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diablojoy
Joined: Sep 07, 2008
Posts: 809
Location: melbourne australia
Audio files: 11
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 Posted: Mon Sep 05, 2011 2:58 am Post subject:
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| Quote: | | It is almost a trigger output already, though -- the gate and clock are being ANDed and form a 1/3 clock pulse output that ends before the next note occurs. |
just wondering what the duty cycle of the clock you have been testing this with is , ie : 50% yes? |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Mon Sep 05, 2011 7:27 am Post subject:
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| synthesist wrote: | I never bought a pcb cause for me it's not really DIY if I dont build on a stripboard. But this will be my first one, cause the last time I tried to build a baby 8 sequ, I almost died hanging myself with wires...
I would be interested in a double set that fits one a euro rack.
But I dont understand the difference between the "full component kit" and the "minimal kit". Does it contain the same components and the only difference is that you have to mount pots and switches on the board? |
Hi there synthesist!
Well, it sounds like you're a perfect candidate for building a sympleSEQ!
Ah, sorry if my wording has confused you. I see you are from Austria! Greetings 
Anyway, the difference is that the minimal kit includes just the two PCBs, board interconnects, machine screws to mount it, and the board mount pots and switches. It is for someone that has all of the parts on the bill of materials or wishes to order them themselves. All of the kits have board mounted potentiometers and switches, as it is the main point of the sympleSEQ.
The FULL kit includes all of the previously mentioned stuff, as well as everything you need from the bill of materials. By that I mean it has the ICs, capacitors, resistors, diodes, LEDs, and everything else except jacks, panel space and potentiometer knobs to put one together. It is the easiest option to build from, but like I said, you will still need to add your choice of knobs and jacks, as everyone's preference is different.
I encourage you to take a quick look at the bill of materials and decide whether or not you wish to get a kit with them included, or find parts yourself!
Here is the bill of materials link: http://tinyurl.com/3qd6bow
I hope that helps. If you have any more questions, do not hesitate to ask |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Mon Sep 05, 2011 7:37 am Post subject:
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| diablojoy wrote: | | Quote: | | It is almost a trigger output already, though -- the gate and clock are being ANDed and form a 1/3 clock pulse output that ends before the next note occurs. |
just wondering what the duty cycle of the clock you have been testing this with is , ie : 50% yes? |
Hiya Diablojoy! The clock is provided by a ~33.33% duty cycle CD40106 Hex Inverter, which is ANDed with the CD4017's 100% duty cycle gate. I think I may have worded that incorrectly at first.
I was under the impression that a shorter gate would be preferable, instead of tying the gates together. It's not an extremely elegant solution, but it works and keeps the design simple! If another option is wanted, you can always feed an external clock in and get a longer duty cycle/gate. |
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philoop
Joined: Aug 19, 2011
Posts: 15
Location: hamburg
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Posted: Mon Sep 05, 2011 9:07 am Post subject:
simple seq
Subject description: improvment |
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thats very nice i just wonder why u didn't put a slide /reset bus?
thats easy (for U) and makes it more hackable.. |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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Posted: Mon Sep 05, 2011 9:39 am Post subject:
Re: simple seq
Subject description: improvment |
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| philoop wrote: | thats very nice i just wonder why u didn't put a slide /reset bus?
thats easy (for U) and makes it more hackable.. |
I'm not sure if I understand what you mean by a slide bus...there is reset functionality built in, now. You can send a +VCC signal into it and the sequencer will reset and gate output will hold until the input is brought back to GND, at which point it will start sequencing again. The option is also there to add a switch to manually reset without using logic from somewhere else.
Is that what you mean? |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Mon Sep 05, 2011 1:21 pm Post subject:
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I am very pleased to announce that Ben Marshall of Re:Synthesis / bigbluewave.co.uk will be offering custom etched, silk-screened panels for the sympleSEQ!
Details have yet to be determined, but it looks like he is going to be offering a 1U wide MOTM/.com style vertical panel containing one sympleSEQ channel, and also offering fully assembled units! Check out some of his awesome work here!
http://www.bigbluewave.co.uk/custom_modular_panels.htm |
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diablojoy
Joined: Sep 07, 2008
Posts: 809
Location: melbourne australia
Audio files: 11
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| Posted: Mon Sep 05, 2011 2:55 pm Post subject:
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| Quote: | | The clock is provided by a ~33.33% duty cycle CD40106 Hex Inverter, which is ANDed with the CD4017's 100% duty cycle gate. |
orsm I was hoping that was the way you went.
if i am reading this right then gate length variation will be possible
if using an external clock such as foniks master clock which has
VC PWM  |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Mon Sep 05, 2011 4:01 pm Post subject:
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| diablojoy wrote: | | Quote: | | The clock is provided by a ~33.33% duty cycle CD40106 Hex Inverter, which is ANDed with the CD4017's 100% duty cycle gate. |
orsm I was hoping that was the way you went.
if i am reading this right then gate length variation will be possible
if using an external clock such as foniks master clock which has
VC PWM |
Yes -- you read that correctly You should be able to vary the length of pulse using a different duty cycle clock! |
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diablojoy
Joined: Sep 07, 2008
Posts: 809
Location: melbourne australia
Audio files: 11
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| Posted: Mon Sep 05, 2011 4:23 pm Post subject:
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thats great i think matthias will be pleased also
I think its what he was getting at with his previous post
A definite clincher for me, just need to work on my finances now
have worked out how a 64 step seq in my head should work using these boards but will need to wait until i can get 8 full kits together to prove it in reality.
