Difference between revisions of "Setup camera and such"
From Kandos Digital Embassy
| Line 2: | Line 2: | ||
# eth0 connect inet DHCP | # eth0 connect inet DHCP | ||
| − | # | + | # get pigpio library, install. |
| − | + | # get dht22 example | |
| + | # [http://www.raspberrypi.org/forums/viewtopic.php?p=515575 set up pigpiod at boot] | ||
| + | # make sensor script file and change chmod 755 for executable | ||
| + | <nowiki> | ||
| + | #!/usr/bin/python | ||
| + | #senddata.py | ||
| + | # get basestation | ||
| + | import sys | ||
| + | import time | ||
| + | id = str(sys.argv[1]) | ||
| + | # set up pi and sensors | ||
| + | import os | ||
| + | import urllib | ||
| + | os.chdir('pigpio_dht22') | ||
| + | import pigpio | ||
| + | pi = pigpio.pi() | ||
| + | import DHT22 | ||
| + | s = DHT22.sensor(pi, 4) | ||
| + | # get data | ||
| + | s.trigger() | ||
| + | time.sleep(1) | ||
| + | print('{:3.2f}'.format(s.temperature() / 1.)) | ||
| + | print('{:3.2f}'.format(s.humidity() / 1.)) | ||
| + | # send data, (download results to nowhere) | ||
| + | urllib.urlretrieve("http://digitalembassy.mesh/data/sensors/logData.php?basestation="+id+"&type=temp&value="+('%.2f' % s.temperature()), filename="/dev/null") | ||
| + | time.sleep(1) | ||
| + | urllib.urlretrieve("http://digitalembassy.mesh/data/sensors/logData.php?basestation="+id+"&type=humidity&value="+('%.2f' % s.humidity()), filename="/dev/null") | ||
| + | # close | ||
| + | #s.cancel() | ||
| + | #pi.stop() | ||
| + | #exit() | ||
| + | </nowiki> | ||
| + | # set up crontab -e | ||
| + | <nowiki> | ||
| + | sudo crontab -e | ||
| + | </nowiki> | ||
| + | <nowiki> | ||
| + | * * * * * /home/pi/senddata.py 1 >> /home/pi/cron_out.log | ||
| + | </nowiki> | ||
| + | <nowiki> | ||
| + | sudo service cron restart | ||
| + | </nowiki> | ||
Revision as of 03:23, 1 April 2015
Connect to server
- eth0 connect inet DHCP
- get pigpio library, install.
- get dht22 example
- set up pigpiod at boot
- make sensor script file and change chmod 755 for executable
#!/usr/bin/python
#senddata.py
# get basestation
import sys
import time
id = str(sys.argv[1])
# set up pi and sensors
import os
import urllib
os.chdir('pigpio_dht22')
import pigpio
pi = pigpio.pi()
import DHT22
s = DHT22.sensor(pi, 4)
# get data
s.trigger()
time.sleep(1)
print('{:3.2f}'.format(s.temperature() / 1.))
print('{:3.2f}'.format(s.humidity() / 1.))
# send data, (download results to nowhere)
urllib.urlretrieve("http://digitalembassy.mesh/data/sensors/logData.php?basestation="+id+"&type=temp&value="+('%.2f' % s.temperature()), filename="/dev/null")
time.sleep(1)
urllib.urlretrieve("http://digitalembassy.mesh/data/sensors/logData.php?basestation="+id+"&type=humidity&value="+('%.2f' % s.humidity()), filename="/dev/null")
# close
#s.cancel()
#pi.stop()
#exit()
- set up crontab -e
sudo crontab -e * * * * * /home/pi/senddata.py 1 >> /home/pi/cron_out.log sudo service cron restart
Old approach for hosting data (now using server)
sudo apt-get update sudo apt-get upgrade sudo apt-get install vlc sudo apt-get install hostapd sudo apt-get install dnsmasq
edit the file /etc/network/interfaces and replace the line "iface wlan0 inet ..." with:
iface wlan0 inet static address 192.168.42.1 netmask 255.255.255.0
Edit the file /etc/default/hostapd and change the line:
DAEMON_CONF="/etc/hostapd/hostapd.conf"
edit the file /etc/hostapd/hostapd.conf
interface=wlan0 ssid=TacticalSpaceLab hw_mode=g channel=6 auth_algs=1 wmm_enabled=0
Change IP and start hostapd
sudo ifconfig wlan0 192.168.42.1 sudo service hostapd start
Maybe it doesn't work. Using EDIMAX interface? Try this version of hostapd (via Dave Conroy)
wget http://www.daveconroy.com/wp3/wp-content/uploads/2013/07/hostapd.zip unzip hostapd.zip sudo mv /usr/sbin/hostapd /usr/sbin/hostapd.bak sudo mv hostapd /usr/sbin/hostapd.edimax sudo ln -sf /usr/sbin/hostapd.edimax /usr/sbin/hostapd sudo chown root.root /usr/sbin/hostapd sudo chmod 755 /usr/sbin/hostapd
Set up dnsmasq to give clients DHCP-based IP addresses configure /etc/dnsmasq.conf
interface=wlan0 dhcp-range=192.168.42.50,192.168.42.150,12h
restart dnsmasq
sudo /etc/init.d/dnsmasq restart
Start video share
sudo modprobe bcm2835-v4l2
cvlc v4l2:///dev/video0 --v4l2-width 1920 --v4l2-height 1080 --v4l2-chroma h264 --sout '#standard{access=http,mux=ts,dst=0.0.0.0:12345}'
