M185 sequencer Project - NEW PCB VERSION

ryktnk · Last edited by ryktnk on Thu Sep 17, 2020 12:26 pm; edited 19 times in total

Hello Forum !

[my first proper post !]

I have been making some new Roland 100m Modules, as they
have been discontinued for a while !

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Here is a link to a new sequencer I have been working on
http://www.flickr.com/photos/ryktnk/sets/72157604609909924/

and a video !
http://www.youtube.com/watch?v=vK1PoQffhjk

It has step repeat switches:- [1-8] and gate mode switches:-
[off/single/repeat/long] for each stage, plus random & pingpong mode.

It is based around a PIC, so is software update-able.

I am thinking of making a run of boards for the controller PCB
if anyone is interested . . . ?

-ryktnk

Floppy · Posted: Sat Jun 21, 2008 4:02 am Post subject:

hey i saw this youtube video already and i thought it would be the original roland sequencer Smile

i would take a pcb for sure.
great work ryktnk.

Usine Karate · Joined: Jun 09, 2007 Posts: 64 Location: Hackney Wick

i too would be interested for sure.

Joel · Joined: Sep 12, 2006 Posts: 97 Location: London, UK

yep me too, that looks awesome!!

asafnetzer · Joined: Jun 16, 2007 Posts: 112 Location: Israel

Looks and sounds amazing, I just love the way you mounted all the components on the pcb.
Would be in for one for sure maybe two, does it all fit on one pcb ? upper side for hardware, lower for components ?

Asaf

StephenGiles · Joined: Apr 17, 2006 Posts: 507 Location: England

Ever thought of controlling a flanger or a phaser say with a normal LFO up to a certain point in the sweep, and then have a sequencer kick in to make it cough and splutter to the top, and if it has thru zero capability, over the other side and back, when the LFO takes over??

Peake · Posted: Sat Jun 21, 2008 11:01 am Post subject:

That is superb stuff! I'd love to have one or two in Moog format...

ryktnk · Posted: Sat Jun 21, 2008 11:23 am Post subject:

Hello

Thanks for the comments.

I am thinking of producing the main pcb.
[see attached photo of prototype]
This has all the logic circuity for the sequencer plus clock
and portamento etc.

The large panel on the with the panel components, will not
be too useful as it is formated for Roland 100m
modules, and contains a few obscure components.

So to make it work you will have to hand wire all the
pots, leds, switches etc.

-ryktnk

185MainPCB_proto.jpg

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bubblechamber · Posted: Sat Jun 21, 2008 12:01 pm Post subject:

i'd buy 2 of these
David

toppobrillo · Posted: Sat Jun 21, 2008 3:35 pm Post subject:

beautiful stuff! who does your panels?

blue hell · Posted: Sat Jun 21, 2008 4:01 pm Post subject:

Danno Gee Ray · Joined: Sep 25, 2005 Posts: 1351 Location: Telford, PA USA

How much would a board and a programmed PIC cost?

Peake · Posted: Sat Jun 21, 2008 4:46 pm Post subject:

I'd certainly want a pair of controller boards and PICs, depending price-wise... Thank you for offering to make them available.

ryktnk · Posted: Sun Jun 22, 2008 3:25 am Post subject:

Hello

ringer · Joined: Feb 20, 2007 Posts: 49 Location: montreal

Hi Ryk,

I saw this on the System 100M forum I believe. Thanks for making the project available, great work. I would like 4 sets of boards and pics.

I would recommend you put the mounting holes at the corners and if you have enough space, you could put extra holes at 4 edge centers so it gives extra options just in case someone is space challenged via the flying leads or their front panel layout. Also helpful might be to put mta.100 headers for the wires a la EM Klee. This will be good a source for clocking The Em Klee.

Sorry for asking , but here goes. Any possibility of voltage controlled stage addressing?

Regards,
Ringer

endif · Joined: Jul 14, 2006 Posts: 138 Location: Reno, NV

Niiice.
I'm in for at least one if you do a run.

meic · Joined: Nov 12, 2005 Posts: 15 Location: Hamburg/Germany

I would take one!

Floppy · Posted: Sun Jun 22, 2008 8:43 am Post subject:

would it be possible to add note quantize via the software ?

janvanvolt · Joined: Nov 24, 2005 Posts: 285 Location: Mainz, Germany

I'll take two boards Smile

the_viirus · Joined: Jul 05, 2007 Posts: 3 Location: Step 6

consider one sold.

panele · Joined: Apr 13, 2008 Posts: 19 Location: mainz, germany

i would take one Very Happy

ryktnk · Posted: Sun Jun 22, 2008 1:53 pm Post subject:

Hello

Regarding the connectors, the 8way for the LEDs and Pots are 2.54mm
spacing so should work with MTA100 or similar kind of connector.
Screw holes, they will probably stay where they are, sorry.

Ringer:-

ringer · Joined: Feb 20, 2007 Posts: 49 Location: montreal

Quote

About the voltage controlled stage, mmm
That could be possible, but would require sacrificing another feature, which
would probably be the max-stage setting; as there are no more free inputs on the PIC, and adding another socket.
The stage change to a new stage would still be dependent on the clock
pulses and the amount of step repeats on the current stage, but would
jump to an arbitrary stage set by the CV, is this what you mean ?

Hi Rick,

Yes basically, you have an input jack that samples the incoming voltage and an ADC converts it to a binary number which sets the counter to the appropriate stage. Once the incoming voltage goes past a voltage threshold, the addressing follows the voltage at the input jack.

Most systems have 0 to 5 volts or 0 to 10 volts ranges, so an option to configure the input for both would be very useful. It is a powerful feature, maybe the random switch could be switched for this feature. You could then use noise to have the random effect or other types of voltages to control the sequencer.

Here is a pdf to explain it better,

http://www.buzzclick-music.com/Milton_owners.pdf

Hopefully, it is possible without sacrificing other features, thanks.

Regards,
Ringer

Tim Servo · Posted: Sun Jun 22, 2008 2:48 pm Post subject: New sequencer project

Absolutely awesome, I love it. Personally, I wouldn't change a thing. Okay, maybe add a "random" feature. Since the voltages are still analog, I'm assuming you're using the PIC to generate a binary count for an analog multiplexer (like a 4051). I have to ask, what was your inspiration for the per step features (mute, repeat, etc.)? I've been thinking of doing something similar, and I really like the way you've implemented it here.

Tim (has several random features) Servo

ryktnk · Posted: Sun Jun 22, 2008 3:38 pm Post subject:

Hello

Thanks. Tim

I was inspired by watching a Youtube clip of the excellent
YMO in the studio circa 1979, where they demonstrated
the Moog sequencer on their track Rydeen.
Which used the step repeat function.

I went to China last year, and found some pretty obscure
8way switches, so I thought this would be a good use for them.

8 pitch steps can, if used carefully, make
pretty good 4 bar bass lines, by changing the length between
notes, and repeating some notes.

I was too lazy to use a decoder, so the PIC outputs BCD, which
is quite a waste of IO pins, but it keeps the board size small [no decoder chips]
It does have a random step mode, if that's what you mean.

I keep wanting to add more features, but end up with having
to use "soft-selection" for modes, rather than nice big switches, which
is a shame . . .

-ryktnk