I don't know how many of you follow Sam from the Look Mum No Computer YouTube channel, but he recently put up a video taking you through the breadboarding of a fairly simple 2 oscillator analogue synth.
I found this really interesting and may well end up making something like this.  I'll be interested in the follow up videos where he plans a delay and a sequencer circuit - And hopefully we'll see it go from breadboard to PCB
It is quite long at an hour and 20 minutes, but I think it's well worth it.
Link Here
			
			
									
						
						Simple DIY Synth
Simple DIY Synth
Re: Simple DIY Synth
That filter does sound good!  
			
			
									
						
						- 				Martin Walker				        
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Re: Simple DIY Synth
It really does!
In fact for a simple sawtooth only and with a really stripped down VCA with just a release control, I thought the whole thing sounded great!
I’ve just been reading up on the Curtis VCO chip and it looks pretty trivial to add a square wave output with a pulse width control.
For people who don’t want to commit an hour and 20 minutes, Sam has put chapter markers in the description.
- 				Martin Walker				        
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Re: Simple DIY Synth
As part of my therapy, when I was recovering from being mental, I was sent to a community centre, where a guy got us to make a one oscillator mono-synth in a day, and then we had to take part in a concert with all the other "patients" when we all finished it, but this was Camden, and it was supposed to teach us how to be creative. All I can remember is pushing a resistor through the board straight into my thumb, and bleeding profusely.
			
			
									
						
						Gristleize!
		Re: Simple DIY Synth
My son is designing and building his own modular synth and we've taken some of our inspiration from the Noise Toaster
http://musicfromouterspace.com/analogsy ... OASTER.php
I've no idea how that one sounds but it is a good starting point for our own ideas.
			
			
									
						
						http://musicfromouterspace.com/analogsy ... OASTER.php
I've no idea how that one sounds but it is a good starting point for our own ideas.
- 				James Perrett				        
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JRP Music - Audio Mastering and Restoration. JRP Music Facebook Page
		Re: Simple DIY Synth
Interesting design, although I'd question the use of a transistor as a noise source. Back in the day I got better results from a Zener diode. Oh, and  a  true Zener effect diode has to be less than 5V otherwise it's an avalanche diode with a poorer noise performance.
P.S. experiment with the resistor value for 'best' noise
			
			
									
						
						P.S. experiment with the resistor value for 'best' noise
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Seemingly no longer an 'elderly'.
Now a 'Senior'. Is that promotion?
		Now a 'Senior'. Is that promotion?
Re: Simple DIY Synth
James Perrett wrote: ↑Wed Aug 16, 2023 2:55 pm My son is designing and building his own modular synth and we've taken some of our inspiration from the Noise Toaster
http://musicfromouterspace.com/analogsy ... OASTER.php
I've no idea how that one sounds but it is a good starting point for our own ideas.
Looks cool, sweepable oscillator, looping EG, cool.
Gristleize!