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 Forum index » DIY Hardware and Software
M185 sequencer Project - NEW PCB VERSION
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Sat Jan 09, 2010 12:30 am    Post subject: switch wiring Reply with quote  Mark this post and the followings unread

hi again, I made in corel a photomontage showing the positions of the wiring of the switchs, how I did.

I put A or B depending of the point of the wiring but I assume both are correct, if I wrong let me know.

If all is ok, I wire the switchs between they.

I wait your answers.


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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Sun Jan 10, 2010 10:50 am    Post subject: me again. Reply with quote  Mark this post and the followings unread

hi again i can't wait to wiring, i finish again, and now this the initial report, i want to hear different notes when i move stage cv control pots

STAGE CV CONTROL POTS: doest not respond or yes i only can listen a tik, tik, tik

STAGE INDICATORS: works fine

STAGE GATE MODE CONTROL: works fine

STAGE COUNT CONTROL: works fine

TEMPO CONTROL: works fine, is a little fast in the minimun, i uses a 47K, not a 50K is it important?

GATE TIME CONTROL: i think is not working very well, works but i can't hear different note to check is like a closed envelope at minimum, tik, tik, tik

PORTAMENTO CONTROL: i think that is not working

STAGES CONTROL: perfect the leds makes the right job in the modes


RESET CONTROL
PREV CONTROL
NEXT CONTROL yes works fine

RANGE: i don't know very well, makes a change in the octave

STEPDIV CONTROL: i think working well

MODE CONTROL: yes working fine


CV OUT JACK: tik, tik, tik, i can hear any note, perhaps is not working

GATE OUT JACK: works fine

CLOCK IN JACK, works fine

CLOCK OUT JACK: i didn't check


ok i wait your answers again, perhaps the problem is on the pcb.
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ryktnk



Joined: Apr 24, 2008
Posts: 285
Location: london
Audio files: 1

PostPosted: Mon Jan 11, 2010 4:57 am    Post subject: Re: me again. Reply with quote  Mark this post and the followings unread

dancelwerk wrote:
hi again i can't wait to wiring, i finish again, and now this the initial report, i want to hear different notes when i move stage cv control pots

CV OUT JACK: tik, tik, tik, i can hear any note, perhaps is not working

.


Hello

Sorry for the delay.

Sounds like the wiring for the switches is now ok [i couldn't see
any diff between opt A or opt B]
Make sure the other end of the 220k resistor is connected to ground.

What do you mean about
"CV OUT JACK: tik, tik, tik, i can hear any note, perhaps is not working
"

Have you connected this to an VCO, or are you just listening ?

Can you check the LED status.
If stop the clock, and then press RESET.
After RESET the first stage LED should light up, when you press UP
then it should light bright if the Gate Mode for the stage is set to an "ON" mode - ["I" "II" "-"] signalling there is a gate high.
You can also try DOWN to check the other stages of course.

If this is working then the Gate circuit is correct, and you can then
continue to test the CV circuit.

Use a multimeter to check the voltage on the POT
channel wire of the current stage that is active [Bright LED]
It should be about 5v.
Than check the wiper of that Potentiometer, if you turn
the dial it should swing from 0v to about 5v.

If this is ok, then check the voltage on the PCVS rail whilst adjusting the
potentiometer of the Lit stage.
This should go from 0v to about 5v.

If this is ok, then check the voltage on PORT1 [the wire to goes to the
portamento potentiometer]
This should also go form 0v to 5v when adjusting the CV potentiometer
of the lit stage.

If this is ok, then check the voltage on the PCV2, this is the wire that
goes to the voltage range switch.
This should also go form 0v to 5v when adjusting the CV potentiometer
of the lit stage.
Make sure the voltage range switch is correctly wired to PCV1, PCV2 and PCV3.

If all this works then hopefully there should be a healthy CV from
the CVOUT connection.

Let me know how you get on.

-ryk
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Mon Jan 11, 2010 8:40 am    Post subject: Re: me again. Reply with quote  Mark this post and the followings unread

[quote="ryktnk"]
dancelwerk wrote:



Have you connected this to an VCO, or are you just listening



-ryk




hahahaha, yes of course i have connected to a VCO, i try on Arp2600 (CV in) Korg Ms 20, (yes this is Hzvolt, but it should be works, am i wrong?), korg MS50 (+5-5 Volt IN) and Roland SH2, (CV and gate IN) but only get like a click, when i say Tik or click i refer to when you put all values of a ADSR to minimum you only hear a cutter sound that sounds like a "tik" ,

perhaps i am wrong connecting, i connect CVout of sequencer to CV in of synths and gate from GATEOUT of sequencer to CVgate in of Synths, Are the correct connections?


don't worry for the delay, i will check all that you said me and let you know.

