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The product is a shield designed for recording and playback, featuring a built-in 128Mbit SPI Flash memory with a maximum recording duration of up to 517 seconds. The product offers a MicroSD interface, allowing you to directly store audio files on a MicroSD card for playback, providing high convenience.
The shield type makes the product easy to insert into the BMduino-UNO BM53A367A or Arduino UNO for use. It is suitable for applications such as voice playback devices and phonographs.
Includes speaker interface, can use with 8Ω/2W speaker
Interface: SPI
Shield dimension: 67 x 53.34 x 23 mm
Shield net weight: 116g (includes the speaker)
Product includes: BMV36T001 x1, speaker x1
DESCRIPTION
The product offers two play modes: recording/playback mode and broadcast mode. When using recording/playback mode, the recorded files are stored in the built-in Flash memory. If users select broadcast mode, audio files are required to be pre-loaded onto a MicroSD card, and then users need to insert the card into the MicroSD interface on the product for playback.
In stand-alone mode, the on-board multi-functional button can be controlled in five directions: up, down, left, right, and center. You can achieve different functions by either short-pressing or long-pressing (holding for more than 3 seconds) the button.
DIRECTION
SHORT-PRESSING
LONG-PRESSING
LEFT
Play the previous recording
―
RIGHT
Play the next recording
―
UP
Volume +
(Level 1~14, default: 6)
―
DOWN
Volume -
(Level 1~14, default: 6)
―
CENTER
Start/Stop recording
Erase all the recordings
If you would like to play the audio stored on the MicroSD card, you need to use networking mode.
HARDWARE OVERVIEW
PIN DESCRIPTION
Other pins are not used.
Pin name
BM53A367A pin
Function
IOREF
IOREF
Logic reference voltage pin
RESET
RESET
Reset the development board
5V
5V
Power supply: 5V
GND
GND
Ground
SS2
~D4
SPI2 slave select pin (SD card)
SCK2
~D5
SPI2 clock line (SD card)
MOSI2
~D6
SPI2 master output and
slave input data line (SD card)
MISO2
D7
SPI2 master input and
slave output data line (SD card)
D/C
~D8
SPI bus data type switching
⬥ High: WAV audio data transmission
⬥ Low: protocol commands transmission
REQ
~D9
Request for audio data
when playing audio from the SD card
SS
~D10
SPI slave select pin (BMV36T001)
MOSI
~D11
SPI master output and
slave input data line (BMV36T001)
MISO
~D12
SPI master input and
slave output data line (BMV36T001)
