DIY Environment Monitoring

travisdh1

Got a script to run that will log the daily average temperature for me. I think it's longer than it needs to be, but it works and I actually didn't have much trouble getting it to work once I dropped it into zsh. (zsh natively supports double float that bash does not.)

#!/bin/zsh
# Calculate previous days average temperature
# Get yesterday's date
yesterday=$(date -d "-1 days" +%D)
# Dump only yesterday's data into a file
eval 'cat /var/log/temp/temp.log | grep ${yesterday} > /home/tech/bin/yesterdaylog'
# Get a count of the number of records in yesterday's records
# In case of a power outage it will be different
num_records=$(eval "wc -l /home/tech/bin/yesterdaylog|cut -d' ' -f1")
# Get the values in Farenheight from yesterday's file
degF=( $(cut -d ',' -f3 /home/tech/bin/yesterdaylog) )
# Get a sum of the degF array to use in average
tot=$((${(j[+])degF[*]}))
# Devide tot by num_records to produce an average
daily_average=$((tot/num_records))
daily_average2=$(eval "echo '$daily_average' | cut -c1-5")
# Drop the output into another log file
date +%D", "$daily_average2 >> /var/log/temp/dailytemp.log
# Troubleshooting section.  Print variables for confirmation.
#echo "${yesterday}"
#echo $num_records
#echo $degF[1]
#echo $tot
#echo $daily_average2

And the root crontab now contains

*/10 * * * * /home/tech/bin/tmphmdtime.out >> /var/log/temp/temp.log
2 2 * * * /home/tech/bin/tmpavgcalc.sh

travisdh1

Just to cover all my bases, I also created a logrotate configuration file for my two new log files.

/var/log/temp/temp.log
{
monthly
rotate 24
errors tech
prerotate
compress
}

/var/log/temp/dailytemp.log
{
monthly
rotate 56
errors tech
prerotate
compress
}

travisdh1

I suppose this could all be rolled up into a nice debian package, but for now I'm just going to image the sd card and call it a day.

Added /home/user/bin to the user's path in .bashrc. To get the current time/tempC/tempF/humidity I just run tmphmdtime.out (copied a.out to that in the user bin directory).

travisdh1

Temp monitoring is working great. My daily log

tech@tempdoor-rpi ~ $ tail /var/log/temp/dailytemp.log
07/11/16, 77.70
07/12/16, 72.56
07/13/16, 73.67
07/14/16, 73.14
07/15/16, 73.13
07/16/16, 72.83
07/17/16, 71.27
07/18/16, 71.45

When I went in the room last week to adjust the air conditioner and the door sensor pieces were glued together instead of the door and door frame. Need to get that glued on properly and then get it logging that as well. We have a security camera in the room as well, would be nice to grab a picture from it each time someone opens the door.

thwr

@travisdh1 said in DIY Environment Monitoring:

Temp monitoring is working great. My daily log
tech@tempdoor-rpi ~ $ tail /var/log/temp/dailytemp.log
07/11/16, 77.70
07/12/16, 72.56
07/13/16, 73.67
07/14/16, 73.14
07/15/16, 73.13
07/16/16, 72.83
07/17/16, 71.27
07/18/16, 71.45
When I went in the room last week to adjust the air conditioner and the door sensor pieces were glued together instead of the door and door frame. Need to get that glued on properly and then get it logging that as well. We have a security camera in the room as well, would be nice to grab a picture from it each time someone opens the door.

Easy, write a script that is monitoring an input pin. You could use a Reed switch for example. Basically a magnetic switch.

travisdh1

@thwr said in DIY Environment Monitoring:

@travisdh1 said in DIY Environment Monitoring:
Temp monitoring is working great. My daily log
tech@tempdoor-rpi ~ $ tail /var/log/temp/dailytemp.log
07/11/16, 77.70
07/12/16, 72.56
07/13/16, 73.67
07/14/16, 73.14
07/15/16, 73.13
07/16/16, 72.83
07/17/16, 71.27
07/18/16, 71.45
When I went in the room last week to adjust the air conditioner and the door sensor pieces were glued together instead of the door and door frame. Need to get that glued on properly and then get it logging that as well. We have a security camera in the room as well, would be nice to grab a picture from it each time someone opens the door.
Easy, write a script that is monitoring an input pin. You could use a Reed switch for example. Basically a magnetic switch.

Oh, the door monitor script is working great via a very small python script. Just need to get the little sucker mounted properly.

tech@tempdoor-rpi ~/bin $ cat door.py
import datetime
import time
import RPi.GPIO as io
io.setmode(io.BCM)
door_pin = 6
io.setup(door_pin, io.IN, pull_up_down=io.PUD_UP) #Activate door sensor using the pull up resistor
while True:
    if io.input(door_pin):
            print ('DOOR ALARM!'), datetime.datetime.now().strftime("%H:%M %Y-%m-%d")
    time.sleep(0.5)

thwr

@travisdh1 said in DIY Environment Monitoring:

