My friend Oscar made a funny-sounding little noise synth with the 555 TARDIS v1.0
Here is the schematic for the 555 TARDIS Synth Oscar made:
You can download the code for the Arduino HERE.
Hopefully the 555 TARDIS v2.0 will ease the making of this synth and other experimental circuits. I will try to make a simplified schematic (like the files in THIS POST) for the synth circuit.
Stay tuned for more circuits and simplified schematics to 555 TARDIS v2.0