Cirtcele built a synth sequencer module using a dekatron vacuum tube display –
The clock circuit includes a relay which clacks away somewhat charmingly. The relay noise does not get into the sound path of the synth, it is just the noise the synth makes whilst operating. Sound is recorded over the camera’s microphone so you all can enjoy 60 seconds of clack clack clack clack clack.
And in case that weren’t enough tube-goodness for ya – the synth it’s sequencing is tube based as well.
Dekatron timer brings vintage tube tech to the kitchen