Super Weird Analog Electronic Metronome? EveryDay Electronics July 1976 

*bump*

Definitely. That was what I thought was going to happen, entertaining though the video was, a build, on proper stripboard would be great.

This is a very interesting way to do frequency division. we're so used to everything being based on binary divider chips that divide by 2, 4, 8, 16 and so on, but this thing can divide by odd ratios - the first thing that popped into my head was whether this could be used as the basis of a sub-oscillator for a synth vco... You wouldn't need the rotary switch as you could just have a single pot on the panel in place of one of the trimmers, and you could continuously vary the division ratio - with two or three of these suitably tuned you might be able to play chords on a monosynth, or just really fatten up the sounds a bunch. Until now I'd always implemented sub-oscillators by using the same method used in the Roland SH101 - ie. feeding a squarewave from the vco into a 4013 dual flipflop chip which gives two outputs at -1 octaves and -2 octaves below the vco pitch, then combining these with diode mixing which gives a simple staircase waveform which gives the filter something more than just a pulse wave to chew on. Not sure how much legs this analog divider concept would have in this application but I'm SO tempted to build something like this into a module and see what it can do...

cool! I have been moving away from everyday electronics haha, I have a couple of funky plans for this year revolving around some old projects in these mags! electronics today is pretty neat!!!

Because the entire circuit (minus the speaker and switches) could be built for the cost of a CD4017. Back in those days, it was all about price and minimalism.

the CD4017 was either not out yet, or way too expensive or rare for this kind of a hobby project. These "simple" ICs were the high tech components of the day, like complete SoCs are today.