THING MODULATOR PROBLEM

[tedsorvino1]

Just for your interest.
I found some time to make some changes. So for the thing modulator what works for me is changing the 9v resistor to 1k (100uf for the coupling cap is ok). The rest of the circuit works fine.
Then for the instructables circuit (ring modulator and low pass filter combined), change the LPF input resistors of 100k and 4.7k from the modulator IC out, to just a 100nf cap from  the IC1 out straight to the IC2 input. (And maybe the 10uf supply cap of the op amp to 47uf- at least that's what I did). It works much better that way for me.
Cheers.

[garcho]

^ glad you got it working! Time to make some weird sounds now