76MHz-108MHz Wireless Stereo FM Radio Kit Documentation

Component Name

76MHz-108MHz Wireless Stereo FM Radio Kit

Overview

The 76MHz-108MHz Wireless Stereo FM Radio Kit is a compact, high-performance FM radio module designed for wireless audio transmission and reception in the 76MHz to 108MHz frequency range. This module is ideal for a wide range of applications, including wireless speakers, audio streaming devices, and DIY projects.

Functionality

The Wireless Stereo FM Radio Kit operates as an FM transmitter and receiver pair, allowing for wireless audio transmission between two devices. The module consists of a transmitter unit and a receiver unit, which work together to transmit high-quality stereo audio signals wirelessly.

Key Features

Frequency Range: The module operates in the 76MHz to 108MHz frequency range, providing a reliable and interference-free transmission.
Wireless Audio Transmission: The module enables wireless transmission of high-quality stereo audio signals between two devices, eliminating the need for cables or wires.
Compact Design: The module is designed to be compact and lightweight, making it ideal for integration into small form factor devices and DIY projects.
Low Power Consumption: The module operates at a low power consumption, making it suitable for battery-powered devices and reducing the overall power requirements.
Stereo Audio: The module supports stereo audio transmission, providing a rich and immersive audio experience.
High-Fidelity Audio: The module is capable of transmitting high-fidelity audio signals with minimal distortion or loss, ensuring a clear and crisp audio output.
Simple Setup: The module requires minimal setup and configuration, making it easy to integrate into existing devices and projects.
Standards Compliance: The module complies with relevant industry standards and regulations, ensuring a reliable and safe operation.

Technical Specifications

Frequency Range

76MHz to 108MHz

Audio Format

Stereo Audio (L/R Channels)

Audio Quality

High-Fidelity, 20Hz to 20kHz

Transmission Power

up to 100mW

Reception Sensitivity

-80dBm

Operating Voltage

3.3V to 5V

Current Consumption

20mA (transmitter), 15mA (receiver)

Dimensions

43mm x 33mm x 15mm (transmitter), 40mm x 30mm x 15mm (receiver)

Application Ideas

Wireless Speakers: Integrate the module into wireless speakers for high-quality audio streaming.
Audio Streaming Devices: Use the module in audio streaming devices for wireless music transmission.
DIY Projects: Incorporate the module into DIY projects, such as wireless audio transmission systems or IoT-based audio devices.

Package Includes

1 x Transmitter Module

1 x Receiver Module

1 x Antenna (optional)

1 x User Manual

Note

The module requires an external antenna for optimal performance. The antenna is optional and can be purchased separately.

Pin Configuration

76MHz-108MHz Wireless Stereo FM Radio Kit Pinout Description
The 76MHz-108MHz Wireless Stereo FM Radio Kit is a compact module designed for wireless audio transmission and reception applications. The module features a simple pinout structure, making it easy to integrate into various projects. Below is a detailed description of each pin and how to connect them:
Pinout Structure:
The module has a total of 12 pins, arranged in two rows of 6 pins each. The pinout structure is as follows:
Row 1 (Top Row):
1. VCC (Pin 1): Power supply pin (3.3V to 5V)
Connect to a stable power source, such as a battery or a regulated power supply.
2. GND (Pin 2): Ground pin
Connect to the ground of the power source and other components in the circuit.
3. ANT (Pin 3): Antenna pin (for transmitter)
Connect to a suitable antenna for wireless transmission (e.g., a 1/4 wavelength monopole antenna).
4. VIN (Pin 4): Audio input (left channel)
Connect to the left audio channel output of your audio source (e.g., a microphone or an audio player).
5. VIN (Pin 5): Audio input (right channel)
Connect to the right audio channel output of your audio source (e.g., a microphone or an audio player).
6. EN (Pin 6): Enable pin (active high)
Connect to a digital output from your microcontroller (e.g., an Arduino or Raspberry Pi) to enable or disable the transmitter.
Row 2 (Bottom Row):
1. GND (Pin 7): Ground pin
Connect to the ground of the power source and other components in the circuit.
2. VCC (Pin 8): Power supply pin (3.3V to 5V)
Connect to a stable power source, such as a battery or a regulated power supply.
3. ANT (Pin 9): Antenna pin (for receiver)
Connect to a suitable antenna for wireless reception (e.g., a 1/4 wavelength monopole antenna).
4. VOUT (Pin 10): Audio output (left channel)
Connect to the left audio channel input of your audio amplifier or speaker.
5. VOUT (Pin 11): Audio output (right channel)
Connect to the right audio channel input of your audio amplifier or speaker.
6. LED (Pin 12): Power indicator LED (active high)
Connect to a suitable LED and resistor to indicate the module's power status.
Connection Guidelines:
Use a suitable breadboard or PCB to connect the module to other components.
Ensure correct polarity when connecting the power supply pins (VCC and GND).
Use a suitable antenna for wireless transmission and reception, and ensure it is properly connected to the ANT pins.
Connect the audio input pins (VIN) to the audio source, and the audio output pins (VOUT) to the audio amplifier or speaker.
Use a suitable microcontroller or digital output to control the enable pin (EN).
Connect the power indicator LED (LED) to a suitable LED and resistor to indicate the module's power status.
Important Notes:
The module operates in the 76MHz-108MHz frequency range, which may vary depending on the local regulations and frequency allocation in your region.
Ensure that the module is used in compliance with local regulations and frequency allocation.
Use appropriate shielding and grounding to minimize electromagnetic interference (EMI) and radio-frequency interference (RFI).

