IP of robot (Linux) */

2021-12-24T09:00:40Z

Find IP of robot (Linux)

← Older revision		Revision as of 11:00, 24 December 2021
Line 166:		Line 166:
	Use the first part, to get a list of active IP on the net:		Use the first part, to get a list of active IP on the net:
	nmap -sP 10.16.175.0/24		nmap -sP 10.16.175.0/24

			Install DNSMASQ

			sudo apt install dnsmasq

			allow dnsmasq to provide IP to pear-to-pear networks
			Edit the /etc/dnsmasq.conf (nano is a small text editor, fine for editing configuration files owned by Linux root)

			sudo nano /etc/dnsmasq.conf
			find and change/add the following line (a bit down, eg to serch use: ctrl-W dhcp-range)
			dhcp-range=192.168.17.100,192.168.17.150,12h

			To work, the eth0 must have an IP, if noone provides one,
			change /etc/dhcpcd.conf (dhcp client deamon) to have a default IP, if no DHCP server is available

			Edit of /etc/dhcpcd.conf to have a fall back behaviour for eth0 and eth1.

			sudo nano /etc/dhcpcd.conf
			Add the following lines at the end (uncomment and modify):
			# define static profile
			profile static_eth0
			static ip_address=192.168.17.1/24
			# static routers=192.168.0.1
			# static domain_name_servers=192.168.0.1

			# fallback to static profile on eth0
			interface eth0
			fallback static_eth0


			This will also give a default IP for an eventual second network (usb-to-cable) if needed

			Now, after a reboot, you should be able to connect a PC directly with at network cable to a PC, and the PC should get an IP from the raspberry, so now

			ssh local@192.168.17.1

Jca: /* Find IP of robot (Linux) */

2021-12-17T10:07:49Z

Find IP of robot (Linux)

← Older revision		Revision as of 12:07, 17 December 2021
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	sudo apt-get install nmap		sudo apt-get install nmap
	To search for the Pi using the MAC address in terminal type		To search for the Pi using the MAC address in terminal type
	~~sudo~~ nmap -sP 10.16.175.0/24 \| awk '/^Nmap/{ip=$NF}/B8:27:EB:23:A0:F5/{print ip}'		nmap -sP 10.16.175.0/24 \| awk '/^Nmap/{ip=$NF}/B8:27:EB:23:A0:F5/{print ip}'
	where '''10.16.175''' is the first three sections of the IP you noted down and '''B8:27:EB:23:A0:F5''' is the MAC address of the Pi. This should return the IP of the Pi.		where '''10.16.175''' is the first three sections of the IP you noted down and '''B8:27:EB:23:A0:F5''' is the MAC address of the Pi. This should return the IP of the Pi.

Line 165:		Line 165:

	Use the first part, to get a list of active IP on the net:		Use the first part, to get a list of active IP on the net:
	~~sudo~~ nmap -sP 10.16.175.0/24		nmap -sP 10.16.175.0/24

Jca: /* Find IP of robot (Linux) */

2021-12-09T15:48:06Z

Find IP of robot (Linux)

← Older revision		Revision as of 17:48, 9 December 2021
Line 164:		Line 164:
	NB! the MAC can hold letters, they should probably be capital.		NB! the MAC can hold letters, they should probably be capital.

	~~Or just~~ the first part, to get a list of active IP on the net:		Use the first part, to get a list of active IP on the net:
	sudo nmap -sP 10.16.175.0/24		sudo nmap -sP 10.16.175.0/24

Jca: /* Find IP of robot (Linux) */

2021-12-09T15:47:35Z

Find IP of robot (Linux)

← Older revision		Revision as of 17:47, 9 December 2021
Line 161:		Line 161:
	sudo nmap -sP 10.16.175.0/24 \| awk '/^Nmap/{ip=$NF}/B8:27:EB:23:A0:F5/{print ip}'		sudo nmap -sP 10.16.175.0/24 \| awk '/^Nmap/{ip=$NF}/B8:27:EB:23:A0:F5/{print ip}'
	where '''10.16.175''' is the first three sections of the IP you noted down and '''B8:27:EB:23:A0:F5''' is the MAC address of the Pi. This should return the IP of the Pi.		where '''10.16.175''' is the first three sections of the IP you noted down and '''B8:27:EB:23:A0:F5''' is the MAC address of the Pi. This should return the IP of the Pi.

	NB! the MAC can hold letters, they should probably be capital.		NB! the MAC can hold letters, they should probably be capital.

	Or just the first part, to get a list of active IP on the net:		Or just the first part, to get a list of active IP on the net:
	sudo nmap -sP 10.16.175.0/24		sudo nmap -sP 10.16.175.0/24

Jca: /* Connecting Raspberry Pi to Eduroam */

2021-12-09T15:47:10Z

Connecting Raspberry Pi to Eduroam

← Older revision		Revision as of 17:47, 9 December 2021
Line 143:		Line 143:
	iwconfig		iwconfig

	The MAC address (HWaddr) of the Pi should also be noted down - this probably starts with '''B8:27:EB:xx:xx:xx''' make sure to get all of it.		The MAC address ('HWaddr' or 'ether') of the Pi should also be noted down - this probably starts with '''B8:27:EB:xx:xx:xx''' make sure to get all of it.

	Remove the LAN-cabel and connect to the Pi using the IP		Remove the LAN-cabel and connect to the Pi using the IP

Jca: /* Find IP of robot (Linux) */

2021-12-09T15:46:21Z

Find IP of robot (Linux)

← Older revision		Revision as of 17:46, 9 December 2021
Line 161:		Line 161:
	sudo nmap -sP 10.16.175.0/24 \| awk '/^Nmap/{ip=$NF}/B8:27:EB:23:A0:F5/{print ip}'		sudo nmap -sP 10.16.175.0/24 \| awk '/^Nmap/{ip=$NF}/B8:27:EB:23:A0:F5/{print ip}'
	where '''10.16.175''' is the first three sections of the IP you noted down and '''B8:27:EB:23:A0:F5''' is the MAC address of the Pi. This should return the IP of the Pi.		where '''10.16.175''' is the first three sections of the IP you noted down and '''B8:27:EB:23:A0:F5''' is the MAC address of the Pi. This should return the IP of the Pi.
			NB! the MAC can hold letters, they should probably be capital.

	Or just the first part, to get a list of active IP on the net:		Or just the first part, to get a list of active IP on the net:
	sudo nmap -sP 10.16.175.0/24		sudo nmap -sP 10.16.175.0/24