[Training Camp_Basic Class] FE1.1S One to Four Hub +636382A

FE1.1S one-to-four hub: The FE1.1S chip packaged in SSOP-28 integrates four USB input ports, which can realize one-to-four connection with the computer. The average writing speed of each USB is still about 8M/S ( The general speed of USB2.0) effectively solves the problem of insufficient USB ports on laptops. Update: 2020/8/13 During the welding and debugging process, it was found that the fuse (number F5) at the Micro USB interface will cause insufficient power supply when more than 2 U disks are connected, and the LED will light up for 1 second and then turn off for 3 seconds. Personally It is speculated that it may be caused by the self-restoring fuse constantly blowing, so the fuse was removed from the actual product and a lump of solder was directly applied to short-circuit it. In the end, the actual product was able to work normally! Physical map: [IMG_20200813_204040_1.jpg] physical and shell: [IMG_20200813_204126.jpg] to access 3 U disks and a mobile phone: [IMG_20200813_203528.jpg] ! [QQ Picture 20200813210454.png]