Electric Druid One-Shot event generator

[mybud]

Build Rating

5.00 star(s)

I made this permanent breadboard version of the abovementioned and housed it just now. Because I kept the components and pots facing upwards, the gut shot is not particularly interesting, as you see:



I made a little mod by wiring an LED to show what it does when you change the waveform, delay, echo duration, number of repeats, and so on. It runs off a single 9V power supply at the back, very convenient for us pedal builders, I think.



It's housed in a matte dark grey 125B landscape enclosure from our friends in Thailand. The green switch initiates a one-off event at will or you can trigger it with a gate signal (sockets at the back). I'll use it to trigger complex sampled percussion events and other general mayhem.

Thanks for reading as ever and wishing you every success with your forthcoming builds.

 

[knarf]

Hi
Could you share the breadboard layout if you have it drawn up somewhere ?

 

[mybud]

Hi
Could you share the breadboard layout if you have it drawn up somewhere ?

Here’s a pic of the original layout. I’m pretty sure there are simpler ways of doing this but it worked for me.

One thing to be aware of: I had to insulate the original metal jacks from the enclosure after housing it. Seems like this circuit doesn’t want to be grounded metal to metal. Simple solution is to use insulated jacks (IOW, plastic or anything where the jack ground isn’t connected by default). Or house it in a plastic box if you prefer.

You may also prefer installing the pots on the other side of the board. Normally, one sees the components facing up as you look into the box from the underside. Maybe easier to troubleshoot if you run into problems later.

Let us know how you get on and best wishes for your build.

 

[Nocentelli]

Hello, i've just ordered one of these chips - can i ask what circuit are you using to generate the gate signal? can i also ask if you're using a pot or 8-way switch to select the waveform?

 

[mybud]

I’m using an Erica Drum Sequencer to generate the gate signal. Have a look at Moritz Klein’s various designs there for various options. You could also use an SQ-1 which has adjustable gate lengths but there are actually many options for doing this.

And yes, I’m using a pot which is less precise than a switch but fine for my purposes. For this, have a look at the Electric Druid site. There is a way to adapt the pot to a switch using series resistors which would provide finer control.

If in doubt, contact Tom directly. He’s very helpful and will respond to your query with clear advice. Good luck with your project.