technolabelectronics / Control-6-Relays-via-DTMF-Call-SMS-with-TIMER-Authorized-Users-Arduino-SIM800L-GSM-EEPROM Public Notifications Fork 0 Star 0 ...

Learn how to build a WiFi-based fire and smoke alarm system using Arduino UNO R4 that sends real-time SMS notifications through the Circuit Digest API for emergencies, without requiring a GSM module.

SIM800L工作频率为GSM/GPRS 850/900/1800/1900MHz，可以低功耗实现语音、SMS、数据和传真信息的传输 SIM800H尺寸为15.8*17.8*2.4mm，能适用于各种紧凑型产品设计需求。

2.SIM800L开关机引脚接在ESP32的GPIO4引脚 3.SIM800L复位引脚接在ESP32的GPIO5引脚 4. SIM800L的 串口 接在了ESP32的26, 27引脚 二. 实验1: PC端通过串口调试助手调试SIM800L 思路: 串口0收到PC的信息就转发给串口1, 串口0 收到串口1的信息就转发给PC ...

Learn how to send SMS with Arduino UNO R4 WiFi using the Circuit Digest Cloud API, Without the need for GSM Module. This step-by-step tutorial includes code and setup instructions.

思路同上一篇:本例程实现了以下功能:通过SIM800L连接网络连接OneNet平台 (通过新版MQTTs协议)调用SHT20的库采集温湿度将温湿度信息上传至One ...

Google has shared more details around its plans on replacing SMS codes with QR codes for user authentication. Read on for the details!

Still, SMS remains the fallback for RCS and iMessage (in cases where RCS chat isn't available) and is still the only texting option on many devices, particularly feature phones.

The Fingerprint Door Lock (FPDL) using Arduino with SIM800L research is designed to improve the security and convenience of door access control by integrating fingerprint recognition with Arduino and ...

The SIM800L module ensures the encrypted transmission of data between the door lock system and users' mobile devices, providing secure and dependable communication. By integrating Arduino, fingerprint ...