How do you use a 2 channel relay module?

How do you use a 2 channel relay module?

Two Channel Relay Module Pinout

1. VCC pin supplies power to the built-in optocoupler and optionally to the electromagnet of the relay (if you keep the jumper in place)
2. GND is the common Ground connection.
3. IN1 & IN2 pins are used to control the relay.
4. JD-VCC supplies power to the electromagnet of the relay.

What does a 2 channel relay do?

This module contians two relays that are electrically isolated from the controlling input. The relays can be used to switch higher voltage and current loads than a microcontroller can traditionally accomplish.

What is digital output example?

Digital output exists when a voltage is applied to a pair of digital output leads. This voltage can be sourced (sinked) by internal or external sources. In addition, there can be pulse output when the device is active. Relay output exists when contacts are closed on a pair of relay leads.

Can you control a relay module with Arduino?

Controlling a relay module with the Arduino is as simple as controlling an output – you just need to send HIGH or LOW signals using an Arduino digital pin. With the relay module you can control almost any AC electronics appliances (not just lamps).

What are the pins on the relay module?

The following figure shows the relay module pinout. The six pins on the left side of the relay module connect high voltage, and the pins on the right side connect the component that requires low voltage—the Arduino pins. The high-voltage side has two connectors, each with three sockets: common (COM), normally closed (NC), and normally open (NO).

How many terminal pins are in a DPDT relay?

Such relay is actually a combination of two SPST relay structures with only one coil pin pair. iv) Double Pole Double Throw (DPDT) – Such relay has 8 terminal pins which consist of a pair of coil pins, two 3 pins group for each group consists of a common pin, normally open (NO) pin and normally (NC) pin.

When to use NC or NC in Arduino relay?

NC (Normally Closed): the normally closed configuration is used when you want the relay to be closed by default, meaning the current is flowing unless you send a signal from the Arduino to the relay module to open the circuit and stop the current.