Hi, I built a standard 555 timer circuit for a square wave output signal of 10 Hz. It is the standard circuit for the astable mode, as given in Wikipedia: C = 1 uF, R1 = 6.8 kOhm, R2 = 68kOhm, in my case a 100 kOhm potentiometer. The circuit was mounted on a breadboard and drives a LED with a...
