SPK-B Bluetooth audio module

Feature

• Class2 power level.
• The built-in lithium battery charging circuit.
• Powerful noise elimination circuit.
• Effective transmission distance up to 20 meters.
• Follow the Bluetooth V2.0 + EDR Bluetooth specification.
• Support A2DP V1.2, AVRCP V1.4 profiles
• Integrated EEPROM configurable operating modes and parameters
• Stereo audio output can directly drive 40mW @ 32Ωspeeker without the need for DC-blocking capacitor
• Integrated power-on reset and programmable low voltage monitoring function
• 5 Control buttons, including the switch machine play pause button, volume plus the volume down on the one, the next one. Supports no button automatic connection function.
• 2 LEDs used to indicate different working status

Application Ideas

• All kinds of high-quality Bluetooth stereo audio receiving device.
• All kinds of high-quality Bluetooth stereo speakers, audio.

Cautions

• Power supply decoupling capacitors should be located close to the module pins.
• The module substrate should be fully Shop (antenna below can not shop), and in the position of the substrate covered with insulating white oil.
• The audio circuit ground and other ground should be separated, sufficient grounding at the power ground separate alignment
• Module ground should be separated from the other ground at full power ground traces alone in the ground.
• All the ground should be a large number of shop copper, multi-punched.
• The module antenna placed as far as possible the edge of the base plate, the antenna near metal objects can not have, to ensure good communication with the outside world.
• Is preferably the antenna protruding floor, or to the floor below the antenna milling empty.

Specification

• BT-Speaker of the module name
• Module pairing code 0000
• Baud Rate 115200
• Module size: 14x23mm
• Working pressure VBAT: 3.4 - 4.2V