<p>My first guess is that the duty cycle of your clock input is way below 50%, or out of the voltage range that the drone lab is designed for. If you have an oscilliscope, try and hook up the clock output for your bass synth, and see what the waveform looks like. We've been talking about different methods for changing pulse-style clock inputs so that they become 50% duty cycle square waves (like the LFO from the CD40106 that drives the Drone Lab's clock), but haven't quite figured it out yet. More info on this as it develops.
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