How to Make Touch Sensor With BC547 Transistor 

Wow. single toch, interesting.

can we use a 220 oms resistor

very cool and it works

How much voltage require?

Im a beginner at electronics so dont judge me if im saying something wrong but why couldn't you use only one transistor? I love your channel though❤

I want to do a simulation, what should be used instead of the coil? What is the equivalent of touching a coil with your hand?

भाई यह सेंसर मुझे बनाना आता था पहले भी

Nice, can you make this as on/off as well?