rob_gould
Well-known member
I thought a few might get a kick out of seeing this, even though it is not the standard kind of project we have on here.
It is a Dub Siren (monophonic square wave synth based on two 555 chips for those that aren't aware) that I've built for a DJ friend. It's a super simple circuit that I breadboarded easily in a couple of hours. It is an extremely simple project by this forum's standard, but everything except the delay circuit is breadboarded which was an interesting challenge which I hadn't really taken on before...
I've taken the project a bit further than most - integral PSU as I hate wallwarts, delay included, relay bypass of the delay and I tacked a 4017 decade counter onto the clock output of one of the LM555s so that the LED circle around the big red button moves a step with every LFO cycle - cheesy but it actually looks pretty cool in the flesh. Everything's contained in a big aluminium Hammond case and thanks to Frank NRG for the engraving. I went for a touch and rugged finish as it is going to be taken out and gigged - the debut performance will be at Boomtown Fair, a little UK festival which is happening next weekend.
Pics :
It is a Dub Siren (monophonic square wave synth based on two 555 chips for those that aren't aware) that I've built for a DJ friend. It's a super simple circuit that I breadboarded easily in a couple of hours. It is an extremely simple project by this forum's standard, but everything except the delay circuit is breadboarded which was an interesting challenge which I hadn't really taken on before...
I've taken the project a bit further than most - integral PSU as I hate wallwarts, delay included, relay bypass of the delay and I tacked a 4017 decade counter onto the clock output of one of the LM555s so that the LED circle around the big red button moves a step with every LFO cycle - cheesy but it actually looks pretty cool in the flesh. Everything's contained in a big aluminium Hammond case and thanks to Frank NRG for the engraving. I went for a touch and rugged finish as it is going to be taken out and gigged - the debut performance will be at Boomtown Fair, a little UK festival which is happening next weekend.
Pics :
