Bl12a3 Bluetooth Full 'link' < Full SERIES >
Title: The Story of BL12A3: The Workhorse of Modern Wireless Audio
Limitations:
However, for simple, low-cost, point-to-point serial links, the BL12A3 remains a viable, well-understood solution with a low entry barrier. bl12a3 bluetooth full
Q: What is the operating temperature range of the BL12A3 module? A: The operating temperature range of the BL12A3 module is -40°C to +85°C.
BL12A3 Bluetooth Module: A Comprehensive Overview Title: The Story of BL12A3: The Workhorse of
Based on technical documentation for smart home and audio accessories, "BL12-A3" is the Bluetooth device name used for integrated speakers in luxury furniture items like LED mirrors from manufacturers such as Artforma. Connection Instructions
| Pin # | Name | Type | Function (Full Description) | | :--- | :--- | :--- | :--- | | 1 | VCC | Power | 3.3V DC input. Do not exceed 3.6V | | 2 | GND | Ground | System ground | | 3 | UART_TX | Output | Serial data transmit (3.3V logic) | | 4 | UART_RX | Input | Serial data receive (3.3V logic) | | 5 | RTS | Output | Request to Send (hardware flow control) | | 6 | CTS | Input | Clear to Send | | 7 | RESET | Input | Active-low hardware reset (pull high through 10k resistor) | | 8 | STATUS | Output | LED indicator (blinks on connection) | | 9 | PCM_CLK | I/O | Pulse-code modulation clock (for digital audio) | | 10 | PCM_SYNC | I/O | PCM frame sync | | 11 | PCM_IN | Input | PCM data input from codec | | 12 | PCM_OUT | Output | PCM data output to codec | | 13 | GPIO0 | I/O | Configurable – often used for pairing button | | 14 | GPIO1 | I/O | Configurable – used for mute or LED | | 15 | GPIO2 | I/O | Configurable – power control | | 16 | USB_DP | I/O | Direct USB 2.0 D+ (optional – not always populated) | | 17 | USB_DN | I/O | Direct USB 2.0 D- | | 18 | ANT | RF | Antenna output (if external antenna needed) | | 19 | NC | – | No connect | | 20 | GND | Ground | Secondary ground plane | BL12A3 Bluetooth Module: A Comprehensive Overview Based on
The BL12A3 is a Bluetooth receiver module frequently integrated into smart home products, such as the Artforma Bluetooth Speaker Mirror. It allows you to stream audio wirelessly from smartphones or laptops to built-in speaker systems. Pairing Instructions
The BL12A3 Bluetooth module is a widely integrated wireless audio component primarily used in modern smart home appliances, such as LED bathroom mirrors and vanity lighting systems. This compact module provides high-quality stereo audio streaming and simple connectivity for domestic environments. Core Specifications of BL12-A3