BeagleBone Green Temperature Monitor on Artik Cloud

It's a simple project for send data from BBG to Artik Cloud, in my opinion Artik Cloud is very promising, but their website is very unstable (and slow), and I had some problems and errors (as you will see at the end of the project).

Reading temperature VIA I2C ADC

import time 
import math 
import grove_i2c_adc 
import Adafruit_BBIO.GPIO as GPIO 
BUZZER = "P9_22"            # GPIO P9_22 
GPIO.setup(BUZZER, GPIO.OUT) 
# The threshold to turn the buzzer on 28 Celsius 
THRESHOLD_TEMPERATURE = 28 
adc = grove_i2c_adc.I2cAdc() 
#   The argument in the read_temperature() method defines which Grove board(Grove Temperature Sensor) version you have connected. 
#   Defaults to 'v1.2'. eg. 
#       temp = read_temperature('v1.0')          # B value = 3975 
#       temp = read_temperature('v1.1')          # B value = 4250 
#       temp = read_temperature('v1.2')          # B value = 4250 
def read_temperature(model = 'v1.2'): 
   "Read temperature values in Celsius from Grove Temperature Sensor" 
   # each of the sensor revisions use different thermistors, each with their own B value constant 
   if model == 'v1.2': 
       bValue = 4250  # sensor v1.2 uses thermistor ??? (assuming NCP18WF104F03RC until SeeedStudio clarifies) 
   elif model == 'v1.1': 
       bValue = 4250  # sensor v1.1 uses thermistor NCP18WF104F03RC 
   else: 
       bValue = 3975  # sensor v1.0 uses thermistor TTC3A103*39H 
   total_value = 0 
   for index in range(20): 
       sensor_value = adc.read_adc() 
       total_value += sensor_value 
       time.sleep(0.05) 
   average_value = float(total_value / 20) 
   # Transform the ADC data into the data of Arduino platform. 
   sensor_value_tmp = (float)(average_value / 4095 * 2.95 * 2 / 3.3 * 1023) 
   resistance = (float)(1023 - sensor_value_tmp) * 10000 / sensor_value_tmp 
   temperature = round((float)(1 / (math.log(resistance / 10000) / bValue + 1 / 298.15) - 273.15), 2) 
   return temperature 
# Function: If the temperature sensor senses the temperature that is up to the threshold you set in the code, the buzzer is ringing for 1s. 
# Hardware: Grove - I2C ADC, Grove - Temperature Sensor, Grove - Buzzer 
# Note: Use P9_22(UART2_RXD) as GPIO. 
# Connect the Grove Buzzer to UART Grove port of Beaglebone Green. 
# Connect the Grove - I2C ADC to I2C Grove port of Beaglebone Green, and then connect the Grove - Temperature Sensor to Grove - I2C ADC. 
if __name__ == '__main__': 
   while True: 
       try: 
           # Read temperature values in Celsius from Grove Temperature Sensor 
           temperature = read_temperature('v1.2') 
           # When the temperature reached predetermined value, buzzer is ringing. 
           print "temperature = ", temperature 
       except IOError: 
           print "Error" 

Create a new device (on Artik Cloud)

Test Publishing Data

import requests 
import json 
import time 
ts = int(time.time()) 
headers = {'Content-Type': 'application/json','Authorization':'Bearer 5ab083f9631e48729423bc0a6978eaa5'} 
url = 'https://api.artik.cloud/v1.1/messages' 
data = { 
 'sdid': '385261a597fd4e808562fde4a87dee3f', 
 'type': 'message', 
 'ts': '1475160627', 
 'data': {'TEMPERATURE':36} 
} 
params = {} 
response = requests.post(url, params=params, data=json.dumps(data), headers=headers) 
print "enviado" 
print response.status_code 
print response.text 

Publish temperature in real time

import time 
import math 
import grove_i2c_adc 
import Adafruit_BBIO.GPIO as GPIO 
BUZZER = "P9_22"            # GPIO P9_22 
GPIO.setup(BUZZER, GPIO.OUT) 
THRESHOLD_TEMPERATURE = 28 
adc = grove_i2c_adc.I2cAdc() 
def read_temperature(model = 'v1.2'): 
   "Read temperature values in Celsius from Grove Temperature Sensor" 
   # each of the sensor revisions use different thermistors, each with their own B value constant 
   if model == 'v1.2': 
       bValue = 4250  # sensor v1.2 uses thermistor ??? (assuming NCP18WF104F03RC until SeeedStudio clarifies) 
   elif model == 'v1.1': 
       bValue = 4250  # sensor v1.1 uses thermistor NCP18WF104F03RC 
   else: 
       bValue = 3975  # sensor v1.0 uses thermistor TTC3A103*39H 
   total_value = 0 
   for index in range(20): 
       sensor_value = adc.read_adc() 
       total_value += sensor_value 
       time.sleep(0.05) 
   average_value = float(total_value / 20) 
   # Transform the ADC data into the data of Arduino platform. 
   sensor_value_tmp = (float)(average_value / 4095 * 2.95 * 2 / 3.3 * 1023) 
   resistance = (float)(1023 - sensor_value_tmp) * 10000 / sensor_value_tmp 
   temperature = round((float)(1 / (math.log(resistance / 10000) / bValue + 1 / 298.15) - 273.15), 2) 
   return temperature 
if __name__ == '__main__': 
   while True: 
       try: 
           # Read temperature values in Celsius from Grove Temperature Sensor 
           temperature = read_temperature('v1.2') 
           # When the temperature reached predetermined value, buzzer is ringing. 
           print "temperature = ", temperature 
           import requests 
           import json 
           import time 
           ts = int(time.time()) 
           print "time = ",ts 
           headers = {'Content-Type': 'application/json','Authorization':'Bearer 0122adc59504416aabd19af802912339'} 
           url = 'https://api.artik.cloud/v1.1/messages' 
           data = { 
             'sdid': '385261a597fd4e808562fde4a87dee3f', 
             'type': 'message', 
             'ts': ts, 
             'data': {'TEMPERATURE':temperature} 
           } 
           params = {} 
           response = requests.post(url, params=params, data=json.dumps(data), headers=headers) 
           print "enviado" 
           print response.status_code 
           time.sleep(1) 
       except IOError: 
           print "Error" 

See Data Log

Publishing from BBG

Messages Log

For How use Postman, see my previous Project:

https://www.hackster.io/LaurenceHR/consuming-artik-cloud-api-from-postman-chrome-extension-8f6dfb?ref=user&ref_id=43908&offset=1

On Artik Cloud

For an inexplicable reason, Artik doesn't show my data sent in the charts :/