= temperature measurement on a raspberry == intro DS18B20 image:./pic/ds18b20_t09.jpg[] image:./pic/ds18b20_waterproof.jpg[] image:./pic/ds18b20_schema2.png[] image:./pic/ds18b20_gpio.png[] == client source /bin/cid-functions cid_add_line /boot/config.txt "dtoverlay=w1-gpio" wget -N -nv http://d01cid.ddns.net/sharel/bin/cid-ds18b20 -P /bin/ chmod +x /bin/cid-ds18b20 cube /etc/cron.d/cid-cron "#*/1" with "*/1" cid_add_line /bin/cid-cron01 "/bin/cid-ds18b20 srv002.d01.net" TIP: for your reference, you can get the script link:http://d01cid.ddns.net/sharel/bin/cid-ds18b20[here] === testing After enabling the extra line in /boot/config.txt, reboot the node. ll /sys/devices/w1_bus_master1/ ---- drwxr-xr-x 3 root root 0 Jan 1 1970 28-000008eaf56c lrwxrwxrwx 1 root root 0 Jan 1 1970 driver -> ../../bus/w1/drivers/w1_master_driver drwxr-xr-x 2 root root 0 Sep 5 22:36 power lrwxrwxrwx 1 root root 0 Jan 1 1970 subsystem -> ../../bus/w1 -rw-r--r-- 1 root root 4096 Jan 1 1970 uevent -rw-rw-r-- 1 root root 4096 Sep 5 22:36 w1_master_add -r--r--r-- 1 root root 4096 Sep 5 22:36 w1_master_attempts -rw-rw-r-- 1 root root 4096 Sep 5 22:36 w1_master_max_slave_count -r--r--r-- 1 root root 4096 Sep 5 22:36 w1_master_name -r--r--r-- 1 root root 4096 Sep 5 22:36 w1_master_pointer -rw-rw-r-- 1 root root 4096 Sep 5 22:36 w1_master_pullup -rw-rw-r-- 1 root root 4096 Sep 5 22:36 w1_master_remove -rw-rw-r-- 1 root root 4096 Sep 5 22:36 w1_master_search -r--r--r-- 1 root root 4096 Sep 5 22:36 w1_master_slave_count -r--r--r-- 1 root root 4096 Sep 5 22:36 w1_master_slaves -r--r--r-- 1 root root 4096 Sep 5 22:36 w1_master_timeout -r--r--r-- 1 root root 4096 Sep 5 22:36 w1_master_timeout_us ---- cat /sys/devices/w1_bus_master1/w1_master_slaves ---- 28-000008eaf56c ---- cat /sys/bus/w1/devices/28-000008eaf56c/w1_slave ---- 91 01 4b 46 7f ff 0f 10 25 : crc=25 YES 91 01 4b 46 7f ff 0f 10 25 t=25062 ---- == server mysql -u"root" -p"Passw0rd" -e "drop database temperature;" mysql -u"root" -p"Passw0rd" -e "create database temperature;" mysql -u"root" -p"Passw0rd" temperature -e "create table temps (t1 FLOAT, t2 FLOAT, t3 FLOAT, t4 FLOAT, receivedat TIMESTAMP DEFAULT CURRENT_TIMESTAMP);" # mysql -u"root" -p"Passw0rd" temperature -e "insert into temps (t1, t2, t3, t4) values (10, 12, 14, 16);" === rtemp yum -y install rrdtool curl -# http://d01cid.ddns.net/sharel/tar/rtemp-20180212.tgz | tar xzP -C /opt/ /opt/rtemp/bin/rtemp-init wget -N -nv http://d01cid.ddns.net/sharel/etc/httpd/conf.d/rtemp.conf -P /etc/httpd/conf.d/ cube /etc/httpd/conf.d/rtemp.conf "%dnsdomainname%" with "$(dnsdomainname)" systemctl reload httpd.service source /bin/cid-functions cube /etc/cron.d/cid-cron "#*/1" with "*/1" cid_add_line /bin/cid-cron01 "/opt/rtemp/bin/rtemp" http://srv002.d01.net/rtemp/ === tempmon (deprecated) wget -N -nv http://iada.nl/system/files/tempmon_2_0.zip -P /tmp/ mkdir -p /var/www/html/tempmon unzip /tmp/tempmon_2_0.zip -d /var/www/html/tempmon/ rm -f /tmp/tempmon_2_0.zip yum -y install dos2unix dos2unix /var/www/html/tempmon/index.php cube /var/www/html/tempmon/index.php "HOST" with "localhost" cube /var/www/html/tempmon/index.php "USER" with "root" cube /var/www/html/tempmon/index.php "PASSWORD" with "Passw0rd" cube /var/www/html/tempmon/index.php "DATABASE" with "temperature" cube /var/www/html/tempmon/index.php "temp1" with "t1" cube /var/www/html/tempmon/index.php "temp2" with "t2" cube /var/www/html/tempmon/index.php "created_at" with "receivedat" cube /var/www/html/tempmon/index.php "Sensor Binnen" with "Sensor T1" cube /var/www/html/tempmon/index.php "Sensor Buiten" with "Sensor T2" cube /var/www/html/tempmon/index.php "Gem laatste 24u" with "Average" cube /var/www/html/tempmon/index.php "Refresh: 150" with "Refresh: 60" cube /var/www/html/tempmon/index.php "height:400px" with "height:250px" == debugging mysql -u"root" -p"Passw0rd" temperature -e "select * from temps;" == references http://iada.nl/blog/artikel/temperatuurmonitoring-met-de-raspberry-pi http://www.tundra-it.com/en/raspberry-pi-termometro-y-control-web-de-la-casa/ https://www.mkompf.com/weather/pionewiremini.html http://thepiandi.blogspot.be/2013/06/a-raspberry-pi-thermometer-interpreting.html