Super Sixteen build support thread

Creator of of the Super Sixteen Sequencer and based in San Francisco. This is a DIY and Finished Good product for Eurorack.

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extralifedisco
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Re: Super Sixteen build support thread

Post by extralifedisco » Wed Mar 31, 2021 5:15 pm

Texy wrote:
Wed Mar 31, 2021 12:51 pm
Annoyed with myself !
I ordered two lines of 2N2904's instead of ordering some 2N2906's. So I've ordered some from eBay.
I also got my pcb + panel & Atmel chip from Thonk today, forgetting that it also included the grey tact switch button caps.
Of course they need to go with square switch shafts, not round ones. I found the 'standard' button caps that I ordered to
go with my 9mm high round shafted buttons are slightly too wide to go through the panel holes. So I've also now ordered
some square shafted tact buttons from eBay as well. I have now spent more on parts than if I had (been able to) ordered the
complete DIY kit from Thonk. Ah well, all part of the 'fun' as I mentioned previously.
Texy
I've definitely done that before! I'd also forgotten Thonk was including button caps with the bare PCBs - I sent them some extras in case they sold more of one color kit than the other and I suppose they've started using the extra for the bare kits.

My strategy when doing 100% DIY has been to slowly build up a parts library by ordering 2x the BOM of any module I build. Once you have a sizeable parts bin it gets easier to source the one or two components you don't have lying around.

Texy
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Re: Super Sixteen build support thread

Post by Texy » Fri Apr 02, 2021 4:57 am

Hi Matthew,
I've not quite got all the parts yet, but I've started the first PCB build. Seems I forgot to order the 1uF capacitor with the rest of the majority of the parts from Farnell. I'll have a few 1uF caps in my spares box somewhere - I assume the 160v rating isn't too critical - anything over 25v would be OK ?
Texy

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extralifedisco
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Re: Super Sixteen build support thread

Post by extralifedisco » Sat Apr 03, 2021 2:22 am

Texy wrote:
Fri Apr 02, 2021 4:57 am
Hi Matthew,
I've not quite got all the parts yet, but I've started the first PCB build. Seems I forgot to order the 1uF capacitor with the rest of the majority of the parts from Farnell. I'll have a few 1uF caps in my spares box somewhere - I assume the 160v rating isn't too critical - anything over 25v would be OK ?
Texy
Yeah definitely, anything in the ballpark is fine, it's just decoupling for the 3.3v supply. Have been meaning to swap that line item for a more generic cap.

Texy
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Re: Super Sixteen build support thread

Post by Texy » Sat Apr 03, 2021 2:28 am

.....and the physical size of it, when you show how to bend it over in the build video wouldn’t be necessary 😉
Texy

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Re: Super Sixteen build support thread

Post by Texy » Tue Apr 06, 2021 4:39 am

I'm 80% of the way through the build, still waiting for some switches. Seems the 7-seg display is a little too tight to go through the square hole for it. I'll have to get the scalpel out....
Texy

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extralifedisco
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Re: Super Sixteen build support thread

Post by extralifedisco » Tue Apr 06, 2021 7:53 pm

Texy wrote:
Tue Apr 06, 2021 4:39 am
I'm 80% of the way through the build, still waiting for some switches. Seems the 7-seg display is a little too tight to go through the square hole for it. I'll have to get the scalpel out....
Texy
Square hole? I hope you don't mean the panel cutout - it's meant to sit behind the panel! Though I don't suppose it would hurt anything if it didn't - I think the legs on the display modules I have are too short for it to be mounted so it sticks all the way through though. Generally I put some tape over the back of the display cutout, fit the display, fit the panel, and then flip it over so the display falls down and sits flush against the rear of the panel on the tape.

Texy
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Re: Super Sixteen build support thread

Post by Texy » Wed Apr 07, 2021 2:22 am

Ah right - I mistakenly thought the top of the LED display was meant to be flush with the top of the panel, not the bottom face of it.
It's not soldered yet, and I didn't get a scalpel to it, so no harm done.
Thank s for the reply ;-)
Texy

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Re: Super Sixteen build support thread

Post by Wheelbreak » Wed Apr 07, 2021 12:48 pm

extralifedisco wrote:
Tue Mar 23, 2021 7:18 pm

The memory chip is pretty specific, it does need to be a winbond spiflash chip with the right footprint and 4kb sector erase. I've actually just ordered a few potential alternates and will update the BOM if one of them works properly.
- W25Q80DVSSIG - same chip with slightly wider footprint. should be drop-in the same, but might not be solderable on the existing footprint without hot air and paste
- W25Q40EWSNIG never mind, this is actually a 2.2v chip, would need a different regulator
- W25Q40CLSNIG - 4mB version of the chip, should be compatible as the memory capacity isn't close to maxed, but I want to test this myself and make sure the firmware behaves properly

Is there confirmation on which if any will work? I am starting to source my build as I've just received a panel pcb IC kit.

