How to send a GET and POST request with AT commands using the SIM900 GSM/GPRS module and the Arduino UNO. This is useful for retrieving data from the Web and sending data to a web server for Internet ...

The Arduino code takes all of the individual dialed numbers and combines them into a phone number. The sketch is set up so that after the 10th digit is read, the phone call is placed using an off ...

And Rx and Tx pin of GSM module is directly connected at Tx and Rx pin of Arduino respectively. And GSM module is powered by using a 12 volt adaptor. 5 volt SPDT 3 relays are used for controlling ...

Click to Enlarge. The board can be programmed in the Arduino IDE by selecting Arduino Mega board. SIM808 modem is controlled with AT commands so that might not be the most programmer friendly board ...

NORVI GSM is an industrial controller based on ESP32 WiFi & BLE SoC and a choice of 2G or 2G/3G/4G LTE cellular modems ... and the SD card. You’d just have to select “ESP32 Dev Module” in the Arduino ...

GSM SIM 900 and Arduino for controlling a relay module were utilized here. Relay module worked in accordance with orders given through SMS and the mobile device then received the feedback of the ...

In this GSM based home automation project we are building a home automation system, where one can control the home appliances, using the simple GSM based cell phone, just by sending SMS through his ...