A push button is connected to the ESP32 microcontroller. When its state changes, it will trigger an MQTT publish which will toggle the light controlled by a Shelly plus 1 relay.. Keep in mind that you ...

Arduino UNO 2. Push Button 3. LED 4. 220 ohm resistor ( for the LED ) 5. Breadboard Usually we need a resistor for the push button. However, since the Arduino UNO has a pull-up resistor built into it, ...

Like xn1ch1’s application, my push-button is connected to the Vcc rail, with a pull-down resistor to 0V. Xn1ch1’s framework stayed the same, with my adaptations limited to altering the states of three ...

Then define the ATtiny85 IC pins where push buttons are connected. Here we named these buttons Facebook, Windows, and Gmail as these push buttons will be used to login to Facebook, Windows, and Gmail.