Design with Bluetooth 5.0 Audio Receiver Board-Controllable Volume in Cirkit DesignerThe Bluetooth 5.0 Audio Receiver Board-Controllable Volume (Manufacturer: Core Electronics, Part ID: DFR0719) is a compact and versatile module designed for wireless audio streaming. Leveraging Bluetooth 5.0 technology, it ensures high-quality audio transmission with low latency. The board features an integrated volume control, making it ideal for applications where precise audio level adjustments are required.
This circuit is a portable Bluetooth audio system powered by a Li-ion battery. It includes a Bluetooth audio receiver that sends audio signals to a 5V amplifier, which then drives a speaker and a tweeter. The system is powered through a battery charger and controlled by a push switch.
Open Project in Cirkit Designer
This circuit is a Bluetooth-enabled audio system powered by a rechargeable 18650 Li-ion battery. It includes a TP4056 module for battery charging and protection, a PAM8403 amplifier with volume control to drive two loudspeakers, and a Bluetooth audio receiver to wirelessly receive audio signals.
Open Project in Cirkit Designer
This circuit is a Bluetooth-enabled audio system with a microphone input. It uses a 5V Bluetooth Audio Receiver to receive audio signals wirelessly, which are then amplified by a PAM8403 amplifier before being output to a loudspeaker. Additionally, a condenser microphone is connected to the amplifier, allowing for audio input, and an Arduino UNO is present for potential control or further expansion, although it currently has no active code for operation.
Open Project in Cirkit Designer
This circuit is a Bluetooth audio amplifier system powered by a 38.5V battery. It uses a 5V Bluetooth audio receiver to receive audio signals, which are then amplified by a PAM8403 amplifier and output to two speakers for stereo sound.
Open Project in Cirkit DesignerBelow are the key technical details of the Bluetooth 5.0 Audio Receiver Board-Controllable Volume:
| Parameter | Specification |
|---|---|
| Bluetooth Version | 5.0 |
| Operating Voltage | 5V DC |
| Current Consumption | ≤ 30mA |
| Audio Output | Stereo (Left and Right channels) |
| Output Interface | 3.5mm audio jack and solder pads |
| Control Interface | Volume control buttons |
| Communication Range | Up to 15 meters (unobstructed) |
| Dimensions | 30mm x 30mm |
| Weight | 5g |
The board includes several pins for power, audio output, and control. Below is the pinout:
| Pin Name | Type | Description |
|---|---|---|
| VCC | Power Input | Connect to a 5V DC power source. |
| GND | Ground | Connect to the ground of the power source. |
| L_OUT | Audio Output | Left channel audio output. |
| R_OUT | Audio Output | Right channel audio output. |
| GND_OUT | Ground | Ground for audio output. |
| VOL+ | Control Input | Button input for increasing volume. |
| VOL- | Control Input | Button input for decreasing volume. |
| PLAY/PAUSE | Control Input | Button input for play/pause functionality. |
The Bluetooth 5.0 Audio Receiver Board can be used with an Arduino UNO for additional control. Below is an example code snippet to control volume using Arduino:
// Example code to control the Bluetooth 5.0 Audio Receiver Board
// using Arduino UNO. This code assumes buttons are connected to
// digital pins 2 (VOL+) and 3 (VOL-).
#define VOL_PLUS_PIN 2 // Pin connected to VOL+ button
#define VOL_MINUS_PIN 3 // Pin connected to VOL- button
void setup() {
pinMode(VOL_PLUS_PIN, OUTPUT); // Set VOL+ pin as output
pinMode(VOL_MINUS_PIN, OUTPUT); // Set VOL- pin as output
}
void loop() {
// Simulate pressing the VOL+ button
digitalWrite(VOL_PLUS_PIN, HIGH); // Press VOL+
delay(100); // Hold for 100ms
digitalWrite(VOL_PLUS_PIN, LOW); // Release VOL+
delay(1000); // Wait for 1 second
// Simulate pressing the VOL- button
digitalWrite(VOL_MINUS_PIN, HIGH); // Press VOL-
delay(100); // Hold for 100ms
digitalWrite(VOL_MINUS_PIN, LOW); // Release VOL-
delay(1000); // Wait for 1 second
}
The board does not power on:
Bluetooth pairing fails:
No audio output:
Volume control does not work:
Q: Can I use a power supply higher than 5V?
A: No, the board is designed to operate at 5V DC. Using a higher voltage may damage the board.
Q: Does the board support mono audio output?
A: Yes, you can use either the L_OUT or R_OUT pin for mono output, but stereo output is recommended for optimal performance.
Q: Can I connect multiple devices simultaneously?
A: No, the board supports pairing with one device at a time.
Q: Is the board compatible with Bluetooth 4.0 devices?
A: Yes, the board is backward compatible with Bluetooth 4.0, but performance may vary.
This concludes the documentation for the Bluetooth 5.0 Audio Receiver Board-Controllable Volume (DFR0719). For further assistance, refer to the manufacturer's support resources.