I haven't tried voltage control, since it would be tricky to get it to be 1v per octave, so I went the easier route with the resistance. I keep things pretty simple, but Moritz Klein has some more advanced diy synths that can do 1v per octave. Maybe I'll try a variable power source and see how that affects things for the fun of it and let ya know.
@@observerb ...and I finally finished it (had to find some parts) Thank you, awesome learning experience. Do you have an insta account? I posted the end result there
Awesoooome. I always wonder about all the little bleepy bloop machines that have come into existence because of these vids haha. I would love to see it! Pop a link to it here and I'll check it out.
Yes! I'm going to make a vid on that soon, I do it with different chips, but same concept. Also about to drop a vid about making these a bit more modular, should be done by the end of the month.
I love these simple projects, the 40106 is very simple to use as squarewave oscillator with potentiometers for frequency and volume control. I try to solder the oscillator with sync project on a normal prototype pcb but keep running into problems, it's hard to connect the pins in a neat way but it's getting there. And I ordered a stack of veroboard pcb where all the holes are connected in rows similar to the breadboard setup. But it feels like cheating 😕 Does anyone have some tips maybe, I keep a 2 or 3 hole space between wires and pins and then connect them with a piece of bare wire. Connecting to the plus and minus doesn't work this way though... But Observer B is a great help. Moritz Klein is really good too BTW but they are much more involved projects and these simple circuits are easy to understand and mess around with before building a bigger stuff. IC's easily burn out from simple mistakes and even though they are cheap it sucks.
Thanks for the kind words! When going to perfboard, I use chip sockets, it makes it easy to swap a chip if one burns out. I use a drill to to break the connections on the board, like in the middle of a chip, making sure there is no copper on those spots, but not drilling all the way through the board. I've had problems befire with "cold solder joints" where all of the connections look good, but aren't actually connected. Try re-flowing all of the joints, it has fixed synths for me that weren't working or had stopped working. Good luck!
So far nothing more than messy ones in my notebook, I've been wanting to make a full fledged vid on this for a while. It's on the list! It's based on a 4016 multiplex and 4017 decade counter if you want to check those out. 4016 chips aren't typical for this, but I got them by accident when trying to get 40106 chips haha. They get the job done. A Baby 8 sequencer is very similar if you want to check out schematics for that, there are tons since it's a popular basic diy sequencer.
1:50 Is it common with these type of plugs, that the metal prongs are exposed while carrying voltage? Something like this is strictly forbidden here, because thats a death trap
Excellent walk through! Some new things learned. Special thanks because your point about grounding output jacks pointed me to relook at a problem in a circuit I have done several reworks of. In the end grounding just fixed it! Thank you and I have subscribed!
Check out my LFO filter vid, you could use the vactrol to control an oscillator's pitch instead of the filter. Might take some fine tuning, but it could work!
Eine sehr detaillierte Anleitung👍 Da möchte man glatt mitmachen, wenn auch laienhaft. Der Link funktioniert nicht, deshalb: welche Bauteile benötige ich (Liste)? Wo wird der Audioanschluss gesteckt?(- im Video nicht eindeutig erkennbar) und kann ich den Ausgang ans Audio- Interface anschließen?
Uh oh! Probably an unwanted connection or a bad potentiometer. If it makes you feel better, I have a pile of failed builds that's much larger than my successes. If you have it on a breadboard, you can at least tear it apart and try again. If it's soldered, might have to salvage the parts you can and give it another shot. Good luck!
This video is great! Thanks! I just put this together but I used three Schmidt's to make LFOs and Three to make the synth voices, Really wide range of sounds you can get out of it and I really like having the fine tuning control.
That's really good! I'd like to see some of the addons, such as the sync, or maybe a second LDR to control duty cycle. Some demos with an envelope to hear what it would sound like as an instrument would be great.
You're welcome! You can't run them directly to the same output, but can make a very simple "resistive mixer" using anywhere from 30k to 47k resistors at the output of each before combining them, it will cause a volume loss, tho, but it's not a big deal sonce these signals are pretty hot anyway. A potentiometer in addition to those resistors will allow you to blend them. Check out experiment 7 on this site to see a schematic beavisaudio.com/projects/cmossynthesizers/
Yeah, no problem! Kicking myself for not putting it in the vid. It's on my website with some additional projects for the 40106 chip here: sites.google.com/view/observerb/education/electronics/40106-oscillator-with-sync?authuser=0
@@observerb your website instructions are so easy to follow. You have made them for both the experienced and inexperienced. I can’t wait to order and build!
Oh it's dirty af! This was before I learned how much a large capacitor in between the + and ground rails helped with the sound. The grittyness has it's charm but it doesn't stay in tune as well without the cap.
Nice im building a project where everthings going to be controled via vactrol or electro mechanical means! Still in the planning phase if i end up building it ill send ya some clips
I'm wondering if you could replace the ldr and led that you taped together with say a PC817 Optocoupler or would it require some extra components? Thanks for your videos!