I think you have a real winner here great work |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Mon Sep 05, 2011 4:25 pm Post subject:
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| diablojoy wrote: | thats great i think matthias will be pleased also
I think its what he was getting at with his previous post
A definite clincher for me, just need to work on my finances now
have worked out how a 64 step seq in my head should work using these boards but will need to wait until i can get 8 full kits together to prove it in reality.
I think you have a real winner here great work |
Aw, yay! That makes me very happy to hear that
I am the type that constantly concerns myself over others' appreciation of my work, so it makes me happy to hear that. Thank you!
And, not to worry! There are 50 days left to get funds acquired, so you have lots of time ^_^
When you are ready, let me know and I will make a special package offering on the indiegogo.com site for you (with the shipping combined) |
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diablojoy
Joined: Sep 07, 2008
Posts: 809
Location: melbourne australia
Audio files: 11
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| Posted: Mon Sep 05, 2011 6:06 pm Post subject:
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| thank you very much for that |
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dnode
Joined: Aug 07, 2009
Posts: 11
Location: Nederland
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| Posted: Mon Sep 12, 2011 8:30 am Post subject:
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Could you explain why you are using indiegogo? If I understand well, all money is gone (to you) when goal is not reached. What are you planning to do then?
I think kickstarter's conditions are favourable, because money is only exchanged between parties when goal is reached ... if not, nothing (ex-)changes.
Or did I really not understand these new economy startup marvels?
And yes, that's correct ... more certainty on my side means more probability of investing ... |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Mon Sep 12, 2011 4:58 pm Post subject:
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| dnode wrote: | Could you explain why you are using indiegogo? If I understand well, all money is gone (to you) when goal is not reached. What are you planning to do then?
I think kickstarter's conditions are favourable, because money is only exchanged between parties when goal is reached ... if not, nothing (ex-)changes.
Or did I really not understand these new economy startup marvels?
And yes, that's correct ... more certainty on my side means more probability of investing ... |
Excellent questions. I certainly wanted to use Kickstarter!
My reason for not doing so? It's simple -- Kickstarter (unfortunately) does not let anyone but Americans with an American bank account use their website for a project. You can pay regardless of nationality, but only Americans can use it.
I am in Canada, so that's not really an option...naturally I looked for other options then, and the one that seems to be second popular is Indiegogo.
When the deadline rolls around, if we have not reached $2,800, I will do a re-analysis of my cost per unit at the new cost per parts due to the not meeting quantities for my current cost analysis.
If the hit on my profit isn't too bad, we'll go along anyway, I'll take a profit hit, and I'll fill everyone's orders as requested. If the hit on my profit makes it not worth my time to continue with it, then everybody will have their funds reimbursed.
I seriously doubt it's going to go that route, though -- Ben of Re:Synthesis is offering awesome panels and there is a lot of interest -- word just needs to be circulated a bit more |
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dnode
Joined: Aug 07, 2009
Posts: 11
Location: Nederland
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| Posted: Tue Sep 13, 2011 1:14 am Post subject:
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OK, understand, thanks for explaining!
I don't mind if boards/kits get a little more expensive, just wanted to know if you would proceed anyway. |
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dnode
Joined: Aug 07, 2009
Posts: 11
Location: Nederland
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| Posted: Tue Sep 13, 2011 1:15 am Post subject:
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... and the reimbursement sounds good too! # |
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fonik
Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
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| Posted: Tue Sep 13, 2011 3:06 am Post subject:
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now we passed the 800 USD. 
_________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Tue Sep 13, 2011 4:40 am Post subject:
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| dnode wrote: | OK, understand, thanks for explaining!
I don't mind if boards/kits get a little more expensive, just wanted to know if you would proceed anyway. |
Yay! Happy days No problem! I'm happy to explain.
It is my will to ensure that this project happens as long as it's possible. I am doing it more for the community and for the experience than monetary gain, so even if my profit is quite low I will still try to make it work! |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Tue Sep 13, 2011 4:43 am Post subject:
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| fonik wrote: | | now we passed the 800 USD. |
Woot! Thanks Mathias
I am thinking we should get a lot of contributions flooding in once I make a video and the second prototype. I am presently awaiting the arrival of the switches for the second prototype so that I can actually make it! Argh... |
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blinky909
Joined: Sep 14, 2011
Posts: 5
Location: Baltimore, MD
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| Posted: Wed Sep 14, 2011 7:19 am Post subject:
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used to have a small MOTM system and miss it dearly, so i think this would be a great way to start a new system. i'm down for two, just need to wait a a couple of weeks before i commit the funds - been a bad boy buying tons of toys.
could these be cascaded in MOTM panels to make an 8x2 or 16x1? that would be super cool.
