Contents
Introduction
In this project, we will learn how we can send data to things speak server with http post using SIM7600 and Arduino.
In our previous projects, We used SIM800 / SIM900 series of 2G GSM module to send HTTP requests but 2G services is band in most of the European Countries. So, there might be problem in remote monitoring or sending data to server using wireless communications. We can solve this problem by using 4G LTE module SIM7600 and Arduino.
This 4G GSM LTE Module allows you to add voice, text, location-tracking, voice, SMS, and data to your application.One of the big advantage of Sim7600 4G LTE module is its covers a wide range of area and signal/connectivity is available almost everywhere.
In this project,We use Cellular IOT with 4G LTE SIM7600 Modem and Send Data to Server with HTTP Post using SIM7600 LTE module
Components Details
This Module is manufactured by makerfabs
| SN | COMPONENTS NAME | DESCRIPTION | QUANTITY |  |
|---|---|---|---|---|
| 1 | SIM7600 Board | Maduino Zero 4G LTE(SIM7600X) | 1 | Makerfabs Link |
| 2 | DHT 11 Sensor | Temperature and humidity sensor | 1 | https://amzn.to/3aCkFrV |
| 3 | Jumper Wires | Connecting Wires | some | https://amzn.to/3H2v4cs |
PCB Manufacturer
This project is sponsored by PCBWAY. It is world fastest pcb manufacturing company.
You Will get FREE prototype pcb from PCBWAY. So do not be late to register and place your first order from PCBWAY
If you want to order pcb from PCBWAY . CLICK IN THE LINK BELOW:
Hardware Overview of SIM7600 LTE Module
I have describe the hardware of SIM7600 LTE module in my previous article. If you want to go through it i have provided the link below:
HTTP Post With SIM7600 and Arduino
We are going to send DHT11 temperature and humidity data to things speak server using SIM7600 and Arduino. We will use HTTP Post method and with SIM7600 AT Commands. In our previous article also we have already tested AT commands for checking HTTP data.
Hardware Connections Of SIM7600 and Arduino With DHT11 sensor
DHT11 temperature and humidity sensor has 3 pins VCC ,GND and Data .
vcc is connected to 3.3 volt.
GND to Ground
Data to D3 pin of the module
Arduino IDE setup
At the beginning we need to install “Arduino Zero Board” from the Board Manager. Ahe ATSAMD21G18A board isn’t pre-installed in the Arduino IDEs.
Once installation is done you will see the interface as shown in above diagram for uploading the code.
Source code
#include <stdio.h>
#include <string.h>
#include <DHT.h>
//Change the API key to yours
String Apikey = "***************";
#define DEBUG true
#define LTE_RESET_PIN 6
#define LTE_PWRKEY_PIN 5
#define LTE_FLIGHT_PIN 7
#define Sensor_PIN 3 //D3-DHT11
DHT dht(Sensor_PIN,DHT11);
void setup()
{
SerialUSB.begin(115200);
//while (!SerialUSB)
{
; // wait for Arduino serial Monitor port to connect
}
Serial1.begin(115200);
//Serial1.begin(UART_BAUD, SERIAL_8N1, MODEM_RXD, MODEM_TXD);
pinMode(LTE_RESET_PIN, OUTPUT);
digitalWrite(LTE_RESET_PIN, LOW);
pinMode(LTE_PWRKEY_PIN, OUTPUT);
digitalWrite(LTE_RESET_PIN, LOW);
delay(100);
digitalWrite(LTE_PWRKEY_PIN, HIGH);
delay(2000);
digitalWrite(LTE_PWRKEY_PIN, LOW);
pinMode(LTE_FLIGHT_PIN, OUTPUT);
digitalWrite(LTE_FLIGHT_PIN, LOW);//Normal Mode
delay(5000);
/*ModuleState = moduleStateCheck();
if (ModuleState == false) //if it's off, turn on it.
{
digitalWrite(PWR_KEY, LOW);
delay(3000);
digitalWrite(PWR_KEY, HIGH);
delay(10000);
SerialUSB.println("Now turnning the SIM7600 on.");
}*/
sendData("AT+CCID", 3000, DEBUG);
sendData("AT+CREG?", 3000, DEBUG);
sendData("AT+CGATT=1", 1000, DEBUG);
sendData("AT+CGACT=1,1", 1000, DEBUG);
sendData("AT+CGDCONT=1,\"IP\",\"apn\"", 1000, DEBUG);
//sendData("AT+CIPSTART=\"TCP\",\"www.mirocast.com\",80", 2000, DEBUG);
SerialUSB.println("4G HTTP Test Begin!");
dht.begin();
delay(1000);
}
void loop()
{
//--------Get temperature and humidity-------------
float h = dht.readHumidity();
float t = dht.readTemperature();
SerialUSB.print("Humidity: ");
SerialUSB.print(h);
SerialUSB.println("%");
SerialUSB.print("Temperature: ");
SerialUSB.print(t);
SerialUSB.println("*C");
delay(1000);
//-----------HTTP---------------------
String http_str = "AT+HTTPPARA=\"URL\",\"https://api.thingspeak.com/update?api_key=" + Apikey + "&field1=" + (String)t + "&field2=" + (String)h + "\"\r\n";
SerialUSB.println(http_str);
sendData("AT+HTTPINIT\r\n", 2000, DEBUG);
sendData(http_str, 2000, DEBUG);
sendData("AT+HTTPACTION=0\r\n", 3000, DEBUG);
sendData("AT+HTTPTERM\r\n", 3000, DEBUG);
delay(5000);
}
bool moduleStateCheck()
{
int i = 0;
bool moduleState = false;
for (i = 0; i < 5; i++)
{
String msg = String("");
msg = sendData("AT", 1000, DEBUG);
if (msg.indexOf("OK") >= 0)
{
SerialUSB.println("SIM7600 Module had turned on.");
moduleState = true;
return moduleState;
}
delay(1000);
}
return moduleState;
}
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
Serial1.println(command);
long int time = millis();
while ( (time + timeout) > millis())
{
while (Serial1.available())
{
char c = Serial1.read();
response += c;
}
}
if (debug)
{
SerialUSB.print(response);
}
return response;
}
can u send the code to work with telegram bot