Light ON/OFF with ESP32

[David1]

Hello everyone I would like to make an app to turn on / off a 12V light with Bluetooth, how can I do it? (I will use ESP32)

[Juan_Antonio]

Examples of ESP32 and Bluetooth
https://community.appinventor.mit.edu/search?q=esp32%20ble

[David1]

Could you give me an example, even a simple one, to understand how to use it? Connect to Bluetooth and turn a light on and off with the ESP32 (Arduino program and inventor app program)

[Juan_Antonio]

ESP32 Bluetooth classic. Callback. ESP32 CAM

1.- App sends a LED4 on/LED4 off to ESP32 by classic Bluetooth. p62D_esp32_bluetooth_1.aia (2.7 KB) [esp32_bluetooth10] App sends "1", LED4 ON, and get a response: "LED4 is ON". App sends "0", LED4 OFF, and get a response: "LED4 is OFF". App sends "3", get status LED4. [esp32_bluetooth_3b] ESP32, look loop(): #include "BluetoothSerial.h" #define LED4 4 BluetoothSerial SerialBT; void setup() { Serial.begin(115200); initBT(); pinMode(LED4, OUTPUT); } void initBT(){ if(!SerialB…