Use a $9 GSM module & the Hologram network to remotely control any Arduino with Blynk App.
Easy way to unlock and Lock door with Blynk app. Also, I will add code for to Lock & Unlock door by RFID and fingerprint sensor. 3 in 1.
Control your Robot from anywhere using the ARMA IoT shield for UNO and the Blynk App which provides the user interface.
Control an external LED light from anywhere in the world using the ESP8266. The GPIO pin serves as an output source to the LED.
Display information or variables on a LCD available at BLYNK app using IOT.
The easiest way to add WiFi control to your project!
This guide shows you how to add Blynk Board support to the Arduino IDE.
In this project, I'm using a Kortex A1 IoT-sensor microcontroller in order to monitor temperature/humidity/pressure/altitude via WiFi.