One in every of our favourite musical hackers, [Look Mum No Computer] is getting dangerously as regards to construction a pc. His quest used to be to create a singular drum device, impressed by means of a Soviet auto-dialer that used rope core reminiscence for quantity garage. Rope reminiscence is the read-only sibling to magnetic core reminiscence, the reminiscence generation used to construct some liked computer systems again within the 60s and early 70s. Rope core isn’t programmed by means of magnetizing the ceramic donuts, however by means of weaving a cord via them. And when [Look Mum] noticed the auto-dialer the use of the generation for a user-programmable interface, naturally, he simply needed to construct a synth sequencer.
The elemental generation is to observe the ferrite ring the use of a number one winding hooked up to a comparator. Then run the sign cord via one of the vital rings, and use a 555 to ship an oscillating sign via it. The person bits, AKA ferrite rings, pick out up the sign and cause the comparator. (The use of transformers as bits, what a laugh!) So for a running sequencer, each and every ferrite ring controls an software. Ring 1 is a kick drum, ring 2 is a snare, and many others. Then each and every cord is a unique step, and so they get powered sequentially. Twine the bit outputs in your tools, after which weave your beats. It’s already probably the most distinctive sequencer we’ve ever observed, however there’s extra.
Since he used actually giant ferrite cores, there used to be numerous room to take beat submissions from his neighborhood, so there’s 8 other beats “programmed” into this sequencer. And to change between them? Seems like [Look Mum] is the use of a step by step module from the outdated telephone device. Dial-a-beat!