Orange Pie Zero3 Expansion Board for 3D Printers

Project Overview:
An expansion board for the Orange Pi Zero3, suitable for 3D printers. Same size and screw hole layout as the Raspberry Pi, includes a 24V~12V to 5V DC-DC converter with a maximum current of 3A, two USB ports, a 3010 fan, and a 24V/5V selectable power output. (Verified, 50+ hours of printing)
. Based on the Orange Pi Zero0 and Zero2 designs by Bilibili user @大石头Jerry. Redesigned for the different-sized Zero3.
 
Project parameters:
KF128-5.08-2P power input interface (12~25VDC);
TPS54308 DC-DC step-down circuit, maximum current 3A;
Orange Pi Zero3 socket;
3010 fan mount and XH2.54 interface (PC9 pin control);
24V/5V selectable output XH2.54 interface;
two USB expansion interfaces with TVS diodes;
 
Precautions:
Note that the withstand voltage of capacitors C11 and C13 should not be less than 35V;
Note that the withstand voltage of capacitors C15 and C16 should not be less than 16V;
The withstand voltage of the 10uF capacitor in 0603 package should not be less than 10V;
Purchase 10P*2 double-row long female connectors and 13P*1 single-
                                          row long female
                                          connectors to print the parts, or directly purchase heightened female connectors (expensive!)
. Place the printed parts onto the pins of the long female connectors and then install them on the PCB for soldering to ensure the female connectors are stable and do not wobble.
The printed parts are attached.
                                           The PCB
3010 fan operates at 24V, with 2.5mm fan mounting holes. It can be secured with M3 screws after tapping (soldering can be added if necessary for stability). For detailed
 
usage instructions
, please refer to the tutorial by @大石头Jerry on Bilibili.
 
Installation results
                                                        (top right corner of the image).
Finally, here's a look at my Big Fish CC.