@thwr said in DIY Environment Monitoring:
@travisdh1 said in DIY Environment Monitoring:
Temp monitoring is working great. My daily log
tech@tempdoor-rpi ~ $ tail /var/log/temp/dailytemp.log
07/11/16, 77.70
07/12/16, 72.56
07/13/16, 73.67
07/14/16, 73.14
07/15/16, 73.13
07/16/16, 72.83
07/17/16, 71.27
07/18/16, 71.45
When I went in the room last week to adjust the air conditioner and the door sensor pieces were glued together instead of the door and door frame. Need to get that glued on properly and then get it logging that as well. We have a security camera in the room as well, would be nice to grab a picture from it each time someone opens the door.
Easy, write a script that is monitoring an input pin. You could use a Reed switch for example. Basically a magnetic switch.
Oh, the door monitor script is working great via a very small python script. Just need to get the little sucker mounted properly.
tech@tempdoor-rpi ~/bin $ cat door.py
import datetime
import time
import RPi.GPIO as io
io.setmode(io.BCM)
door_pin = 6
io.setup(door_pin, io.IN, pull_up_down=io.PUD_UP) #Activate door sensor using the pull up resistor
while True:
    if io.input(door_pin):
            print ('DOOR ALARM!'), datetime.datetime.now().strftime("%H:%M %Y-%m-%d")
    time.sleep(0.5)

So your problem is getting an image? USB or IP cam?

travisdh1

@thwr said in DIY Environment Monitoring:

@travisdh1 said in DIY Environment Monitoring:
@thwr said in DIY Environment Monitoring:
@travisdh1 said in DIY Environment Monitoring:
Temp monitoring is working great. My daily log
tech@tempdoor-rpi ~ $ tail /var/log/temp/dailytemp.log
07/11/16, 77.70
07/12/16, 72.56
07/13/16, 73.67
07/14/16, 73.14
07/15/16, 73.13
07/16/16, 72.83
07/17/16, 71.27
07/18/16, 71.45
When I went in the room last week to adjust the air conditioner and the door sensor pieces were glued together instead of the door and door frame. Need to get that glued on properly and then get it logging that as well. We have a security camera in the room as well, would be nice to grab a picture from it each time someone opens the door.
Easy, write a script that is monitoring an input pin. You could use a Reed switch for example. Basically a magnetic switch.
Oh, the door monitor script is working great via a very small python script. Just need to get the little sucker mounted properly.
tech@tempdoor-rpi ~/bin $ cat door.py
import datetime
import time
import RPi.GPIO as io
io.setmode(io.BCM)
door_pin = 6
io.setup(door_pin, io.IN, pull_up_down=io.PUD_UP) #Activate door sensor using the pull up resistor
while True:
    if io.input(door_pin):
            print ('DOOR ALARM!'), datetime.datetime.now().strftime("%H:%M %Y-%m-%d")
    time.sleep(0.5)
So your problem is getting an image? USB or IP cam?

IP cam, cheap TrendNet TV-IP672PI. Haven't looked at the camera side yet to see how difficult that will be.

thwr

Ah ok. There are basically 3 ways. Some cams do have kind of an API, like a REST interface. Others can upload pictures via FTP when they detect something with motion detection, so you could grab that image from there.

But next to all cams can provide a video stream. You could grab that using VLC or some other streaming client. Grab a photo or maybe even an video

travisdh1

@travisdh1 said in DIY Environment Monitoring:

@thwr said in DIY Environment Monitoring:
@travisdh1 said in DIY Environment Monitoring:
@thwr said in DIY Environment Monitoring:
@travisdh1 said in DIY Environment Monitoring:
Temp monitoring is working great. My daily log
tech@tempdoor-rpi ~ $ tail /var/log/temp/dailytemp.log
07/11/16, 77.70
07/12/16, 72.56
07/13/16, 73.67
07/14/16, 73.14
07/15/16, 73.13
07/16/16, 72.83
07/17/16, 71.27
07/18/16, 71.45
When I went in the room last week to adjust the air conditioner and the door sensor pieces were glued together instead of the door and door frame. Need to get that glued on properly and then get it logging that as well. We have a security camera in the room as well, would be nice to grab a picture from it each time someone opens the door.
Easy, write a script that is monitoring an input pin. You could use a Reed switch for example. Basically a magnetic switch.
Oh, the door monitor script is working great via a very small python script. Just need to get the little sucker mounted properly.
tech@tempdoor-rpi ~/bin $ cat door.py
import datetime
import time
import RPi.GPIO as io
io.setmode(io.BCM)
door_pin = 6
io.setup(door_pin, io.IN, pull_up_down=io.PUD_UP) #Activate door sensor using the pull up resistor
while True:
    if io.input(door_pin):
            print ('DOOR ALARM!'), datetime.datetime.now().strftime("%H:%M %Y-%m-%d")
    time.sleep(0.5)
So your problem is getting an image? USB or IP cam?
IP cam, cheap TrendNet TV-IP672PI. Haven't looked at the camera side yet to see how difficult that will be.

