In Malaysia, project with GSM is still popular among students. I always search for simple and low cost solution for this application. Introduce TTGO ESP32 SIM800L board, that consists of WiFi, Bluetooth, GSM and GPRS in a single board. Plus, you can program it using Arduino IDE. So, today I would like to share how to get start with TTGO ESP32 SIM800L board and control relay through SMS.
This video will show you how to get start with TTGO ESP32 SIM800L board and control relay through SMS.
This is the list of items used in the video.
This is Arduino sample program to control relay with SMS “RELAY ON” and “RELAY OFF”. Please install 1 additional library at Arduino IDE Library Manager:
- Adafruit Fona Library by Adafruit Version 1.3.5
- Adafruit Fona Library – GitHub
- ESP32 SIM800L: Send Text Messages (SMS Alert) with Sensor Readings
Thanks for reading this tutorial. If you have any technical inquiries, please post at Cytron Technical Forum.