How to make Simplest ever Oscilloscope Clock

Published at : 23 Dec 2025

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This time I decided to make an Oscilloscope clock in the simplest possible way. It even avoids the use of a mains transformer which is expensive and difficult to obtain, and initially the device works on 12V. But despite its simplicity, it is fully functional, highly adjustable, and has the option of automatically setting the time via the Internet. So it even outperforms more complex devices of this class.
SAFETY NOTE: Please do not attempt to recreate the experiments shown on this video unless you are familiar with High Voltage Safety Techniques! Direct Current even above 60V maybe lethal, even when the AC supply voltage has been disconnected due to the stored energy in the capacitors. I have no responsibility on any hazards caused by the circuit. Be very careful. This is a humble request.

Chapters:
0:06 Short Demo
2:13 Description
3:30 ESP32 X-Y Signal Generator
5:13 Control Potentiometers
5:55 Inside
9:16 Demonstration - Clock
12:24 Input Signal Modes
13:10 Different Figures and Shapes
15:38 Conclusion
16:48 Building

Detailed instructions, Schematic and Code at:
https://www.hackster.io/mircemk/how-to-make-simplest-ever-oscilloscope-clock-357de6

If you are interested in this area, look at the Playlist with all my game projects at:
https://www.youtube.com/watch?v=k_Eh3fo5FgE&list=PLAxrqEdgtyUVwklrr0-o5DU8HtXBR1BmG

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by mircemk
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#electronics #oscilloscope #CRT #tube #clock #ESP32 #pcbway