There is only USB interface in the car, but there is no AUX interface. How to connect ipad to car stereo?

Need DIY: weld the' input interface' to the midline contact of the car audio circuit board and the' ground' point of the volume potentiometer. The key is that your host supports Apple, and the wiring workload is huge. The following methods are recommended.

1, music can be stored in a USB flash drive and plugged into the U-port for listening.

2. Use a Bluetooth audio receiver.

3. Use FM transmitter.

(1) Auxiliary: refers to the audio input interface, which can output the audio of electronic audio devices including mp3 (universal headphone jack), and can output the music in these devices through the car stereo.

(2) Universal serial bus (USB for short): it is a serial bus standard for connecting computer systems with external devices, and it is also a technical specification for input and output interfaces. Widely used in personal computers, mobile devices and other information and communication products, and extended to photographic equipment, digital television (set-top box), game consoles and other related fields. The latest generation is USB 3. 1, the transmission speed is 10Gbit/s, the three-stage voltage is 5V/ 12V/20V, and the maximum power supply is 100W. The new Type C plug-in is no longer positive or negative.

(3) U disk: U disk, full name USB flash drive, English name "USB flash drive". It is a miniature high-capacity mobile storage product, which uses USB interface and does not need physical drive. Connect with computer through USB interface to realize plug and play. The name of USB flash drive comes from a new storage device produced by Netac Technology, which is called "USB flash drive" and is connected by USB interface. After the USB flash drive is connected to the USB interface of the computer, the data of the USB flash drive can be exchanged with the computer. Later, because Netac has registered a patent, the equipment with similar technology was renamed as "USB flash drive" instead of "USB flash drive". Later, the name U disk was widely known because it was easy to remember, and it was one of the mobile storage devices.

(4) Bluetooth audio receiver: Bluetooth receiver refers to a receiver that can accept Bluetooth transmission mode, generally supports PC and Mac, and is widely used in life. For example, we commonly use Bluetooth headsets, Bluetooth speakers, Bluetooth mice, Bluetooth keyboards and so on. All belong to the Bluetooth receiver.

(5) FM transmitter: It is a personal micro-broadcasting station, which can convert audio signals from various portable audio and video players such as Discman, MD and MP3 (including Apple iPod) into high-fidelity wireless FM stereo signals and transmit them. As the receiving object, the car or home radio can enjoy stereo music, thus making the music "go to war". Expand the application functions and application environment of these players in your hands.