Sound Recording Module

Product Description

Sound Recording Module

Property
 Onboard power amplifier module, the maximum output power of 2.5W, the sound loud.
 Onboard volume control can be adjusted according to the actual installation requirements.
 The new circuit design, anti-interference ability.
 smaller. 16mm * 18mm
 Supports mono 8 8K and 16K sampling rate, sound can be arbitrarily segmented, each sound
Sound can be any length.
 Voice messages can be segmented recording, playback segments. Voice messages can be changed at any time
 onboard FLASH memory. Lower cost, better reliability.
 New Standby mode, standby operating current of only 0.3mA
 
 
Pin Function
 

Numbering
Mark
Features
Remark
1
VCC
Power + (4.75 ~ 12V)
 
2
TXD / D4
TXD use as a recording mode. Operating mode can be set to D4
 
3
RXD / D3
RXD use as a recording mode. Operating mode can be set to D3
 
4
D2
2-way playback control pin
 
5
D1
The first way playback control pin
 
6
GND
Power Ground
 
7
VO-
Speaker Audio Output +
 
8
VO +
Speaker Audio Output –
 
9
OUT
No amplified audio output
 
10
NC
Floating
 
11
BUSY
Under work mode, playback is high
 
12
MODE
Mode Selection: High playback mode; Low recording mode
  
Playback method
Typical playback circuit as follows
 
Module response D1, D2, D3, D4 pin rising quotes (added debounces processing speed of response 50Hz).