Thanks for the support and sorry again.

Fernando
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Mon Jan 11, 2010 11:50 am    Post subject: Re: me again. Reply with quote  Mark this post and the followings unread

ryktnk wrote:




Can you check the LED status.
If stop the clock, and then press RESET.
After RESET the first stage LED should light up, when you press UP
then it should light bright if the Gate Mode for the stage is set to an "ON" mode - ["I" "II" "-"] signalling there is a gate high.
You can also try DOWN to check the other stages of course.

If this is working then the Gate circuit is correct, and you can then
continue to test the CV circuit.

-ryk


ok it works fine

ryktnk wrote:

Use a multimeter to check the voltage on the POT
channel wire of the current stage that is active [Bright LED]
It should be about 5v.
Than check the wiper of that Potentiometer, if you turn
the dial it should swing from 0v to about 5v.

-ryk


in the step 1 pot is about of 5V, always is continuous on 5v even when the sequencer is stop.
when i turn dial always 5V

and CVOUT in the pcb and for extension in the Jack socket always gives 14.14 V

is it normal???



-ryk[/quote]
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Mon Jan 11, 2010 1:18 pm    Post subject: mp3 Reply with quote  Mark this post and the followings unread

this is a sample start opening the gate time control from min to max and after rising up the tempo and down and closing the gate time control,

stages count are 8
stage gate mode control position 1
portamento at 0
stages control mode forward
Range 5v
stepdiv at 1

i hope you help to listen
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Mon Jan 11, 2010 1:19 pm    Post subject: mp3 Reply with quote  Mark this post and the followings unread

this is a sample start opening the gate time control from min to max and after rising up the tempo and down and closing the gate time control,

stages count are 8
stage gate mode control position 1
portamento at 0
stages control mode forward
Range 5v
stepdiv at 1

i hope you help to listen it


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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Tue Jan 12, 2010 11:21 am    Post subject: now i have normal sound Reply with quote  Mark this post and the followings unread

hi again, i made some progress

now i have long notes and the gate mode control works fine but i haven't Control CV pots, and i have 2.3 V in the cvout but always is the same voltage in the out, doesn't change.

this is other sample with the SH-2 opening gate of sequencer and closing again, there are the 2 vcos a little detuning, but how you can hear the same note always.

ufffff, is so frustrating.

Thanks to understand me


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ryktnk



Joined: Apr 24, 2008
Posts: 285
Location: london
Audio files: 1

PostPosted: Wed Jan 13, 2010 1:41 am    Post subject: Re: me again. Reply with quote  Mark this post and the followings unread

dancelwerk wrote:


in the step 1 pot is about of 5V, always is continuous on 5v even when the sequencer is stop.
when i turn dial always 5V

and CVOUT in the pcb and for extension in the Jack socket always gives 14.14 V

is it normal???

-ryk
[/quote]

Hello

Are you checking the wiper voltage ?
If it is always 5V then you have wire the Potentiometer wrong.
You should be able to turn the Potentiometer and get 0V on the wiper,
as one side of the Potentiometer is connected to ground.

Have a look at the wiring on the Potentiometer.

-ryk
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Wed Jan 13, 2010 8:54 am    Post subject: wiper is ok Reply with quote  Mark this post and the followings unread

hi

wiper is ok check 0 at min and 5 at max

now what should i check?
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dancelwerk



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Posts: 93
Location: berlin
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PostPosted: Wed Jan 13, 2010 12:31 pm    Post subject: me again Reply with quote  Mark this post and the followings unread

me again, lately this topic is monologue by me, sorry for the problems, but understand me,i want to the sequencer working, sorry again, i made another photomontage like i wired the potenciometers, perhaps i have an error, look at and say to me.

I try to help you to find a solution, thanks in advance.

Fernando.


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ryktnk



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Posts: 285
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PostPosted: Thu Jan 14, 2010 5:00 am    Post subject: Re: wiper is ok Reply with quote  Mark this post and the followings unread

dancelwerk wrote:
hi
wiper is ok check 0 at min and 5 at max
now what should i check?


Hello

If the wiper voltage swings in the range then follow the next steps
I wrote before:-

Check the voltage on the PCVS rail whilst adjusting the
potentiometer of the Lit stage.
This should go from 0v to about 5v.
If not then make sure all the diodes on the potentiometer wiper
connections are the correct way around.

If this is ok, then check the voltage on PORT1 [the wire to goes to the
portamento potentiometer]
This should also go form 0v to 5v when adjusting the CV potentiometer
of the lit stage.

