this is awesome. I was looking to do a similar project and this is the closest thing to what I am trying to do that I have found so far. your project clear cut and well presented. ty for sharing!!
What is wrong with people? Folks, this project took a long time to build and then to tune. Instead of saying, oh, why don’t you do it this way or that way, you should recognize good effort and say, *GREAT JOB!* and give this video a Like - show some appreciation. If you think it could or should be done differently, don’t say anything - just build it yourself! I like what you did here! It looks fun to play! 👍🏻 well done! 😊
This looks like the beginning of an awesome project! I remember a few years back seeing a schematic for synth which used twelve 555 timers as a master oscillators and 4040 counters to divide them down into successive octaves. The 555 is well suited for use in organs and synths. 👏👏👏👏👏👍😍
They were scattered around in many instruments. Elka used them as counter interrupt generators (or whatever it's called) in some of their drum machines.
Sorry sir, permission to ask, if you want the LED to turn on for 1 second and turn off for 5 seconds and you can adjust it to turn on for 5 seconds and turn off for 1 second. 1 second is also 1 second. Only the frequency can be set... please advise. Thank you
100 555s may be enough for some polyphonic synth? Also I've read that it's way better to use 7555 chips. They're less power hungry and thus are not getting hot so easy (like NE555). Somehow this "rough" sound of a monosynth is unique. The timbre sounds live.
@@organfairy why not a "card based" synth? It's just need a poly CV (from MIDI) controller. The schematics exists and I've seen some projects (probably open).
I am turning the knob marked "Pulse Width" in the schematic (at 2:36). It's a pseudo-PWM but it cannot be modulated over a very big range. The main reason I made the mono-stable flip-flop was that I needed pulses that would always end on a low state to drive the gate circuit that is used to drive the vibrato delay (and the envelope generator I make in part 2).
I use the 100nF and 10kohm resistor to turn the squarewave from the first NE555 into short pulses that trigs the second NE555. If I used the squarewaves directly the 'pulse out' would be almost the same as 'square out'. However, because the 10kohm resistor is tied to VCC the pulses will also go above VCC level, and according to the datasheet for NE555 it is recommended not to go above VCC for the inputs. The diode prevents the pulse from going more than a little over VCC. It might work without the diode but in general I prefer to do what the datasheets recommends.
I am not much of a keytar player. For some reason I find it hard to play in that position. I have, however, thought about a wind synthesizer - one you blow in like a clarinet or saxophone.
@@joshuamillerknight7530 I did actually make a somewhat similar instrument based on an old transistor design from the 1970s ua-cam.com/video/Af7V4kakgv8/v-deo.html&ab_channel=organfairy
Wow one of the best implementation of a 555 for organ. Also i like the background music.
lovely song
this is awesome. I was looking to do a similar project and this is the closest thing to what I am trying to do that I have found so far. your project clear cut and well presented. ty for sharing!!
What is wrong with people? Folks, this project took a long time to build and then to tune. Instead of saying, oh, why don’t you do it this way or that way, you should recognize good effort and say, *GREAT JOB!* and give this video a Like - show some appreciation.
If you think it could or should be done differently, don’t say anything - just build it yourself!
I like what you did here! It looks fun to play! 👍🏻 well done! 😊
Thanks - and nice sequencers by the way 🙂
This looks like the beginning of an awesome project! I remember a few years back seeing a schematic for synth which used twelve 555 timers as a master oscillators and 4040 counters to divide them down into successive octaves. The 555 is well suited for use in organs and synths. 👏👏👏👏👏👍😍
I have consumed the great and sacred fungus... and the music in this video really set a vibe
Was not expecting it... but truly fantastic decision.
Fun song
Ha, the second video I ever posted, 14 years ago, was of a simple 555 noisemaker I made. Good times!
I have made a couple of those too, but this one will end up using nine of them in total...
wonderful🕸
Nice work
Exited for this series! Nice job!
I think the roland jupiter 4 uses a 555 at the core of its vco iirc.
They were scattered around in many instruments. Elka used them as counter interrupt generators (or whatever it's called) in some of their drum machines.
Yes you are correct. If I remember correctly the 555 clocks the integrator to generate the sawtooth
Hah, I also still have a big collection of NE555 chips and this actually doesn't sound half bad!
so cool!
Sorry sir, permission to ask, if you want the LED to turn on for 1 second and turn off for 5 seconds and you can adjust it to turn on for 5 seconds and turn off for 1 second. 1 second is also 1 second. Only the frequency can be set... please advise. Thank you
Great !
Did you parallel the resistors for the keys for exact resistance or to let the resistors handle more watts?
For the exact resistance.
100 555s may be enough for some polyphonic synth?
Also I've read that it's way better to use 7555 chips. They're less power hungry and thus are not getting hot so easy (like NE555).
Somehow this "rough" sound of a monosynth is unique. The timbre sounds live.
I have thought about making a stringmachineish instrument. There is a frequency divider application for the 555 that I would like to explore.
@@organfairy why not a "card based" synth? It's just need a poly CV (from MIDI) controller. The schematics exists and I've seen some projects (probably open).
Im on it!! They work very well for divide down synths.
Card based?
@@organfairy a voice card :)
Cool
Excellent. Even I could make this! 🙂 What are you doing at 4:48 min? Is that true PWM or a mix of both outputs?
I am turning the knob marked "Pulse Width" in the schematic (at 2:36). It's a pseudo-PWM but it cannot be modulated over a very big range. The main reason I made the mono-stable flip-flop was that I needed pulses that would always end on a low state to drive the gate circuit that is used to drive the vibrato delay (and the envelope generator I make in part 2).
Amazing. In your schematic, what is that diode connected to pin 2 of the second 555? Is it just a LED?
I use the 100nF and 10kohm resistor to turn the squarewave from the first NE555 into short pulses that trigs the second NE555. If I used the squarewaves directly the 'pulse out' would be almost the same as 'square out'. However, because the 10kohm resistor is tied to VCC the pulses will also go above VCC level, and according to the datasheet for NE555 it is recommended not to go above VCC for the inputs. The diode prevents the pulse from going more than a little over VCC. It might work without the diode but in general I prefer to do what the datasheets recommends.
@@organfairy Oh that makes sense! I appreciate the explanation. Do you recall which diode you used? I’d like to build your circuit!
@@seanpatrick1062 I used an ordinary 1N4148 but most diodes will do.
@@organfairy Perfect, thank you.
Super
neat 😀
song name?
It would be fun if you tried making a keytar out of a keyboard from a scrapped organ!
I am not much of a keytar player. For some reason I find it hard to play in that position. I have, however, thought about a wind synthesizer - one you blow in like a clarinet or saxophone.
@@organfairy That would be interesting!
How add midi?
I think that will be difficult. I doesn't comply to the V/octave standard - or any other standards for that matter.
Not polyphonic?
No
@@organfairy I wanna know how you'd make one with transistors. that'd be really cool
@@joshuamillerknight7530 I did actually make a somewhat similar instrument based on an old transistor design from the 1970s ua-cam.com/video/Af7V4kakgv8/v-deo.html&ab_channel=organfairy
I wish I had a scope. Goddamn
They are quite cheap if you buy it as a kit. I tried building one and it's pretty OK if you only need one channel.
@@organfairy I went to electro school. And i just wish I had one of those big sturdy ones that we used in school.
What???
Awesome !!