Dyne's Audio Modulator Circuit

[kresty]

Hmm, I wonder - if you only used one channel instead of both, then you could ditch the resistor to the analog input, or maybe make it smaller - then you'd have a broader range?

I don't remember what BB-8's range is, but I think it uses a decent amount of the ADC spectrum - I'm using a headphone output from my phone, which is adjustable loudness.