And do you know whether they all work? I came across a neat video prepared by amateur radio operator W2AEW, a 10-minute tutorial on checking components. The video gives an example of performing simple ...

Ok, you want to get an oscilloscope. Where do you start? This TechXchange includes content that will be useful for the operation of a scope in your test environment. This includes considerations ...

Now [jgpeiro] has made one which is light years ahead of the toy kits, using a Raspberry Pi Pico, a 100 MHz ADC, and an effort to design a better input circuit.