M185 sequencer Project - NEW PCB VERSION

adambee7 · Joined: Apr 04, 2009 Posts: 420 Location: united kingdom

Hi Guys

Just need a confirmation for C6. I used this

http://uk.farnell.com/vishay-bc-components/bfc247076334/capacitor-0-33uf-63v/dp/1166040?Ntt=1166040

Should be alright? The footprint seems to be for something larger. Any help guys would be appreciated. Very Happy

magman · Joined: Feb 04, 2009 Posts: 363 Location: Liverpool, UK

You will struggle to get the cap from Farnell to fit, as it is only 5mm spacing.

I'll probably use one of these though:

http://www.rapidonline.com/Electronic-Components/Capacitors/Polyester/Metallised-polyester-capacitors/75175

Edit: was originally looking at the wrong cap. Embarassed

Regards

Magman

adambee7 · Joined: Apr 04, 2009 Posts: 420 Location: united kingdom

1 spread the legs flat and bend. The leads are quite long not like your normal metal box and it does fit. It's just is it the right one as in quality. Very Happy

The Bad Producer · Joined: Mar 08, 2009 Posts: 282 Location: The Manhole

I used 5% here - no problems noticed!

cold c · Joined: Dec 11, 2009 Posts: 1 Location: London, UK

If anyone wants to sell me their set of slide switches for this project, please PM me with details. (i.e. if you purchased an extra set of slide switches that you aren't going to use or if you changed your mind about the build etc)

Thanks!
Very Happy

adambee7 · Joined: Apr 04, 2009 Posts: 420 Location: united kingdom

It does fit.

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julian · Joined: Jan 11, 2008 Posts: 103 Location: UK

ryktnk · Posted: Fri Dec 18, 2009 2:41 am Post subject:

The Bad Producer · Joined: Mar 08, 2009 Posts: 282 Location: The Manhole

The panel I made up for rotary switches should easily transport to Eurorack (it is Frac at the mo) I could modify the design and pop it up here over the weekend... I think it would work out at 60HP...

Charlie

adambee7 · Joined: Apr 04, 2009 Posts: 420 Location: united kingdom

emdot_ambient · Joined: Nov 22, 2009 Posts: 667 Location: Frederick, MD

Just did a search for sp8t slide switches just out of curiosity.

Well, I found them....but Shocked

$8.16 apiece or $7.381 if you buy 10-49?

http://www.ttiinc.com/page/search_results.html?s=1144375414_11

Actually I found some Chinese ones cheaper but the minimum order was 5,000 pieces...probably not going to build quite that many Wink

[edit] Or--if you wannbe a bit wacky--you could use a SPST toggle switch in combination with a DP4T slider to access all 8 options. Wire it so that with the SPST in the low position you get 1 to 4 repeats, and in the upper position 5 to 8 repeats (higher position would be +4 repeats). Like I said, it's a wacky idea, but it would have the added advantage of allowing you to increase the repeats by 4 without having to cycle through the other positions...as if you can't do that fast enough with an 8T switch.

j.dilisio · Joined: May 19, 2009 Posts: 200 Location: baltimore

I can't tell from looking at the wiring schematic what order the gate modes connect to the switches.
p1 0
p2 I
p3 II
p4 I-
or
p4 0
p3 I
p2 II
p1 I-

The max stages switch and the stage count switches aren't labeled either so I'm guessing they go in order. p1=1, p2=2,..

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j.dilisio · Joined: May 19, 2009 Posts: 200 Location: baltimore

Nevermind,. it's the first one.
p1 0
p2 I
p3 II
p4 I-

j.dilisio · Joined: May 19, 2009 Posts: 200 Location: baltimore

Ok,. I've got the thing built and it works great except for the portamento.
I'm using v2.1 firmware and setting the steps in the extended mode with the reset button but it has no effect.

I've swapped out the 4066 ic and checked the wiring.
It's receiving 5v. Pins 1 and 2 range between 0 and 3v.
What should I check next?
Thanks,
J

EDIT: All fixed,. I had forgotten C13.

j.dilisio · Joined: May 19, 2009 Posts: 200 Location: baltimore

Here are photos of the finished sequencers..
Posted Image, might have been reduced in size. Click Image to view fullscreen.

The panel is hand cut, painted, and silk screened.
Posted Image, might have been reduced in size. Click Image to view fullscreen.

All is well except that the internal clock isn't working in one of them.
Any suggestions on where to start troubleshooting?

ryktnk · Posted: Sat Jan 02, 2010 5:11 am Post subject:

adambee7 · Joined: Apr 04, 2009 Posts: 420 Location: united kingdom

They look really good in white. Excellent stuff. Very Happy

emdot_ambient · Joined: Nov 22, 2009 Posts: 667 Location: Frederick, MD

Wow, those look really sexy! What's in-between the two?

Adam-V · Posted: Tue Jan 05, 2010 4:02 pm Post subject:

emdot_ambient · Joined: Nov 22, 2009 Posts: 667 Location: Frederick, MD

dancelwerk · Posted: Wed Jan 06, 2010 1:19 pm Post subject: wiring dude

hi, to all, i am been working on the sequencer on christmas, ok now i have a doubt, on the schematics, in the stage count in SW8_1 there are a lot of resistors but

do i have to wire all pins of SW8_1 to SW8_2, or only the pin 8?
(i have the same doubt on SW4_1 to SW4_2)

the others switchs are clear on the schematics but i have this doubt.

for now that is all i have many questions on the future, i promise you, hahaha,

happy new year to all

Fernando.

ryktnk · Posted: Wed Jan 06, 2010 4:54 pm Post subject: Re: wiring dude

dancelwerk · Posted: Thu Jan 07, 2010 12:32 pm Post subject: more problems

hi again, i wired all connections, less pin 1 at all, and i have the following problems

.- the sequencer run
.- leds working in the order of the pots
.- start, stop, next, reset and prev, works

now the problems,

.- i have only a note on forever, not gate never, is like when you hold a key forever
.- tempo is very fast in the minimal position and light speed in the maximal
.- any potenciometer of the steps responds.
.- mode and step division doesn't work
.- the stage gate mode control and stage count control doesn't work

that is all, for now.

i hope somebody can help me. Can the people who finish the sequencer put pictures of the wiring? i think this pictures could be very helpful to people like me. Embarassed

Thanks in advance

Fernando.

ryktnk · Posted: Thu Jan 07, 2010 5:23 pm Post subject: Re: more problems

dancelwerk · Posted: Fri Jan 08, 2010 4:05 pm Post subject: we will make it easy

hi again, i think is better for you follow the wiring job, i unwired all and start again, i built the xerox design, i take a picture for you is not a good picture, i will try to get another camera for a better macro pictures, but i think is better to correct possible errors and could be a good tutorial for future amateur builders like me.

look the picture and say me if i am going in the correct way.

thanks a lot and sorry to be a pain in the ass Embarassed

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