To use a dark sensor instead, connect LM358 ‘s pin 7 of to one of Arduino’s digital I/O pins. As a dark sensor, the circuit will output as HIGH when it’s dark and a LOW when there’s light. The output ...

On receiving an interrupt from light-dependent resistor (LDR) sensors, ... For this, you have to connect carry-out pin 5 of each CD4026 to clock pin 1 of the next CD4026 as shown in the circuit ...

RGB LED connections to NodeMCU ---> connect the negative of LED to ground and the other lines of LED to three digital pins ,say D1,D3,D5,of the NodeMCU.Similarly connect the other RGB LED to the ...

And the output pin of the IR Receiver is connected with GPIO D35. And the output pin of the DHT11 sensor is connected with the RX2 (GPIO16) pin, and the LDR is connected with GPIO D34 of the ESP32. I ...