Questions tagged [thingspeak]

ThingSpeak is an open source Internet of Things (IoT) application and API to store and retrieve data from things using the HTTP protocol over the Internet or via a Local Area Network. ThingSpeak enables the creation of sensor logging applications, location tracking applications, and a social network of things with status updates.

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Temperature anomaly on BS18B20 + NodeMCU on Tingspeak

Temperature drops occasionally from 59+C to -13C or to other random values. Used sketch and info from this site: http://internetofthinking.blogspot.com/2016/02/upload-ds18b20-temperature-sensor-data....
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Home Security System - Arduino [duplicate]

I wanted to connect 3 sensors for my security system. First, I'll be using PIR sensor in detecting motion for plausible burglars. Second, DHT-22 for monitoring temperature and humidity level. Lastly, ...
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Why am I getting “expected primary-expression before '.' token”?

I know this is a common question but the truth is every code is different. Sometimes it's hard to apply the concept to your code, it does not work. So please help me. What is wrong with this code? I ...
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Data is not sending to Thingspeak using SIM900 with an interrupt in the code

I'm currently working in a weather station with online recording on Thingspeak. When I send a set of parameters (T, Pressure, Humidity, light), I don't have any problem with sending data. But when I ...
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esp8266 using thingspeak for iot light on project via google assistant fatal error everytime

fatal error timeout and unable to connect to thingspeak for fetching data sent via google assistant (ifttt) #include <LiquidCrystal.h> #include <SoftwareSerial.h> //ESP is connected to ...
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1answer
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Serial monitor shows repeated CIPSEND and CIPCLOSE

I'm trying to build a heart rate monitor using ESP-01. The code compiles and uploads well but once uploaded, in the serial monitor it shows the following. It keeps repeat CIPSEND and CIPCLOSE over and ...
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HTTP request is not being executed in Arduino script for sending sensor data to Thingspeak cloud

I am trying to send the data from DHT sensor (temperature and humidity on 2 channels of Thingspeak cloud server) and firstly display them on Thingspeak cloud. Afterwards I will need to get those data ...
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Can't push data to ThingSpeak - Status 400 Bad Request

I'm trying to push some data to ThingSpeak using the EtherCard library with the ENC28J60 ethernet module. At the moment I'm using the exemple code that comes with the library just for tests. But no ...
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ThingSpeak writing multi fields returns HTTP error code with -301 or -302

I am using arduino and ethernet shield with ThingSpeak library to write multi fields. this sample code from docs. it is working good with 4 fields but if I want to write 8 fields in a same time such ...
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396 views

Can't extract basic data using ThingspeakHTTP

I don't know anything about HTML, but I want to extract the % probability of the Northern lights being visible from this webpage http://aurorawatch.ca/. I entered this into the URL field, and selected ...
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Unable to parse my JSON Data in Arduino IDE

i want to get my thingSpeak channel data into arduino by performing GET request every things works fine.Further i used Arduinojson lib to parse the JSON but i am getting failed every time when i try ...
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Reading data from ThingSpeak via Arduino Uno+ESP8266

I am integrating thingspeak and arduino plus Esp8266 mean making a simple project which contain my android app to update the thingspeak channel and then want to read the data of that channel via ...
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Unable to upload the data on thingspeak using uno and esp8266

I am able to connect to thingspeak but now able to upload the data. here are my set of commands: AT+CIPMUX=0 OK AT+CIPSTART="TCP","184.106.153.149", 80 OK Linked AT+CIPSTATUS STATUS:3 +CIPSTATUS:...