Mouser seems to be out of the listed 2n3904's and 6's, as long as the pins are the same any other generic 2n3904's or 6's will work right?

as far as the LED's go, I don't see any data sheet to indicate voltage drop. I have a bunch of generic 3mm ones, but am not sure if there would be a problem using them. If I should play better safe than sorry, could someone provide a part number to ones they've used that have worked?

I saw somebody say 10K Pots will work in place of 100k, with that logic 50k would work as well right? All of my 100k are Audio taper.


Thanks for any help in advance

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Re: Super Sixteen build support thread

Post by pjbulls » Wed Apr 07, 2021 12:59 pm

Yes, any generic small signal transistors will work. Same for the LEDs, they are fed from +5V so forward voltage is no concern, worst case you have to tweak the current-limiting resistors if they are too dim/bright. 50K for the pots is fine, the ADC input impedance is nominally very high (and optimized for 10K output impedance IIRC).

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Re: Super Sixteen build support thread

Post by Texy » Wed Apr 07, 2021 1:02 pm

Wheelbreak wrote:
Wed Apr 07, 2021 12:48 pm
extralifedisco wrote:
Tue Mar 23, 2021 7:18 pm

The memory chip is pretty specific, it does need to be a winbond spiflash chip with the right footprint and 4kb sector erase. I've actually just ordered a few potential alternates and will update the BOM if one of them works properly.
- W25Q80DVSSIG - same chip with slightly wider footprint. should be drop-in the same, but might not be solderable on the existing footprint without hot air and paste
- W25Q40EWSNIG never mind, this is actually a 2.2v chip, would need a different regulator
- W25Q40CLSNIG - 4mB version of the chip, should be compatible as the memory capacity isn't close to maxed, but I want to test this myself and make sure the firmware behaves properly
Is there confirmation on which if any will work? I am starting to source my build as I've just received a panel pcb IC kit.
I was able to source 25Q80BVSIG via eBay here in the UK. They are NOT the narrow SOIC footprint, but I managed to bend the legs and solder it in place. However I am waiting for the last few parts before I can finalise my build and confirm everything works, hopefully within the next day or so.....
Texy

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Re: Super Sixteen build support thread

Post by Texy » Fri Apr 09, 2021 9:20 am

Hi,
completed the build today - yah!
That 25Q80BVSIG appears to be working - I was able to save a sequence, and recall it after repowering the rack. Calibration values also stored correctly. So although it isn't the intended footprint, at least it works and readily available.
Texy

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Re: Super Sixteen build support thread

Post by inner_light » Fri Apr 09, 2021 9:49 am

Hi im just wondering if there are any plans to do another run? Id love a full DIY of this one!
Looks so fun and intuitive.

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extralifedisco
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Re: Super Sixteen build support thread

Post by extralifedisco » Fri Apr 09, 2021 8:39 pm

inner_light wrote:
Fri Apr 09, 2021 9:49 am
Hi im just wondering if there are any plans to do another run? Id love a full DIY of this one!
Looks so fun and intuitive.
I'm in the middle of restocking boards and kits right now, but DIY kits are available at synthCube and should be back in stock at Thonk soon. Complete modules are also available on my web shop and at Perfect Circuit.

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inner_light
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Re: Super Sixteen build support thread

Post by inner_light » Sat Apr 10, 2021 11:16 am

extralifedisco wrote:
Fri Apr 09, 2021 8:39 pm
inner_light wrote:
Fri Apr 09, 2021 9:49 am
Hi im just wondering if there are any plans to do another run? Id love a full DIY of this one!
Looks so fun and intuitive.
I'm in the middle of restocking boards and kits right now, but DIY kits are available at synthCube and should be back in stock at Thonk soon. Complete modules are also available on my web shop and at Perfect Circuit.
This is excellent news!
Ill be purchasing a kit soon as I have the :75: :75: :75: :75:
Thank you!

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