-Steve |
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fonik
Joined: Jun 07, 2006
Posts: 3950
Location: Germany
Audio files: 23
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| Posted: Wed Sep 14, 2011 11:36 am Post subject:
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| blinky909 wrote: | | could these be cascaded in MOTM panels to make an 8x2 or 16x1? that would be super cool. |
unfortunately it is not that easy to link CD4017 based sequencers.
nevertheless, cascading is the right answer: one could use i.e. a 4-step sequential switch to cascade up to 4 of these (i am sold some PCBs lately ). however they will not be triggered one by one (seq1 steps 1-8, then seq2 steps 1-, but cascaded (seq1 step1, seq2 step1, seq3 step1, seq4 step4, seq1 step2 and so forth). that's what i will do.
_________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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blinky909
Joined: Sep 14, 2011
Posts: 5
Location: Baltimore, MD
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| Posted: Wed Sep 14, 2011 11:52 am Post subject:
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i'm wonder if there would be a way to have a flip-flopping null on the 4017 trigger input when cascaded so the first 4017 isn't retriggered until the second 4017 finishes it's count.
or
they run in tandem but flip muted gate outputs when chained. of course the summed gates would have to be dealt with as well. starting to get into shift register land now and it's getting more complex.
might be easier to use 2 different triggers with different patterns as the clock source than to fuse on additional logic features. |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Wed Sep 14, 2011 4:10 pm Post subject:
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There are schematics linked on the Indiegogo page as well as the first post in this thread if you wish to figure out a way to make longer sequences. I am NOT providing any documentation on the matter, though!
Well, try to squeeze it in before the funding cut-off to really help! You have...40 days left! |
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diablojoy
Joined: Sep 07, 2008
Posts: 809
Location: melbourne australia
Audio files: 11
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| Posted: Wed Sep 14, 2011 5:03 pm Post subject:
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Fonik wrote
| Quote: | | but cascaded (seq1 step1, seq2 step1, seq3 step1, seq4 step4, seq1 step2 and so forth). that's what i will do. |
I was of the same thinking and have started drawing up a board to do this
for 8 sequencer boards though 4 will also be easy to accomplish on the same board with a moveable link and not entirely stuffing the board
I plan to be ordering a few prototype boards when i am ready if matthias dosent beat me to it that is 
matthias I think sequentially switching the cv outs simultaneously
makes sense yes ?
hexinverter i think i can go ahead this weekend for 8 full kits
finances dont appear to bad at the moment so i think i can stretch the budget that far
edited for stupid spelling |
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HexInverter
Joined: Aug 21, 2010
Posts: 338
Location: Canada
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| Posted: Wed Sep 14, 2011 5:08 pm Post subject:
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| diablojoy wrote: | Fonik wrote
| Quote: | | but cascaded (seq1 step1, seq2 step1, seq3 step1, seq4 step4, seq1 step2 and so forth). that's what i will do. |
I was of the same thinking and have started drawing up a board to do this
for 8 sequencer boards though 4 will also be easy to accomplish on the same board with a moveable link and not entirely stuffing the board
I plan to be ordering a few prototype boards when i am ready if matthias dosent beat me to it that is
matthias I think sequentially switching the cv outs simultaneously
makes sense yes ?
hexinverter i think i can go ahead this weekend for 8 full kits
finances dont appear to bad at the moment so i think i can stretch the budget that far
edited for stupid spelling |
That sounds like fun! I'm sure others would be interested in what you come up with as well!
8 full kits? Okay! Let me know when you need a listing made for them on the page. |
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emdot_ambient
Joined: Nov 22, 2009
Posts: 667
Location: Frederick, MD
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| Posted: Thu Sep 15, 2011 8:18 am Post subject:
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| fonik wrote: | | ...one could use i.e. a 4-step sequential switch to cascade up to 4 of these...however they will not be triggered one by one (seq1 steps 1-8, then seq2 steps 1-, but cascaded (seq1 step1, seq2 step1, seq3 step1, seq4 step4, seq1 step2 and so forth). that's what i will do. |
But you could use a clock divider to trigger the 4-step sequential switch, set it to divide by 8, then the switch would only change every 8 steps and the seqeuncers would be triggered: Seq1, steps 1-8; Seq2, steps 1-8; Seq3, steps 1-8; Seq4, steps 1-8.
I'm seriously thinking of doing 4 of these and doing that. Probably including switches to change the clock divider between different divisions. Might make for some fun in live performances. Might also look into other switching possibilities (by-passing the seq switch to run all of them independently, adding CV transposition summing, running the clock divder through a bus line so the individual sequencers can be clocked with that instead of the master clock...etc.).
The hard part is figuring out if I want to make the seq switches and clock divider available for external use as well.
_________________
Looking for a certain ratio since 1978 |
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