Universal Logic Probe 

This video shows how to build a universal logic probe using the popular LM393 and NE555 ICs.
This project includes all construction steps such as soldering the PCB, 3D printing the enclosure, wiring details, and testing the logic probe.
Additional details and all the project files, including KiCAD PCB design, schematic, Gerber files, and STL files (used for 3D printing), are available at jayakody2000lk.blogspot.com/20....
Content of the video:
00:00 - PCB of the logic probe
00:10 - Soldering LM393 and NE555
01:10 - Soldering SMD components
01:59 - Selector switch installation
02:09 - Making and installing probe-tip
04:32 - 3D printing the enclosure
06:17 - Soldering LED indicators
06:47 - Connecting power cables
07:05 - Installing PCB into the enclosure
07:55 - Testing the logic probe

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