Redmi 2 direct power supply + USB_OTG_HUB

This solution is designed for the Klipper host computer Redmi 2 of the 3D printer. The Redmi 2 has stable performance when used as a host computer, saving the screen and host computer. The size of this board is exactly the same and is similar to the battery. The battery protection board can be removed directly. Come down, connect the positive and negative poles with wires and fix them on the edge of the board with hot melt glue! This board integrates direct power supply and OTG-HUB, integrating four HUB female sockets and a typec interface! The micro port of the mobile phone is directly plugged into the micro male socket of the adapter board, and the OTG adapter board is directly plugged into the HUB board. The sizes correspond one to one, compact and beautiful! Eliminate the tediousness of multiple lines, the power supply is 12V! The OTG adapter board in the picture was designed before, and the circuit diagram was connected incorrectly, so the wires in the picture were reconnected to make it normal. The current circuit diagram has been changed!
1. Dimensions have been verified
2. Direct power supply has been verified
3. OTG-HUB has been verified
The Gerber file in the attachment is a file with the power adapter version on the right removed for my personal use. Just go and build the board!
The micro adapter board needs to be cut out with a small hacksaw!
If you have any questions please leave a comment so we can correct them!