DIY Synth:004 - 8 step sequencer - VCO - LFO

Each channel of the sequencer is linked to a 250k pot to produce the CV. The CV is being fed to a VCO based on a LM324 - this produces a square and sawtooth wave. The output is fed to another LM324, this time acting as a VCA.

There's also a 555 acting as a rather nasty LFO, also fed into the VCA. I've buffered the LFO with a capacitor to stop the voltage spikes. I'm going to try out a sawtooth LFO next to soften the vibrato effect.

Category:

Science & Technology

Tags:

• LM324
• 555
• 4017
• 555 timer
• electronics
• circuit
• music
• noise
• DIY

[Soli9111]

rofl! great techno music machine! :D

[ByrneMatthew]

Glad you like it ;-)

[djlele16]

Very nice,I want do that!

can you post the schematic please?

[ByrneMatthew]

Hi there Dj LeLe,

I never drew up a schematic for this project, but it's a good idea and I will do it. I'll message you with a URL when I'm done.

Thanks a lot for the comment.

[JadeJustineTowse]

Very creative! Can't wait to see what it sounds like when it's all grown up and a proper synth haha :)

Good luck

[ByrneMatthew]

Thanks very much Jade.

Now all I need is some musical ability!

[noizetoyze]

Like it...

[rogercosseboom]

Hey this is great! I'm thinking about making my first seq/synth just like this, but based off a 40106 VCO. Can you message me the schematic?

Thanks!

[ByrneMatthew]

Thanks very much!

[bassman959]

that is great.