How To Simulate a 555 Timer With LT SPICE

Continuing with the audio synth and sound effects circuit experiments and LT SPICE simulations.

Adding a 555 tone generator to the op amp mixer, then creating suboctaves with a series of D Flip Flops, mixing the resulting tones for a final output complex tone generator.

Useful resource: House of Jeff online 555 Timer Calculator that allows entering a target frequency and it calculates several sets of components values that get close:
http://houseofjeff.com/555-timer-oscillator-frequency-calculator/

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