The bluetooth speaker refers to the built-in Bluetooth chip of the speaker, which replaces the traditional wire connection with a Bluetooth connection, and is connected with a Bluetooth playing device such as a mobile phone, a tablet computer or a notebook to achieve a convenient and quick purpose.
Can we also DIY retrofit a Bluetooth speaker?
P01 DIY Bluetooth Speaker
First, preparation for production
1. Material preparation
1, 1 portable speaker (or other ordinary speakers)
2, Bluetooth module
3, wire tools, etc.
P02 DIY material
Second, the design principle
1, the principle
The principle of DIY is actually quite simple, as long as the audio signal received by the Bluetooth module is sent to the audio input of the portable speaker and amplified, and then output through the speaker. The power amplifier module power supply of the Bluetooth module and the speaker is directly powered by its internal lithium battery.
P03 principle icon
Third, DIY process sharing
The Bluetooth module used in this DIY is removed from the old Bluetooth headset. It can be used as a Bluetooth module by removing its original battery, microphone, and earbuds:
P04 Bluetooth module
Portable speaker, two speakers, better speaker effect, and USB and SD card playback:
P05 portable speaker
The main chip and peripheral circuits of the multi-function digital circuit board inside the speaker:
P06 Digital Control Board
There are digital board operation interface and socket on the speaker; audio interface, charging interface and switch button on the front of the speaker:
P07 speaker operation interface
The output of the Bluetooth module is soldered to the input of the speaker amplifier, and the power supply is powered by a lithium battery inside the speaker:
P08 welding module
The welding is completed by testing:
P09 test completed
Fourth, said at the end
The effect of this DIY is ideal. After the speaker is powered on, the Bluetooth module works at the same time. The Bluetooth connection of the mobile phone can play music. The distance between 10M and the like can transmit audio signals without distortion and without interruption. The playback effect is also very good. Not bad.
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Can we also DIY retrofit a Bluetooth speaker?
P01 DIY Bluetooth Speaker
First, preparation for production
1. Material preparation
1, 1 portable speaker (or other ordinary speakers)
2, Bluetooth module
3, wire tools, etc.
P02 DIY material
Second, the design principle
1, the principle
The principle of DIY is actually quite simple, as long as the audio signal received by the Bluetooth module is sent to the audio input of the portable speaker and amplified, and then output through the speaker. The power amplifier module power supply of the Bluetooth module and the speaker is directly powered by its internal lithium battery.
P03 principle icon
The Bluetooth module used in this DIY is removed from the old Bluetooth headset. It can be used as a Bluetooth module by removing its original battery, microphone, and earbuds:
P04 Bluetooth module
Portable speaker, two speakers, better speaker effect, and USB and SD card playback:
P05 portable speaker
The main chip and peripheral circuits of the multi-function digital circuit board inside the speaker:
P06 Digital Control Board
There are digital board operation interface and socket on the speaker; audio interface, charging interface and switch button on the front of the speaker:
P07 speaker operation interface
The output of the Bluetooth module is soldered to the input of the speaker amplifier, and the power supply is powered by a lithium battery inside the speaker:
P08 welding module
The welding is completed by testing:
P09 test completed
Fourth, said at the end
The effect of this DIY is ideal. After the speaker is powered on, the Bluetooth module works at the same time. The Bluetooth connection of the mobile phone can play music. The distance between 10M and the like can transmit audio signals without distortion and without interruption. The playback effect is also very good. Not bad.
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