If this is ok, then check the voltage on the PCV2, this is the wire that
goes to the voltage range switch.
This should also go form 0v to 5v when adjusting the CV potentiometer
of the lit stage.
Make sure the voltage range switch is correctly wired to PCV1, PCV2 and PCV3.

If all this works then hopefully there should be a healthy CV from
the CVOUT connection.

Let me know how you get on.

-ryk
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Thu Jan 14, 2010 4:50 pm    Post subject: Re: wiper is ok Reply with quote  Mark this post and the followings unread

ryktnk wrote:
dancelwerk wrote:
hi
wiper is ok check 0 at min and 5 at max
now what should i check?


Hello

If the wiper voltage swings in the range then follow the next steps
I wrote before:-

Check the voltage on the PCVS rail whilst adjusting the
potentiometer of the Lit stage.
This should go from 0v to about 5v.
If not then make sure all the diodes on the potentiometer wiper
connections are the correct way around.

If this is ok, then check the voltage on PORT1 [the wire to goes to the
portamento potentiometer]
This should also go form 0v to 5v when adjusting the CV potentiometer
of the lit stage.

If this is ok, then check the voltage on the PCV2, this is the wire that
goes to the voltage range switch.
This should also go form 0v to 5v when adjusting the CV potentiometer
of the lit stage.
Make sure the voltage range switch is correctly wired to PCV1, PCV2 and PCV3.

If all this works then hopefully there should be a healthy CV from
the CVOUT connection.

Let me know how you get on.

-ryk



all is ok, working, giving me the correct voltages you said, but didn't work, and I did try another thing, i unwired the cvout from pcb of the cvout jack (always give me the same value 2.2v), I wired a cable from pcvs rail from diodes directly to the cvout jack, and voila!, now i have control of the cv stages pots, i think the problem is from CVout circuit of the pcb,

what components do I check??
what do you think?
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ryktnk



Joined: Apr 24, 2008
Posts: 285
Location: london
Audio files: 1

PostPosted: Sat Jan 16, 2010 12:26 pm    Post subject: Re: wiper is ok Reply with quote  Mark this post and the followings unread

dancelwerk wrote:

all is ok, working, giving me the correct voltages you said, but didn't work, and I did try another thing, i unwired the cvout from pcb of the cvout jack (always give me the same value 2.2v), I wired a cable from pcvs rail from diodes directly to the cvout jack, and voila!, now i have control of the cv stages pots, i think the problem is from CVout circuit of the pcb,

what components do I check??
what do you think?


Hello

Ok.
If you have got the 0v-5v range on PCV2, then mos of the
CV circuit is working.
You should then check a few components -

R68 - 66.6k
R71 - 100k
R73 - 100k
R72 - 5.26k
R70 - 560R
C14 - 220pF

This is the last stage part of the CV circuit
that scales the voltage with the range switch
for 0-3V and 0-5V.

It is based around 1C4D, so you should check carefully
the soldering of the pins of IC4, especially pins 12,13,14.

-ryk
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Tue Jan 19, 2010 12:30 am    Post subject: hi again Reply with quote  Mark this post and the followings unread

hi rik, I take some values direct from pcb, with sequencer running, this is the values from my sequencer, what values should i have?, i check the components and are correct, should i unwire and change for some new?, or if you can see an problem, what component should i change first and what should it be the correct value?

Thanks in advance.

Fernando.


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ryktnk



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PostPosted: Tue Jan 19, 2010 3:25 am    Post subject: Reply with quote  Mark this post and the followings unread

Hello

At what setting is the Stage CV pot when you took
these values, and was the Gate High [Bright LED] at the time ?

-ryk
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dancelwerk



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PostPosted: Wed Jan 20, 2010 12:34 am    Post subject: hi again Reply with quote  Mark this post and the followings unread

i take this values with all stages cv at maximun in all gate high, stage at 8 steps switch at 3v
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ryktnk



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PostPosted: Wed Jan 20, 2010 3:20 am    Post subject: Re: hi again Reply with quote  Mark this post and the followings unread

dancelwerk wrote:
i take this values with all stages cv at maximun in all gate high, stage at 8 steps switch at 3v


Hello

Well you should have nearly 5V on PORT1.

I thought you had agreed to this before ?

You need to make sure you have a Gate High output
for the S+H part of the CV circuit.
Make sure you have 5V on Pin 2 of IC1 - this will confirm you have
Gate High signal.

If this is true, and your PCVS is about 5V then there is something
wrong with the S+H part of the CV circuit.

Check the following components carefully.

R59 - 10M
R66 - 1M
R43 - 100k
R49 - 47k
R36 - 10k
R37 - 22k
R44 - 22k
R50 - 100k
R51 - 22k
D5 - check polarity
Q15 - 2N3819
Q11 - BC547
Q10 - BC558

If PCVS is around 5V you should also have about 5V on Pin 1 of IC4.