Hoping I can just grab a picture with wget or curl.

travisdh1

@travisdh1 said in DIY Environment Monitoring:

@travisdh1 said in DIY Environment Monitoring:
@thwr said in DIY Environment Monitoring:
@travisdh1 said in DIY Environment Monitoring:
@thwr said in DIY Environment Monitoring:
@travisdh1 said in DIY Environment Monitoring:
Temp monitoring is working great. My daily log
tech@tempdoor-rpi ~ $ tail /var/log/temp/dailytemp.log
07/11/16, 77.70
07/12/16, 72.56
07/13/16, 73.67
07/14/16, 73.14
07/15/16, 73.13
07/16/16, 72.83
07/17/16, 71.27
07/18/16, 71.45
When I went in the room last week to adjust the air conditioner and the door sensor pieces were glued together instead of the door and door frame. Need to get that glued on properly and then get it logging that as well. We have a security camera in the room as well, would be nice to grab a picture from it each time someone opens the door.
Easy, write a script that is monitoring an input pin. You could use a Reed switch for example. Basically a magnetic switch.
Oh, the door monitor script is working great via a very small python script. Just need to get the little sucker mounted properly.
tech@tempdoor-rpi ~/bin $ cat door.py
import datetime
import time
import RPi.GPIO as io
io.setmode(io.BCM)
door_pin = 6
io.setup(door_pin, io.IN, pull_up_down=io.PUD_UP) #Activate door sensor using the pull up resistor
while True:
    if io.input(door_pin):
            print ('DOOR ALARM!'), datetime.datetime.now().strftime("%H:%M %Y-%m-%d")
    time.sleep(0.5)
So your problem is getting an image? USB or IP cam?
IP cam, cheap TrendNet TV-IP672PI. Haven't looked at the camera side yet to see how difficult that will be.
Hoping I can just grab a picture with wget or curl.

Looks like it does support RTSP, so I should be able to work with that

travisdh1

cvlc rtsp://192.168.0.13:554/play1.sdp --rtsp-user=someluser --rtsp-pwd=somepassword --sout=file/ps:/mnt/gluststor/secvid/test.mpg -Vdummy

Grabs the video camera feed and records it without any X11 installed Now all I have to do is figure out how I want to work the file storage and it's good to go.

hobbit666

Could this be monitored by Zabbix??

Might do one myself if it can

scottalanmiller

@hobbit666 said in DIY Environment Monitoring:

Could this be monitored by Zabbix??

Might do one myself if it can

If you have sensors, yes.

travisdh1

@hobbit666 said in DIY Environment Monitoring:

Could this be monitored by Zabbix??

Might do one myself if it can

Yes. For Zabbix you'd just install the client.

I'm having the sensors drop their information into /var/log with the idea that it would be very easy to integrate with log shipping or Splunk/splunk like programs.

hobbit666

Thinking maybe having 2-3 sensors for different parts of the room then feed them into zabbix and alert if 1 goes over x. hmmmm see if I can get some cheap now and the sensors and some cables.

gjacobse

@hobbit666 said in DIY Environment Monitoring:

Thinking maybe having 2-3 sensors for different parts of the room then feed them into zabbix and alert if 1 goes over x. hmmmm see if I can get some cheap now and the sensors and some cables.

you should be able to do that with no issues... have a look at the ESP8266 chip as an option for that.

travisdh1

@hobbit666 said in DIY Environment Monitoring:

Thinking maybe having 2-3 sensors for different parts of the room then feed them into zabbix and alert if 1 goes over x. hmmmm see if I can get some cheap now and the sensors and some cables.

Water sensors are the simplest sensors you can possibly make, literally just two wires. It's crazy to see what companies charge for those. $50 for a piece of plastic that holds two wires, the only requirement is that the two wires never touch. So those are really super cheap and easy to add onto a Pi/Arduino.

If you want a network connection for each of them, then a Pi is going to be easier to deal with than adding that to an Arduino.

I just took a quick look, and zabbix-agent is included in the Raspbian repo.

travisdh1

@gjacobse said in DIY Environment Monitoring:

@hobbit666 said in DIY Environment Monitoring:

Thinking maybe having 2-3 sensors for different parts of the room then feed them into zabbix and alert if 1 goes over x. hmmmm see if I can get some cheap now and the sensors and some cables.

you should be able to do that with no issues... have a look at the ESP8266 chip as an option for that.

You made me look, Adafruit is at it again. HUZZAH ESP8266 Wifi, enough pins to make a useful control module, and can use the Arduino IDE to program the thing. So much win with that one.

gjacobse

@travisdh1 said in DIY Environment Monitoring:

@gjacobse said in DIY Environment Monitoring:

@hobbit666 said in DIY Environment Monitoring:

Thinking maybe having 2-3 sensors for different parts of the room then feed them into zabbix and alert if 1 goes over x. hmmmm see if I can get some cheap now and the sensors and some cables.

you should be able to do that with no issues... have a look at the ESP8266 chip as an option for that.

You made me look, Adafruit is at it again. HUZZAH ESP8266 Wifi, enough pins to make a useful control module, and can use the Arduino IDE to program the thing. So much win with that one.

They are something I have been looking at, but have no idea how to use.. I have no issue with concocting things,.. but seemingly no ability to program it.... I want to so some work with them,.. and replace the (self moderated) job of an alarm system and have a hybrid system.