• Using a solder paste dispensing needle, we first add solder paste to each component pad, one by one. We're using standard 37/63 solder paste here.
• Next, we pick and place all the SMD components in their places on the PCB using an ESD tweezer.
• With extreme caution, we lifted the complete circuit board and placed it on the SMT hotplate, which increases the PCB's temperature to the point at which the solder paste melts and all of the components are connected to their pads.
• Next, we added the Through Hole USB Port in place and then soldered its pads from the bottom side of the circuit using a soldering iron.

The circuit is now completed.

The result of the PCB Assembly process is this power module, which can provide a consistent output between 3 and 12 volts, depending on the source.

To Test this Board, we first connected it with our previous DIY Bench Power supply, which you can checkout from here-

https://www.hackster.io/Arnov_Sharma_makes/diy-bench-power-supply-6f32d3

We gave the power module 13V by connecting the bench power supply's alligator clips to the module's input terminals. We connected our multimeter to the output side, and the result showed 5.1V, indicating that the setup was successful. When several PD-using devices are connected, the output voltage will vary.

After that, we attached a LattePanda Version 1 to the power module's output via a USB cable, and the device powered up as anticipated.

The power module is operating as intended. The primary goal of this project was to create a tiny power module that resembled the MH-KC-24 power module that I had previously used in another project.

https://www.hackster.io/Arnov_Sharma_makes/battery-box-version-1-274d45

Since this module was bulky and difficult to use while working on a small project, we made our own module with the same IC but a smaller form factor.

With Our Power module, we will be preparing a Lattepanda handheld device, which will be shared soon in a different article.

This project was a success and needs no further revisions.

In addition, we appreciate PCBWAY's support of this project. Visit them for a variety of PCB-related services, such as stencil and PCB assembly services, as well as 3D printing services.

Thanks for reaching this far, and I will be back with a new project pretty soon.

Peace.