Without further delay, let's make what I like to call Master Control: our clock sources. I like to use the 40106 because you get 6 oscillators from one ic. You could also use a 4093 to make 4 oscillators; we'll look at that another time.
Essentially, we are creating an oscillator by connecting the output of each schmitt trigger (there are 6 on the 40106), back to the input. This creates a beautiful feedback loop. Add a pot and a cap and you have yourself a clock source that can be in the audible range to low frequency/LFO range.
- Connect a capacitor between pin 1 and ground
- Connect lug 1 to lug 2 of your potentiometer (use a bit of wire)
- Run a length of wire to lug 3 and connect it to pin 1 of the 40106
- Run another wire to lug 2 of the pot and connect it to pin 2 of the 40106
- Pin 2 is your output, so add another wire here.
I recommend experimenting with the capacitor, which along with the pot, determines the frequency of the oscillator. Generally, I like to use 0.22uF, 0.47uF, 0.1uF for the audible ranges and 1uF to 10uF for the LFO.