3.5mm connector. The earphone cable needs to be connected with a shrink tube. The specific steps for connecting the headphone plug are:
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1. Bend the wire 90 degrees with your thumb, straighten the earphone wire, and try down the connector along the wire. Once you get to the point where it breaks, it's going to sound loud and fragmented and erratic. You can bend or twist the spot again, and tape it up when you find a problem.
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2. Slide the tube down the wire and try it. The tube looks similar to the rest of the cable. If you break the earpiece, you can use this retraction to replace the broken part.
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3, use the wire stripper to open a 1.25cm gap, do not cut the contents. You can see that the two lines are together (left channel, right channel) separated from each other, so the channels are different, and the copper in the middle is what separates the two lines.
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4. Join the threads. You can use a twisted joint or a straight joint. In a twisted joint, parallel the two exposed parts and loop them together.
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5. Weld all the joints at all points and then let them cool. After cooling, tie the two pairs of joints to ensure that the red and white lines are separated from the ground.
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6, put the shrink sleeve on the fracture, and then heat. After heating, the tube will shrink to a quarter of its previous size, which will make the repaired line stronger.
Headset chip and wire connection method
For example, find a suitable power supply on the speaker board to supply power to the module; Then find the audio input wire of the audio decoding chip on the speaker board, and connect the audio wire pin on the Bluetooth module correctly.
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It is also necessary to find the matching enable pin of the Bluetooth module, and then a button comes out, and the module enters the matching state through the button, so that the mobile phone is likely to find the Bluetooth module for matching. It's probably okay. You can connect it and use it