Burkhard Kainka (231)

1-08-2023 | Let’s take a look at how a neon lamp can be used as a photocell.

6-04-2023 | When I first held the HackRF One in my hand, I knew almost nothing about it, except that it is an SDR receiver and transmitter up to 6 GHz a...

8-11-2022 | You could say that almost every electronics project is not really complete until it gets its own PCB. Only then can you fully test the conce...

1-11-2022 | You could say that almost every electronics project is not really complete until it gets its own PCB. Only then can you fully test the conce...

1-08-2022 | The following principle applies to ultrasonic sensors. But it also works in the audible range with two piezo transducers. 

1-08-2022 | The circuit is very simple: an ultra-bright green LED, two 10-MΩ resistors, two 100-nF ceramic capacitors and a push-button switch. When you...

1-08-2022 | This two-transistor circuit forms a simple square-wave generator with a frequency of about 5 kHz. The connection to the LED passes over mult...

1-08-2022 | The two-finger organ is a musical instrument for adepts and is just about as difficult to play as a Theremin.

1-07-2022 | What do capacitors have in common with wires in water or fingers touching metallic surfaces? Quite a lot, as the author discovered with his...

19-05-2022 | What do capacitors have in common with wires in water or fingers touching metallic surfaces? Quite a lot. You can use skin impedance for a v...