Making an adjustable “lab” power supply from scrap

Had an old power supply board lying around that was ripped from dead/old printer. PSU model is CZ57PSE EPSON

C257PSE

To make it work one should connect PSC line to ground.

Schematics of similar power supply:

CZ57PSE schematics
CZ57PSE schematics

To regulate output, made an adjustable voltage regulator using LM2575 that was ripped of some dead router or something similar:

lm2575
lm2575

Finished power supply in a box:

Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply

Making old webcam to work on Windows 10

Was investigating some old Fujitsu Siemens Webcam for some project, but it did not work on Windows 10 – windows did not recognize and did not have any drivers for it.

Hardware ID in device manager shows:

USB\VID_0C45&PID_613B&REV_0101
USB\VID_0C45&PID_613B

Searching by vendor and PID did not help.

On PCB of the webcam, I found that it is SN9C120 + S0I766

Finally searching by SN9C120 that this may be same as HP Basic Starter Camera. That led me to this Microsoft Update page where finally I have found working* driver. This driver installed on Windows 10 without problems, but Camera app was still not working.

On the internet found some general app written on .NET 3.5 for camera capture and finally that was working fine.

If windows update site is not available, you can find the driver here.

*UPDATE good app to test web cam – https://obsproject.com/