Hi everyone.
Today I built this circuit, with a difference. I put pots in series with each of the resistors. It oscillates at about 2 hertz.
1. What's the standard method of varying the timing of the circuit?
2. Is it usual to vary the capacitance in a circuit like this? I thought of switching between a 10 uF and 22 uF cap, or switching a second 10 uF cap in parallel with each, but it seems easier to vary the resistance.
3. Varying the 47k resistors makes a huge difference to the timing. But what does varying the 470 resistors do? It seems to alter the brightness of the LED but doesn't do anything to the timing.
Richard