What is Type-C interface

Type-C stands for USB Type-C interface, which is a brand new form of USB interface. The USB Type-C interface has a width of 8.3 mm and a thickness of 2.5 mm, while the Micro USB interface has a width of 7.4 mm and a thickness of 2.35 mm. Type-C is slightly larger than the Micro USB interface and slimmer than traditional USB.

In addition to the slim and compact USB Type-C, other advantages are more worthy of attention. If it can be plugged in regardless of the front and back sides, it can withstand tens of thousands of repeated plugs and unplugs after use, the transmission speed can reach 10Gbps, the power supply capacity is up to 100W, and the expansion ability is not only capable of charging and data transmission, but also Audio, etc.

I have already introduced the method of changing the USB Type-C data cable to the OTG data cable. In one sentence, it is to connect the CC pin to the ground with a pull-down resistor of about 5.1K, and convert the operation mode to make the Vbus pin external 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. There is no need to transfer data through the computer, which 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

Just said that the USB Type-C data cable can transmit audio and video in addition to charging and transmitting data. 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 mobile phones, if you want to use headphones, you can only use Type-C to 3.5mm headphone conversion cable. After studying the Type-C interface definition and related materials, it is found that the pins corresponding to Type-C output audio and receiving microphone signals are shown in the following figure. . Pins 6, 7, and 8 correspond to the right channel, left channel, microphone and microphone, and pin 1 corresponds to the GND of the headset.

The headsets used on mobile phones are all three-section four-section type, with four cables, namely GND (ground), Mic (microphone), L (headphone left channel), R (headphone right channel). Use a multimeter to measure a variety of headsets, most of which are the first connection method, and only Nokia is the second connection method.

This makes it clear that the pins of Type-C correspond to the headphone microphone and the left and right channels of the headphone, and you can make a USB Type-C to 3.5mm headphone adapter cable. Experience the fun of DIY and enjoy the joy of success. Note that the Type-C data cable of the mobile phone is basically missing some of the pins that have shrunk. Before the transformation, check whether the required pins are intact. In addition, the USB Type-C plug has many pins, so it is very difficult to weld by hand, so please do your best.