DC 5V 4 Channel 4ch Relay Module with Bluetooth 4.0 BLE for Android and Apple Phones

Description

What it is

The 4-channel DC 5V relay module with Bluetooth 4.0 BLE is an electronic device that allows you to control devices via smartphone or tablet. Connect devices to a circuit through relays and use Bluetooth technology for interaction.

Features

• 4 relay channels
• Power supply: DC 5V
• Bluetooth 4.0 BLE connection
• Compatibility with Android and iOS devices

What it is for

This module is ideal for home automation, robotics, and remote device control projects. You can use it to create remote lighting systems, control appliances, manage security systems, and much more. Its compatibility with Arduino and Raspberry Pi makes it a versatile component for electronic prototyping projects.

Tutorial: How to use the DC 5V 4-channel 4ch Relay Module Bluetooth 4.0 BLE

This module allows you to control electronic devices via Bluetooth from your smartphone. Ideal for home automation and robotics projects.

What you need

• Arduino or compatible
• Android or Apple smartphone
• USB cable
• 1kΩ resistor (optional)

Steps

1. 1. Connect the module to your Arduino via pins D2, D3, D4, D5.
2. 2. Connect the module to your smartphone via Bluetooth.
3. 3. Upload the Arduino code to your Arduino.
4. 4. Configure the module for your Bluetooth network.
5. 5. Control the relays using the code.
6. 6. Add a 1kΩ resistor between the relay and ground for protection.
7. 7. Check the datasheet for additional settings.
8. 8. Test the module with various devices.

Example code

```void setup() {  Serial.begin(9600);  Bluetooth.begin(115200);}void loop() {  if (Serial.available()) {    int value = Serial.parseInt();    if (value == 1) {      relè1.on();    } else if (value == 0) {      relè1.off();    }  }}```

Mini project

Create a remote lighting system. Connect the relay to the chandelier and control the light intensity via your smartphone.

Common mistakes

• Forgetting to install the Bluetooth driver on your smartphone.
• Connecting the relay pins in reverse.
• Forget to update the Bluetooth library.
• Not check the specifications on the datasheet.

Recommended accessories

• Arduino Uno
• USB cable
• Relay
• Chandelier

Frequently asked questions

How can I control multiple relays?
Connect additional relays to the remaining pins of the module.

Does the module work with iOS?
Yes, the module supports both Android and iOS.

What are the minimum requirements for my smartphone?
Your smartphone must support Bluetooth 4.0.

Does the module require external power?
No, the module is powered through the Arduino.