Code Examples

Component Documentation: 76MHz-108MHz Wireless Stereo FM Radio Kit

Overview

The 76MHz-108MHz Wireless Stereo FM Radio Kit is a versatile component that enables the transmission of stereo audio signals wirelessly over the FM frequency band. This module consists of a transmitter unit and a receiver unit, allowing for the creation of wireless audio applications such as wireless speakers, headphones, and audio streaming devices.

Technical Specifications

Frequency Range: 76MHz - 108MHz
 Transmission Power: Up to 200mW
 Sensitivity: -90dBm
 Audio Input: Stereo Audio (L/R channels)
 Audio Output: Stereo Audio (L/R channels)
 Operating Voltage: 3.3V - 5V
 Current Consumption: 30mA (Transmitter), 20mA (Receiver)

Code Examples

### Example 1: Basic Audio Transmission using Arduino

In this example, we will use the 76MHz-108MHz Wireless Stereo FM Radio Kit with an Arduino board to transmit audio signals wirelessly.

Transmitter Code (Arduino)
```cpp
#include <Wire.h>

#define FM_TRANSMIT_PIN 9 // Pin for FM transmitter module

void setup() {
  pinMode(FM_TRANSMIT_PIN, OUTPUT);
}

void loop() {
  // Generate a 1kHz tone for demonstration purposes
  tone(FM_TRANSMIT_PIN, 1000);
  delay(1000);
}
```

Receiver Code (Arduino)
```cpp
#include <Wire.h>

#define FM_RECEIVE_PIN 10 // Pin for FM receiver module

void setup() {
  pinMode(FM_RECEIVE_PIN, INPUT);
}

void loop() {
  int audioLevel = analogRead(FM_RECEIVE_PIN);
  if (audioLevel > 0) {
    Serial.println("Audio signal received!");
  } else {
    Serial.println("No audio signal received.");
  }
  delay(100);
}
```

### Example 2: Wireless Audio Streaming using Raspberry Pi and Python

In this example, we will use the 76MHz-108MHz Wireless Stereo FM Radio Kit with a Raspberry Pi to stream audio wirelessly using Python.

Transmitter Code (Python)
```python
import pyaudio
import numpy as np

# Set up audio parameters
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100

# Create a PyAudio object
p = pyaudio.PyAudio()

# Open the audio stream
stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, output=True)

# Generate a 1kHz tone for demonstration purposes
tone = np.sin(2  np.pi  1000  np.arange(RATE) / RATE)

while True:
    # Write the audio data to the stream
    stream.write(tone)

# Close the audio stream
stream.stop_stream()
stream.close()
p.terminate()
```

Receiver Code (Python)
```python
import pyaudio
import numpy as np

# Set up audio parameters
FORMAT = pyaudio.paInt16
CHANNELS = 2
RATE = 44100

# Create a PyAudio object
p = pyaudio.PyAudio()

# Open the audio stream
stream = p.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True)

while True:
    # Read the audio data from the stream
    audio_data = stream.read(RATE)

# Process the audio data (e.g., play it through speakers)
    # ...

# Close the audio stream
stream.stop_stream()
stream.close()
p.terminate()
```

Note: These code examples are simplified demonstrations of the component's functionality and may require additional configuration and tuning for specific applications.

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