Seemingly, this ESP-01 Wi-Fi Relay can be used as a smart on/off switch for handling any device connected to it. When a pre-programmed ESP module is inserted into the relay board, it not only serves ...

Sometimes we need to control high voltage appliances to work with our components. To control that high current, we send an MCU command to a relay module. There are many relay modules out there that ...

Connections are given Below : Arduino Relay Module +5V VCC GND GND PIN2 Signal Step 3 (Upload Sketch to Arduino) Download "sms_call_gate.ino" Sketch from the repository and Upload it to Arduino.

All four relays are connected with Arduino at 8,9,10 and 11th pins (In1, In2, In3, and In4), and 1 12v adapter is used for powering the circuit. We have connected 220VAC bulb at the terminal block of ...

C4 and C5 are used as decoupling capacitors. The “Serial” is a 3-Pin 2.5mm XH connector to connect a TTL USB-to-Serial converter to the board. It is used the program the module and read the serial ...

Arduino has launched the Nano ESP32 development board powered by Espressif’s ESP32-S3 Wi-Fi and Bluetooth capable 32-bit microcontroller. ... Transform your product pages with embeddable schematic, ..