M185 sequencer Project - NEW PCB VERSION

[The Alison Project]

Here's a pic of my finished Dual version.

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[ryktnk]

oh la la !

That looks great, and big.

Well done.

-ryk

[lexvortex]

Here's my attempt at a panel for the M-185. It's not done yet, I'm just waiting for the hardware in the mail to make any last tweaks so that I can make sure it all fits I'm not sure whether I should have a sub panel for the switches or just mount them directly to the panel.

Cheers,
Dave

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[del_poolp]

Hi,

It's My first try for the adaptation of the faceplate for Eurorack format :

http://www.themeloon.net/wp-content/uploads/2008/12/frontdesign-ryk-m185-sequencer.pdf

Of what do you think of it?

I added a modification, a gate out by step.

Have you an idea of cabling for this modification ?

Thanks



PS : ->ryktnk : You have a HPGL file for your logo or FPD file of your faceplate ?

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[numbernone]

Got my switches today LIGHTNING SPEED too. They look great.

If some kind soul would like to post an FPD file for the switch cutouts and mounting holes, I would be beyond eternally appreciative. I am a front panel designer virgin, and would like someone gentle to introduce me!

[ryktnk]

Hello del_poolp

The panel looks very nice !

But you have missed out a switch
and need to change the "mode" switch.

Have a look at the panel wiring PDF as there
is a 4-way switch for the sequencer mode [this
used to be random on/off on my old panel picture]

Also there is a new 4-way switch which is for the stage
subdivisions, sorry.

If you would like to add a "RYK" logo I can send
one over, very flattered !

cheers

-ryk

[del_poolp]

I have corrected my front panel

[numbernone]

So it looks like I will be building these out sooner than expected, but I still have few questions I want to clear up about the wiring before I proceed.

The switches for stage 2 show connections to the like numbered pins of the stage 1 switches. Should then the switches for stage 3 connect back to stage 2 and so on chronologically? If so, the 8 position switches show no connection for pin 1, these will then be left alone? The 4 position for stage 1 shows no connection on pin 1, but stage 2 shows to connect back to stage one on pin 1, is this correct?

Man, attaching the ladder resistors to the little switches is gonna be a blast!!

Thats it for now, thanks!

[ryktnk]

hello numbernone

Re: switch wiring.

Sorry it's a little confusing.

Yes the all the stage 8-way switches are wired in parallel.
Pin 1 of theses switches is left unconnected.
Pin Q [the pole of the switch] is connected individually to the
"POT" connections on the PCB via a Diode [pot1, pot2,pot3 etc]

Re the 4-way switches, sorry yes the PIN 1 is also
left unconnected on all these switches [the diagram is a little misleading]

The resistors only need connecting on the first switch, it is not
too hard as the switches are big enough.

I think the PCB soldering of the LED resistors is much more of
a blast

have fun !

-ryk

[mono-poly]

That dual version by The Alison Project looks great!

[norman phay]

Just sent payment for the switches, Ryk. Many thanks & sorry for the delay - I started a new job quite recently and it's taken up a bit of my mental space over these last 2 weeks.

[lexvortex]

Hi Ryktnk,

I have a bunch of BC548B transistors lying around and was wondering if I could use these instead of the BC547's?

Thanks,
Dave

[ryktnk]

hello

yes should be fine, the transistors aren't super critical.

ryl

[lexvortex]

Great!! Thanks

[janvanvolt]

ryktnk:

i need some answers i finally got all parts for the frontpanel together and now i am working my way thru the diagrams and wiring out.

- on the stage gate switches, which end is P1/P5 (? the 2 or 3 pole end?)
- same as with the stage count, is P1 = step 8 or step 1?)

also i do not understand the wiring of step 2-8. do i need to connect each P2-P8 together (e.g. like a bus system?)
(and P1-p4 of the stage gate mode ?)

[ryktnk]

[janvanvolt]

[ryktnk]

[norman phay]

Ryk, for the 547 transistors I have a bunch of mixed 547Bs and 547Cs. Does it matter which I use, and can I mix them on one board, please?

Many thanks.

[ryktnk]

[lexvortex]

Hi,
Where can I get the screws for the specialty switches from Ryktnk or what size I should look for? I've been to my local hardware and surplus store but can't get something to fit.

Thanks,
Dave

[ryktnk]

[lexvortex]

Hmmmm, I've looked at several sights for an M2.6 x 0.45 bolt size including the usual suspects (digi-key, etc) but can only find one type of bolt that will fit but its got a big ugly hex head likethis,

http://www.4chobbysupply.com/servlet/the-144/M2.6-x-6mm-Socket/Detail

whereas I would prefer a pan-head or button-head type head that is smaller and doesn't stick up too far from the surface I did find the one below but it has the dimensions M2.5 x 0.45, would that work or is it too small?

http://www.modelfixings.co.uk/ht_button_heads.htm?qty=1.00&sub=1.00&shp=0.00&dis=0.00&vch=0.00&tax=0.00&tot=1.00&sd=&tp=CONTINUE+SHOPPING

Does anyone have a link to somewhere where I can get something like that?

Thanks,
Dave

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[ryktnk]

[lexvortex]

Great!! Thanks, I just emailed them to get a quote

Cheers,
Dave