The module has a power indicator and a volume controller in addition to the screw terminal for solder-free loud speaker connection. LM386 Module OverviewĪs you can see, the module is based on the SMD version of LM386 thus marked as LM386M (actually LM386M-1). This time I’d like to introduce and use a cheap LM386 module ideal for novices, rather than making it with discrete components. The design is based on the veritable tiny audio amplifier chip – LM386 – which can crank up common audio signals loud enough to drive a standard loudspeaker. You can use this monaural audio amplifier even in any robotic project where you need to amplify audio signals. Here’s a little audio amplifier project you can build from inexpensive and easily available parts.
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