on video 5vdc Relay Module Connection and Working | single relay module connection | 5v relay connection

 Interface Relay Module With NodeMCU

I hope you know what is an Relay Module. Have you wondered how the relay module works?

In this Instructable we will see how an Relay works and how to Interface Relay with NodeMCU.

List of parts required for this instructable :

Hardware Required

NodeMCU

Relay Module

Breadboard

LED (optional)

Micro USB cable

Connecting Wires

Software Required

Arduino IDE (with ESP8266 Library installed)

Relay is a electrically operated switch. Generally used relay modules are 5v / 12v.

The relay uses an electromagnet to mechanically switch electric appliances.

A relay can be operated by a relatively small electric current that can turn ON or OFF a much larger electric current.

Using relays is safe as there is no any physical contact between NodeMCU and AC devices.

Relay is basically act a switch between electrical load and NodeMCU.

Relay have two configuration NO (Normally Open) & NC (Normally Close).

Relay have coil which is energized by 5v, when coil energized switching action takes place, based on NO-NC configuration.

If relay is NO configuration then when coil is energized switching action takes place from NO-NC then load will be connected.

Then Create a new sketch and paste the code below in the Arduino IDE and hit Upload.

 Interface Relay Module With NodeMCU

I hope you know what is an Relay Module. Have you wondered how the relay module works?

In this Instructable we will see how an Relay works and how to Interface Relay with NodeMCU.

List of parts required for this instructable :

Hardware Required

NodeMCU

Relay Module

Breadboard

LED (optional)

Micro USB cable

Connecting Wires

Software Required

Arduino IDE (with ESP8266 Library installed)

Relay is a electrically operated switch. Generally used relay modules are 5v / 12v.

The relay uses an electromagnet to mechanically switch electric appliances.

A relay can be operated by a relatively small electric current that can turn ON or OFF a much larger electric current.

Using relays is safe as there is no any physical contact between NodeMCU and AC devices.

Relay is basically act a switch between electrical load and NodeMCU.

Relay have two configuration NO (Normally Open) & NC (Normally Close).

Relay have coil which is energized by 5v, when coil energized switching action takes place, based on NO-NC configuration.

If relay is NO configuration then when coil is energized switching action takes place from NO-NC then load will be connected.

Then Create a new sketch and paste the code below in the Arduino IDE and hit Upload.