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. .

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 ...

In this project, the author is going to construct a system using a Arduino Development board and GSM module. He connects a switch/sensor to the Arduino board along with the GSM module. The user ...

We’ve already seen ESP32 WiFI & Bluetooth SoC combined with a cellular modem several times already, and a couple of days ago, I wrote about LILYGO T-A7068X ESP23 board with a 4G LTE modem.Iconic ...