NOTICE: DUE TO THE GLOBAL CHIP SHORTAGE THE BM83 MODULE IS LOW-STOCK. BOARDS WILL BE AVAILABLE IN SMALL QUANTITIES AS I CAN GET BM83 MODULES.

This full-feature BM83 development board is designed to allow you to develop and test applications and firmware on the BM83 Dual-Mode 5.0 Bluetooth module.

An I2S Audio Codec daughter board based on the STA369BWTR I2S Audio Codec/Amplifier is currently in development to extend the capabilities of this board.

Example configuration files, design files, and hookup guides can be found in my github repository linked under design files below.

Download the Microchip Bluetooth Audio App for Android and Apple to give you full control over your BM83 speakers.

BOARD FEATURES:

• Based on the BM83 Reference Design circuit by Microchip found HERE
• Audio output jack allows for capless or single-ended output for connecting to speakers, amplifier, or headphones
• Stereo audio input jack
• Analogue microphone input jack with selection for differential or single-ended microphones
• All BM83 pins broken out for easy connection
• Onboard MCP2200 USB-Serial adapter with 3.3v converter capable of powering the board - allows uploading firmware in TEST mode
• Micro-USB port for uploading firmware in native mode and charging LiPo battery
• LiPo battery connector
• 2 onboard LEDs for signaling and status indications
• Voltage supervisor for low-voltage shutdown
• Dedicated PWR/MFP button
• Dedicated RESET button
• Buttons for audio control: Play/Pause, FWD, REV, VOL+, VOL-
• Jumper to enable TEST mode
• Jumper to select power source: battery, UART, STA369BWTR daughter-board (single-source power operation)
• Dedicated UART Header
• Dedicated JTAG Header
• 2A Battery output
• Amplifier Mute/Power control via dedicated pin
• Dedicated 6-pin header for STA369BWTR I2S Codec/Apmplfier connectivity
• Compact form-factor - takes up little bench space
• Mounting holes for securing board
• BM83SM1-00TA module pre-loaded with latest Microchip AT v1.0 firmware for Audio Transceiver in host-mode

BM83 FEATURES:

• Bluetooth 5.0 certified
• HFP 1.7.2 (HF Unit Role Only), HSP 1.2, A2DP 1.3 (Source and Sink), SPP 1.2, AVRCP 1.6, PBAP 1.2
• Supports Bluetooth classic (BR/EDR) and Bluetooth Low Energy (BLE)
• General Attribute Profile (GATT) and General Access Profile (GAP)
• AAC and SBC decoding
• Bluetooth Low Energy Data Length Extension (DLE) and secure connection
• USB, UART, and Over-the-Air (OTA) firmware upgrade
• I2S input/output, two digital MICs, two analog MICs, stereo analog out, aux-in
• MCLK, I2C, two LEDs, PWM, 18 GPIOs
• Built-in Flash for firmware updates
• Built-in and custom voice prompts
• System configuration and audio processing customization with GUI tool
• 16 MHz main clock input
• Transmit Output Power: +10.5 dBm (EDR)
• Receive Sensitivity: -90 dBm (2 Mbps EDR)
• Operating Voltage: 3.2V to 4.2V
• Operating Temperature: -40ºC to +85ºC

This board ships with headers unsoldered. Some light assembly is required. Includes micro-USB cable.