Basically, to send SMS from NodeMCU or ESP8266 we have two options: The first option is using an external GSM module with an active SMS plan availed SIM card. We have already developed the project, ...

SMS_TIMEOUT: Indicates that the SMS sending operation timed out. Note: Make sure to connect the GSM module (SIM800L) to the appropriate pins on the Arduino Mega as specified in the code. About ...

python script (index.py), file of sqlite3 datatabase, htaccess file, text file with key (token) to HTML form, This script is checking which user ran their. If this script will by execute by apache ...

In this way, we can send SMS using ESP32 without the need for GSM Modules. If you're curious about how to send SMS using GSM, then check out this guide to send SMS from ESP32 using GSM. Ok, that’s all ...

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 ...