Now, My requirement is to calculate the Z-score analysis for the sensors connected via the Arduino. I had connected the following sensors in the respective pins at Arduino.
1.LM35 - A0
2.LDR - A1
3.Moisture sensor. - A2.
So, Generally procedure taught in the lecture was reading the sensor value which is connected in the bolt iot module => A0 pin by using the Bolt Python library and code running in a ubuntu server. The code in the lecture to read the value from bolt A0 pin was below.
import conf, json, time, math, statistics from boltiot import Sms, Bolt def compute_bounds(history_data,frame_size,factor): if len(history_data)<frame_size : return None if len(history_data)>frame_size : del history_data[0:len(history_data)-frame_size] Mn=statistics.mean(history_data) Variance=0 for data in history_data : Variance += math.pow((data-Mn),2) Zn = factor * math.sqrt(Variance / frame_size) High_bound = history_data[frame_size-1]+Zn Low_bound = history_data[frame_size-1]-Zn return [High_bound,Low_bound] mybolt = Bolt(conf.API_KEY, conf.DEVICE_ID) sms = Sms(conf.SSID, conf.AUTH_TOKEN, conf.TO_NUMBER, conf.FROM_NUMBER) history_data= while True: response = mybolt.analogRead('A0') //==> What code to replace to fetch the values from the Arduino for manipulation? data = json.loads(response) if data['success'] != 1: print("There was an error while retriving the data.") print("This is the error:"+data['value']) time.sleep(10) continue print ("This is the value "+data['value']) sensor_value=0 try: sensor_value = int(data['value']) except e: print("There was an error while parsing the response: ",e) continue bound = compute_bounds(history_data,conf.FRAME_SIZE,conf.MUL_FACTOR) if not bound: required_data_count=conf.FRAME_SIZE-len(history_data) print("Not enough data to compute Z-score. Need ",required_data_count," more data points") history_data.append(int(data['value'])) time.sleep(10) continue try: if sensor_value > bound : print ("The light level increased suddenly. Sending an SMS.") response = sms.send_sms("Someone turned on the lights") print("This is the response ",response) elif sensor_value < bound: print ("The light level decreased suddenly. Sending an SMS.") response = sms.send_sms("Someone turned off the lights") print("This is the response ",response) history_data.append(sensor_value); except Exception as e: print ("Error",e) time.sleep(10)
In the above code need to replace the line highlighted that is [mybolt.analogread(‘A0’)].So, what to do now to get the values from the Arduino Analog pins ?and do the z-score analysis.
Help me to sort it out by giving a resolution! @firstname.lastname@example.org
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