In addition to the slimness and thinness of USB Type-C, other advantages are more worthy of attention. If it can be inserted on both sides, it is thin and durable, and can withstand tens of thousands of repeated insertion and removal. The transmission speed can reach 10Gbps, and the power supply capacity can reach up to 100W. audio etc.
The method of changing the USB Type-C data line to the OTG data line has been introduced before. In one sentence, the CC pin is connected to the ground with a pull-down resistor of about 5.1K, and the operation mode is converted, so that the Vbus pin can be used externally to the U disk, mouse, keyboard, etc. powered by. The mobile phone can directly read the files in the U disk, and can also copy the files in the mobile phone to the U disk, without the need to transfer data through the computer, it is very suitable for use when going out. Detailed definition of USB Type-C interface, teach you to change Type-C data cable to OTG data cable
I just said that the USB Type-C data cable can not only charge and transmit data, but also transmit audio and video. Many Android phones not only replace the traditional Micro USB with the Type-C interface, but also cancel the 3.5mm headphone jack. For such a mobile phone, you can only use the Type-C to 3.5mm headphone conversion cable. After studying the definition of the Type-C interface and related materials, it was found that the pins corresponding to the Type-C output audio and the received microphone signal are as shown in the figure below. . Pins 6, 7, and 8 correspond to the right channel, left channel, and microphone, and pin 1 corresponds to the GND of the headset.
The earphones used on mobile phones are all three sections and four sections, with four cables, namely GND (ground), Mic (microphone microphone), L (headphone left channel), and R (headphone right channel). Using a multimeter to measure a variety of headphones, most of them are the first connection method, only Nokia is the second connection method.
This makes it clear that the pins of Type-C are connected to the earphone microphone, the left and right channels of the earphone, and you can make a USB Type-C to 3.5mm earphone adapter cable. Experience the fun of DIY and enjoy the joy of success. Note that the random Type-C data cable of the mobile phone is basically missing some pins that have shrunk, and check whether the required pins are in good condition before the transformation. In addition, the USB Type-C plug has many pins, which are very dense and difficult to solder by hand. Please do your best.
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