130 lines
No EOL
4.4 KiB
Python
130 lines
No EOL
4.4 KiB
Python
#!/usr/bin/env python
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#
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# GrovePi Project for a Plant monitoring project.
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# * Reads the data from moisture, light, temperature and humidity sensor
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# and takes pictures from the Pi camera periodically and logs them
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# * Sensor Connections on the GrovePi:
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# -> Grove Moisture sensor - Port A1
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# -> Grove light sensor - Port A2
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# -> Grove DHT sensors - Port D4
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#
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# NOTE:
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# * Make sure that the Pi camera is enabled and works. Directions here: https://www.raspberrypi.org/help/camera-module-setup/
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#
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# The GrovePi connects the Raspberry Pi and Grove sensors. You can learn more about GrovePi here: http://www.dexterindustries.com/GrovePi
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#
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# Have a question about this example? Ask on the forums here: http://forum.dexterindustries.com/c/grovepi
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#
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'''
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## License
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The MIT License (MIT)
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GrovePi for the Raspberry Pi: an open source platform for connecting Grove Sensors to the Raspberry Pi.
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Copyright (C) 2017 Dexter Industries
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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'''
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import time
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import grovepi
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import subprocess
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import math
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#analog sensor port number
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mositure_sensor = 1
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light_sensor = 2
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#digital sensor
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temp_himidity_sensor = 4
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#temp_himidity_sensor type
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# grove starter kit comes with the bluew sensor
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blue=0
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white=1
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#############
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#test timings
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time_for_sensor = 4 # 4 seconds
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time_for_picture = 12 # 12 seconds
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# final
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# time_for_sensor = 1*60*60 #1hr
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# time_for_picture = 8*60*60 #8hr
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time_to_sleep = 1
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log_file="plant_monitor_log.csv"
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#Read the data from the sensors
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def read_sensor():
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try:
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moisture=grovepi.analogRead(mositure_sensor)
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light=grovepi.analogRead(light_sensor)
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[temp,humidity] = grovepi.dht(temp_himidity_sensor,white)
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#Return -1 in case of bad temp/humidity sensor reading
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if math.isnan(temp) or math.isnan(humidity): #temp/humidity sensor sometimes gives nan
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return [-1,-1,-1,-1]
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return [moisture,light,temp,humidity]
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#Return -1 in case of sensor error
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except IOError as TypeError:
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return [-1,-1,-1,-1]
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#Take a picture with the current time using the Raspberry Pi camera. Save it in the same folder
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def take_picture():
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try:
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cmd="raspistill -t 1 -o plant_monitor_"+str(time.strftime("%Y_%m_%d__%H_%M_%S"))+".jpg"
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process = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE)
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output = process.communicate()[0]
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print("Picture taken\n------------>\n")
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except:
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print("Camera problem,please check the camera connections and settings")
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#Save the initial time, we will use this to find out when it is time to take a picture or save a reading
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last_read_sensor=last_pic_time= int(time.time())
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while True:
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curr_time_sec=int(time.time())
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# If it is time to take the sensor reading
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if curr_time_sec-last_read_sensor>time_for_sensor:
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[moisture,light,temp,humidity]=read_sensor()
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# If any reading is a bad reading, skip the loop and try again
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if moisture==-1:
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print("Bad reading")
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time.sleep(1)
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continue
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curr_time = time.strftime("%Y-%m-%d:%H-%M-%S")
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print(("Time:%s\nMoisture: %d\nLight: %d\nTemp: %.2f\nHumidity:%.2f %%\n" %(curr_time,moisture,light,temp,humidity)))
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# Save the sensor reading to the CSV file
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f=open(log_file,'a')
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f.write("%s,%d,%d,%.2f,%.2f;\n" %(curr_time,moisture,light,temp,humidity))
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f.close()
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#Update the last read time
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last_read_sensor=curr_time_sec
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# If it is time to take the picture
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if curr_time_sec-last_pic_time>time_for_picture:
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take_picture()
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last_pic_time=curr_time_sec
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#Slow down the loop
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time.sleep(time_to_sleep) |