Gravity: 386AMP Audio Amplifier Module
LM386-based audio amplifier module with 20× voltage gain, suitable for battery-powered projects. Accepts mic or line-level input.
Pinout
- VCC
Module power supply input. DFRobot wiki specification states power supply 4-12V for the DFR0064 386AMP audio amplifier module.
Type · powerVoltage · 4-12V per DFRobot wiki specification - GND
Module ground / power return for the audio amplifier board.
Type · groundVoltage · 0V reference - IN+
Positive audio input into the LM386 amplifier; schematic exposes the amplifier input as IN+.
Type · signal - IN-
Negative / reference audio input into the LM386 amplifier; schematic exposes the amplifier input as IN-.
Type · signal - Speaker +
Amplified speaker output terminal. DFRobot wiki says the amplified sound is passed to the speaker and specifies an 8 ohm, 0.5W speaker load.
Type · signal
Start wiring
I2S · I2C · Analog · 3.3 – 5 V · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: VCC, GND, Speaker -, IN+, IN-, Speaker +. Schematik maps them to your board in the app.
Amplifiers
15 other optionsMAX98357A and MAX98357 I2S class-D amps, PAM8403 and TPA2012 analog stereo amps, MAX9744 20W stereo amp, LM386 and PAM8302 mono amps, and discrete op-amp packs for signal-level work.
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