-ryk
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
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PostPosted: Thu Jan 21, 2010 12:52 am    Post subject: no 5v in port1 Reply with quote  Mark this post and the followings unread

hi Ryk,

i haven't 5V on Port1 and i haven't 5V in the pin 2 of Ic1.
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ryktnk



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Posts: 285
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PostPosted: Thu Jan 21, 2010 1:31 am    Post subject: Re: no 5v in port1 Reply with quote  Mark this post and the followings unread

dancelwerk wrote:
hi Ryk,

i haven't 5V on Port1 and i haven't 5V in the pin 2 of Ic1.


Hello

Sorry, previously on the "Thu Jan 14, 2010 11:50 pm" Post, you said that you did have this voltage on Port1.

Ok, if you don't have 5V on pin2 of IC1, then you don't have a Gate High
output.
You can only do all the voltage checks I described previously
when the gate output is High [5v on pin2 IC1]

This means you haven't followed the steps I mentioned
about using the Reset button and then the UP or Down button
to select a stage with a High Gate mode [gate mode I,II, or I-].
Please do this first, and then start to perform the voltage checks
previously.

Are ALL your Stage Gate Mode switches wired correctly ?
If not then you will not get a Gate High output.

This is really important, as the CV only gets routed through to
the CV Out when their is a Gate High output, this probably explains
why the Pots are having no effect.

-ryk
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dancelwerk



Joined: Aug 28, 2009
Posts: 93
Location: berlin
Audio files: 2

PostPosted: Thu Jan 21, 2010 10:15 am    Post subject: power supply Reply with quote  Mark this post and the followings unread

hi again ryk, after all I find the main problem, the power supply, -15v wire cable was broken, now i get better values, sorry, sorry, sorry, I am shamed,
Embarassed Embarassed Embarassed Embarassed Embarassed
I was going you crazy, sorry again, I recheck again well all values and i reported problems if there is.

thanks to be patient with me.

Crying or Very sad Crying or Very sad Crying or Very sad

Fernando.
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ryktnk



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Posts: 285
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PostPosted: Fri Jan 22, 2010 3:52 am    Post subject: Re: power supply Reply with quote  Mark this post and the followings unread

dancelwerk wrote:
hi again ryk, after all I find the main problem, the power supply, -15v wire cable was broken, now i get better values, sorry, sorry, sorry, I am shamed,
Embarassed Embarassed Embarassed Embarassed Embarassed
I was going you crazy, sorry again, I recheck again well all values and i reported problems if there is.

thanks to be patient with me.

Crying or Very sad Crying or Very sad Crying or Very sad

Fernando.


Hello

No problem.

Glad you found the problem.

-ryk
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julian



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

PostPosted: Sun Jan 31, 2010 12:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

Just a quick note - ive allready posted this to the trade section, but the content is quite relevant to this thread....


http://www.thebeast.co.uk/cnc/sale.html


If you click on the link, you will find a selection of panels, in different formats, and for different devices, and a handfull for the m185. Some are perfect whilst others have defects that have caused me not to sepperate them from usual stock.

All panels are photographed, and any defects noted. Some panels are very cheap, whilst others are just good value.

Im located in the UK (europe). The company runs accounts in both euro and sterling, and can take cards with all the usual caveats.

I will ship internationally at cost price. Indication of postal costs are given.

In an ideal world, i wont be making b-grade duplicates.... ; ) So hopefully, when theyre gone, thats it at the given price.


Thank you,
Julian

_________________

For custom cnc engraved panels see - http://www.thebeast.co.uk/cnc/

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Danno Gee Ray



Joined: Sep 25, 2005
Posts: 1351
Location: Telford, PA USA

PostPosted: Sat Mar 20, 2010 4:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

Anyone know a Mouser or Digikey part number for 3.5mm Cliff Jacks?
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emdot_ambient



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

PostPosted: Sat Mar 27, 2010 8:18 pm    Post subject: Reply with quote  Mark this post and the followings unread

ryktnk wrote:
Here are some details for the programmable portamento mod...There are two options for this mod.

OPTION [1]
This requires the V2.1 software...The portamento is set via programming each stage, using the "hold reset" switch method described in the docs.

OPTION [2]
This doesn't require new software, but you will need to add 8 1P2W switches to the panel, and a bit more spaghetti wiring

Clarification: If you have V2.1 can you only use Option 1? From reading the docs Option 1 doesn't sound as functional in a live situation as Option 2.

Oh, and my boards/PIC arrived last week Very Happy
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