Bluetooth Speaker Diagram

flux

The LM386 is intended to drive a speaker with an impedance of 4 ohms or greater. In most applications, an 8‑ohm speaker is commonly used, which eases current demands and minimizes distortion.
Your project documentation also advises not to use a speaker under 4 ohms.
Would you like any additional details on load matching or performance considerations?
R

rex-flux

Hello

flux

Hello! How can I help you with your Speaker Shield or LM386 design today?
R

rex-flux

Please create a mermaid block diagram of a typical bluetooth speaker with USB-C charging.

flux

Below is a mermaid block diagram that shows a typical Bluetooth speaker system with USB-C charging:
Diagram



  
    
  
  
    
  















USB-C Port
Charging Circuit
Battery
Power Management
Bluetooth Module
"Audio Amplifier (LM386)"
Speaker
This diagram outlines the power and signal flow:
  • The USB-C Port provides power for charging.
  • The Charging Circuit manages the power conversion and charging of the Battery.
  • The Battery supplies power through a Power Management Unit (PMU).
  • The PMU feeds both the Bluetooth Module (for audio streaming) and the Audio Amplifier (LM386).
  • The Bluetooth Module sends the audio signal to the amplifier, which then drives the Speaker.
Let me know if you need any modifications or further details!
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Files

Pins

Symbol

Layout

3D View

VR1
Resistance
10kΩ
RESET
+5V
VAUD
VAUD
J2
J6
VIN
J4
IC1
+3V3
+5V
C2
J3
C1
Capacitance
10uF
J1
Arduino Uno R3 PINOUT
Name

Speaker Shield