We all have gone across a wide variety of Bluetooth devices.
From speaker to lights, everything can be controlled by Bluetooth. The most
recent collection of handsfree has also evolved and has substantially grown
into something different. The handsfree today are regarded as airpods, earbuds,
and several similar names because they tend to be completely wireless and can
be connected via Bluetooth speaker PCB board to a specific mobile device. These
sets of wireless handsfree can be charged and recharged according to one’s
needs and requirements. The Bluetooth blues does not take a break just there,
from lighters to locks, it has covered an array of applications. Let’s try to
open up a simple Bluetooth speaker and see how this thing works.
Teardown a Bluetooth speaker
Let’s consider a water-resistant Bluetooth speaker. Brand
and model does not matter because we would be discussing the functionality and
structure of a very basic Bluetooth speaker. Let me give you a precaution here
that it is never easy to open up a Bluetooth speaker and that you might need to
melt the plastic to avoid any breakage. Once you dissolve the plastic
posterior, you can scrape it off using a knife or a scraper (but not a plastic
one). Once you remove it, the speaker grill would lift open, but it would be
still held together to a certain extent by a range of mini-screws. You would
need to remove those screws as well. Once you remove the screws, you will find
the following components kept together,
- One or two speakers
- A single battery (or in some case pair of batteries)
- A small circuit board attached with the battery
- A primary circuit board
- A charging junction
- A power supply circuitry
Controls for the audio that are usually interconnected
between batteries, Bluetooth and the speakers
The Bluetooth circuit, otherwise known as Bluetooth speaker
PCB board which would mainly be connected to the speakers.
A secondary circuit, which controls the audio inputs and
outputs. It is interconnected between power junction, USB connection, power
button, and the Bluetooth speaker PCB board.
Invisible sets of LED which can not be seen outside a
speaker
Let’s try to understand this
If you dig-in deeply, you will find individual small
connections and circuit boards that you might think are unnecessary. Still,
they are not because they serve as antennas that regulate the voltage and
amplifiers. The Bluetooth circuit or the PCB board is the primary circuitry in
any Bluetooth enabled device. The other components can be varied; for example,
you would not find a speaker junction or anything interrelating audio in a
Bluetooth LED. You would rather see a multitude of sight circuitries, which
would be helping the Bluetooth to process its magic. I would not be
recommending you try and open up an LED, which is Bluetooth enabled because it
can be hazardous. The only thing that wirelessly makes a Bluetooth device
function is the Bluetooth speaker PCB board as it interconnects all other
circuitries to Bluetooth instead of a dash of wires.
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