send SMS, receive SMS, make a call. Reference: SIM800L V2 tutorial with arduino (Send SMS, Receive SMS, Make a call) Notes: Arduino Mega 2560 was used in this code, you can change the txd_pin and ...

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If you get the above results on your serial monitor. You can move forward to making calls and messages. If you are curious you can also visit the sim800l AT commands manual to check out all the ...

Now that we have completely understood how the SIM800 module works, we can connect all the required wires to the ESP32 Dev Board and check if the module is working properly or not. Next, we will write ...

Because the SIM800L module is very flexible, a great GSM project design can be relatively simple. ... Here’s an application example configured to send an SMS in response to a security switch action. .

We have already developed the project, Interfacing SIM800L GSM module with Arduino to Send SMS in our previous article. ... now I hope you understand the code very well. Let's feed this code to ...

It is very easy to build an “SMS-controlled relay” with the help of a cheap GSM modem module and a small microcontroller board. Here, I’m using the SIM800L and Arduino Nano V3 to develop a nifty ...

How to send a GET and POST request with GSM/GPRS module. This is useful for retrieving data from the Web and sending data to a web server. Tested on SIM900, SIM7000e, SIM800L GSM modules. Could work ...