This is another non-audio project, but still a soundproject. Intended as a noisebox for my grandson I have equipped it with a ten-step sequenzer based on CMOS CD4017 counter/decoder and the famous sound-IC SN76477.

The soundchip is attached to switches and potentiometers in a way that gives the best opportunities to fiddle with the various sounds and noises. Remember I had built a simpler box for the kids long time ago effective but I hope this one will be more amusing.

The chip is out of production, but samples can be found on eBay and on AliExpress, from where I got 10 fresh chips (??) but in an impossible housing with shorter distance between the pins.




SN76477 DATA