The Liquid Hihat - NEW VIDEO-Dec.1508

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

For quite some time I had been wishing for a hi-hat sound in which I were able to change it's pitch as well as other aspects of it's sound. Reading through copies of the old Synapse magazine on a site last year, I found the Voltage Controlled Clock circuit.

It occurred to me that in combining a couple of those circuits with the circuit that produces metallic sounds, found in Ken Stone's Cynare Drum Simulator circuit, I could possibly have, exactly what I wanted.

Here, is the schematic for that:

March 0509 - sorry. I've removed it to give myself BACK more upload space. Sad

If you're looking for it, email me and I can send it to you.

The only minor trouble that I have had with this circuit, is the External Input (for Noise or anything else that you'd like to put into it). I should have added an attenuator for this input as well. Neither of my 2 white noise sources in my modular, have their own output attenuators and have amplitudes of 10vpp. They are a fair bit louder than the shimmering effect produced by the Synapse CD4046 VCOs / Ken Stone CD40106 Shimmer combinations.

Outside of that this circuit works wonderfully with an incredibly wide range of sound possibilities.

EDIT: Please note! The following PCB layout is NOT IN REVERSE. This is seen top down as the actual PCB IS layed out. I don't drill through my PCBs. I do everything in Bernie Hutchins' "poor man's surface mount". Wink

March 0509 - removed, to give me back upload space.

If you've any questions just fire them off and I'll answer them to the best of me abilities. Smile

Just in case - the slightly larger full version of the scan is available here:
http://www.damian.deathlehem.com/schematic/TheLiquidHihat-PCB-July1708.jpg

creatorlars · Posted: Thu Jul 17, 2008 8:42 am Post subject:

Awesome! With a layout, I will probably build this.

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

fonik · Posted: Thu Jul 17, 2008 3:01 pm Post subject:

this subforum seems to become a treasure chest? great.

Uncle Krunkus · Posted: Thu Jul 17, 2008 4:45 pm Post subject:

So Rykhaard,
Would you mind if I did an ExpressPCB layout of this one?
It would mean I'd be able to re-post it as a standard (parts and copper on opposite sides) layout. And also that I'd be able to post the .pcb file should anyone want to order boards from ExpressPCB. We'd also be able to put it up as a candidate for a large run to be sold through the EM store.

BTW, what did you lay the schematic out with? If it was the ExpressPCB schematic editor, it would speed up the PCB heaps, as I could link them for net checking etc.

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Uncle Krunkus · Posted: Thu Jul 17, 2008 9:49 pm Post subject:

Okay, it's a deal.
You download the ExpressPCB program and start transcribing the schem into that, and I'll start on the .pcb
Give me a few days to get started, as I've just finished winding my new pickup, and I'd like to test it out first.
Once we've got the two of them close to done, we'll see how they link and sort out any discrepancies. I'll do .1" pitch connectors for everything yeah? (on the board you can always put in pins, or just wire directly, I just think it's a good standard to follow) I'll also do the optional power connector like I did on the MPS. (although I realise only 3 people have actually seen that board so far! Rolling Eyes

)

Like I said before, I actually find it quite relaxing, so I'm happy to do it. Very Happy

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

These are 2 very simple samples of the Liquid Hihat being played with standard 8th notes. There's a little bit of modulation in both of them. Nothing radical. I'll make some new samples of the module soon, to give a better idea of some of it's capaibilities in audio. Smile

http://www.damian.deathlehem.com/resources/TheLiquidHihat-1-Oct1707.mp3

http://www.damian.deathlehem.com/resources/TheLiquidHihat-2-Oct1707.mp3

And here's a video that I have up on my webpage that gives more of an idea of some of the sound possibilities from it. Smile

neandrewthal · Joined: May 11, 2007 Posts: 672 Location: Canada

I'd love a liquid hi-hat too.

I was planning on building a perc synth out of 4 THMPS, but I realized I would be using two of them for the open and closed hi-hats(that's 36 knobs Shocked

) when I could just use this instead Very Happy

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

RF · Posted: Sat Jul 19, 2008 10:26 am Post subject:

So ummmm..Rych,
If we got a layout from Uncle K I'll bet there would be group buy possibilities. I'd sure like a couple of those circuits in my kit.

bruce

fonik · Posted: Sat Jul 19, 2008 1:18 pm Post subject:

definetely.
i am thinking of an analogue drummachine for a year now. the liquid HH would be in!

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Uncle Krunkus · Posted: Sat Jul 19, 2008 11:37 pm Post subject:

These so called "Master Dividers" of which you speak, obtainable they are?
Schematic on Ken's page it is?
Shocked

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Uncle Krunkus · Posted: Thu Jul 31, 2008 4:29 am Post subject:

Okay,
I've modified Rykhaard's schem to make it a bit easier to layout the PCB, and the layout is well under way. Let me know if anyone would like to check over the new schem.
I'm trying to lay it out as a one sided PCB, so it will be easily transferred for home etching. Man! It's a whole different ball game! I feel like someone swapped the Quickie for the Cryptic on me! Very challenging. I like a bit of a challenge. Very Happy

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Uncle Krunkus · Posted: Thu Jul 31, 2008 3:33 pm Post subject:

Here it is,
I consolidated the bypass caps to a "power strip" and added a couple of 10uFs/22R to further keep things clean, a bit like Ken/Fonik do.
I added label tabs to all "off board" connections which will make checking the netlist easier.
Then I re-numbered all the designators left->right/top->bottom. This helps with the layout, and with the building.

Updated this schem 3-8-08

LHH-schem-3-8-08.gif

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Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Great amounts of thankyous for doing the restructuring of the schematic, Uncle Krunkus!! Very Happy

The whole thing looks great! It's provided me with a couple of methods that I hadn't even thought of myself, even though I've seen them done (labelling) in Ray's schematics. I'll be adopting that myself as well! Smile

The only change to be made is the "Range 4" label, on the 2nd CD4046. The Range controls for each of the 2 of them, are for setting the frequency range that each of the VCOs will operate within. Appropriately: Range 1 and Range 2.

Otherwise - excellent! Very Happy

Uncle Krunkus · Posted: Fri Aug 01, 2008 3:40 pm Post subject:

Yeah I wasn't too sure about how to name the "sections", so I did 1,2,3 for the Oscillators across the top, and 4,5,6 for the ones underneath, and that meant it became the "range" for oscillator 4.
I think I should have left it alone! Rolling Eyes

I'll go back to the way you had it (VC on Oscs 1&2 + 3,4,5,6) and re-post the .gif.
I also forgot to send you the .sch so I'll do that too.

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada

Thanks muchlee again Uncle Krunkus!! Smile

No worry in sending the gif directly to me. I can just copy / paste / save from the forum, for it. Smile

Once I'm back and have my G.I.M.P.-S.E. completed, I'll be posting a far larger set of samples of the Liquid Hihat to give all a greater idea of some of it's capabilities. Smile

loss1234 · Posted: Sat Aug 16, 2008 10:40 am Post subject:

hey there

this is exciting. PNP of this would be great!

also. what are we going to have to install in addition to this to fix the attenuator issue you speak of? is that really just going to be an opamp BEFORE the input to reduce the volume? (like a mixer or volume control?)

or even just a voltage divider?

thanks

Rykhaard · Joined: Sep 02, 2007 Posts: 1290 Location: Canada