R1Gslew: gate activated slew limiter PCB/panel, kludgy/cheap

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falafelbiels
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R1Gslew: gate activated slew limiter PCB/panel, kludgy/cheap

Post by falafelbiels »

Okay there is a thread already where this one is menttioned, but it is a very messy one, so I will start all over right here.

I have designed a PCB for a gate activated slew limiter.
What it does is limit the speed of transition from one CV value to the next, in other words: it makes slides in your note sequences.

the slew limiter is active when the ilumminated tact switch is lit and the speed is set with the potentiometer. The slew limiter can be acivated manually with that tact switch, or externally by inserting a gate/ trigger signal in the connector labelled EXT. The toggle switch next to the EXT input determines the mode of external activation. when set to FF it activates the slew limiter on reception of a gate/ trigger signal. when set to G it activates the slew limiter for as long as there is a gate present at the EXT input. gated mode is nice to use with sequencers that have active step outputs.
The R1Gslew also has a buffered output for passing on the input to more oscillators (or more R1Gslews)

I reckon this one goes very nicely with any Baby-8/10 variant or an expanded Turing Machine or what not...
(yeah I need to expand my Turing Machine)

Look at him go:

[video][/video]

Aaaah me so clumsy!


So the thing looks like this when finished:

Image

Image

see the kludges? that is why they go cheaply for now. I will order revised boards shortly for those who don't want to kludge, but these wiil be less cheap.

kludge one is necessary to feed power to the cd4052 which is the IC near the potentiometer. Solder a resistor clipping from pin 14 of the HEF4013 or the pad of the Bp cap closest to that Pin 14, to pin 16 of the CD4052 or the pad of the Bp cap closest to that pin 16.

kludge two is makes the thing work nicer in gated mode. It will reset the active flipflop on reception of a gate signal. It also involves the cutting of a trace, which I have already done for you Solder a resistor clipping from pin 4 of the HEF4013 to the anode of the middle one of the three diodes left of it, or to the left pad of the pd resistor left of HEF4013.


as you can see the parts count is pretty low and there are no weird or hard to find parts. The BOM includes links to some specific parts.


I'd hereby offer these boards/ panels to people who would like to have a go at it. I have plenty of slew limiters for my own system for n
I am selling these PCBs for €5,- each, panels for €5,- too, shipping is €3,- worldwide (all ex VAT).

A BOM will be posted here later today, okay?



So who's in?

:animal:

#########################################

These guys are:

Float32 x1
Flab x2
Mush x2
Sixty_n x2 + spaeterneisa x1
Mattfearsatan x1
Babagnohm x2 + Sizzla x1
Loderblast x1
Setsun8 x1
Attachments
R1Gslew BOM.pdf
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Last edited by falafelbiels on Wed Sep 16, 2015 4:22 pm, edited 10 times in total.
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float32
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Post by float32 »

That panel is beautiful! I'm down for a pcb and panel.
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falafelbiels
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Post by falafelbiels »

float32

Thank you, you are down indeed!
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flab
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Post by flab »

me please , two pcbs-
but no panel this time, if that is possible-
i am planning to cut one that will fit two :goo:
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mush
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Post by mush »

I'd like 2 pcb's no panel. But I wonder what else you have in stock, maybe I'll make a bigger order...
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Post by flab »

^ i want to know that as well
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Post by sixty_n »

two pcbs & two panels for me please
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Post by mattfearsatan »

Hi there,
A PCB and a panel, please?
Anyone in the UK going to make an order of the push switch? I'm happy to buy a few and distribute to save on postage.
Matt
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falafelbiels
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Post by falafelbiels »

Cool cool cool

What else have I got coming up? Well the Corny Rhythm is good to go, a "preset" rhythm sequencer inspired by the Roland CR8000 with built in conga (Tumbadora).
I need to compose a bit of build info for this.

Image

I also have some boards for Sizzla, a 4hp hihat and cymbal module, based on the CR8000 again. It looks like Tumbadora.
Some component values need to be changed on the silkscreen and the open hihat has a bit of an irritating thump. Hope I can work this out.
This one also needs some build info to go along.

Image

And then I have a bunch of Spaeterneisa sets in stock too.
You know, the funny little 4hp 4stage clock divider/ pattern maker.

Image

Couple of Clawbells are here as well.

Image

Plenty of Tumbadora sets here...

Image




In other news, I got in the results of my first experiment in FR-4 frontpanel design today. The solder resist layer makes it a bit on the vague side and one hole needs a little bit of widening, which I can do.

Image

These can go for €5,- as well.
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SLEW!!!

Post by babagnohm »

Yo Mr Mr.

I would love to take a couple of the slews and maybe one of the sizzlas for
now :D

Kalle

:nana: :nana: :nana:
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falafelbiels
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Post by falafelbiels »

Sure.
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Post by flab »

can I have a h-corny as well please together with my slews ? i will order a sizzla in the future when will be set
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mush
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Post by mush »

A clock-divider PCB and two slew PCBs then. Will you send me an PM with payment info?
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Post by sammy123 »

I'd like to grab a sizzla and that Corny Rythym if it is available.
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Post by setsun8 »

I'm in for 1x slew pcb with wood panel.

Should the pot be log/lin response?

Thanks.
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falafelbiels
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Post by falafelbiels »

Okay guys, super busy right now preparing for the SDIY convention in Tilburg.

After the weekend I will get back to you about this.

Oh the pot on the R1Gslew is a 1M linear...
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Post by setsun8 »

Thanks falafelbiels
Looking forward to it!
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falafelbiels
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Post by falafelbiels »

sammy123 wrote:I'd like to grab a sizzla and that Corny Rythym if it is available.
Be ready for an announcement on these as I am kind of still working on these...
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Post by sammy123 »

falafelbiels wrote:
sammy123 wrote:I'd like to grab a sizzla and that Corny Rythym if it is available.
Be ready for an announcement on these as I am kind of still working on these...
Cool. Thanks!
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falafelbiels
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Post by falafelbiels »

sending out those info requests today....
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Post by search64 »

Interested in the corny rhythm 8-)
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falafelbiels
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Post by falafelbiels »

well check it out.....


klik
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falafelbiels
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Post by falafelbiels »

All sent out....

thanks guys!

Plenty of boards left still
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Post by $XxxxX$ »

falafelbiels wrote: Plenty of boards left still
You still have boards and panels left?
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falafelbiels
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Post by falafelbiels »

I'm out of the cheapies, but I still have the expensive good ones. They go for €10,- for the PCB, €5,- for the panel.
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