Soma - LYRA-8 DIY Kit

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Purveyor2
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Post by Purveyor2 » Sat Sep 15, 2018 5:39 pm

Cool - thanks.

shiftr
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Post by shiftr » Tue Sep 18, 2018 2:43 am

I found also 2 1uF electrolytic caps on the PCB not mentioned in the BOM.
(on the pcb as 1m)

rossgrady
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Post by rossgrady » Wed Sep 19, 2018 10:43 am

VCOscillator wrote:
Blake Smith wrote:I think I did a silly thing and soldered in the 2 smd 4093 chips the wrong way around, however I'm not 100% sure as I'm not completely sure where the "1" pins are on these.

Before I start making a mess of things and trying to remove them, I'm wondering if anyone who knows better can take a quick look at this photo and confirm that I messed them up.

ThanksImage

I had to look this up also - the 4903 should be the other way around same goes for 1-4.
Yep -- with SMD ICs if there isn't a dot or a notch then the pin-1 side will be beveled -- you can see the angle to the casing in this photo.

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Re: Lyra 8 BOM from Mouser and other sources for parts

Post by rossgrady » Wed Sep 19, 2018 10:47 am

philguzzo wrote:Attached you can find the Mouser BOM that I ordered. I cannot guarantee there aren't mistakes so you should do your own due diligence.

...

I think that's about it. It took better than a week and having to cross check the list several times to figure this out and like I said above, I can't guarantee there aren't mistakes or things ordered that are wrong. It's the joy of DIY ain't it?
Thanks for the detailed list!

For ppl in the US or Asia, Tayda has quite a few of the things that you sourced from eBay (they also sell on eBay so you may have gotten some stuff from them that way) & their prices are way better than Mouser, although not as cheap as some of the crazy-cheap stuff you can get from China on eBay. My impression, which may or may not be accurate, is that Tayda is about as cheap as you can get without crossing over into the land of "hmm this part may or may not be counterfeit" :)

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Alfrede
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Post by Alfrede » Thu Sep 20, 2018 3:32 pm

I just make a photo where the IC is not soldered but in the correct Position and Pin 1 marked

Image[/img]

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philguzzo
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Re: Lyra 8 BOM from Mouser and other sources for parts

Post by philguzzo » Thu Sep 20, 2018 3:39 pm

rossgrady wrote:
Thanks for the detailed list!

For ppl in the US or Asia, Tayda has quite a few of the things that you sourced from eBay (they also sell on eBay so you may have gotten some stuff from them that way) & their prices are way better than Mouser, although not as cheap as some of the crazy-cheap stuff you can get from China on eBay. My impression, which may or may not be accurate, is that Tayda is about as cheap as you can get without crossing over into the land of "hmm this part may or may not be counterfeit" :)
Thanks for that info. Wish I would have figured that out before I got my parts ordered! Good to know for future projects, as of know I've got most of my parts on the way....I hope...:)

4floorsofwhores
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Post by 4floorsofwhores » Fri Sep 21, 2018 12:33 pm

Alfrede wrote:I just make a photo where the IC is not soldered but in the correct Position and Pin 1 marked

Image[/img]
Yes that's right
Careful now

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secrethero303
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Post by secrethero303 » Fri Sep 21, 2018 1:46 pm

Finally completed my build! :yay:

Image

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Alfrede
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Post by Alfrede » Fri Sep 21, 2018 4:30 pm

Hey congrats secrethero how long do you need for all?

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secrethero303
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Post by secrethero303 » Fri Sep 21, 2018 5:06 pm

Alfrede wrote:Hey congrats secrethero how long do you need for all?
I just started it last week. Took a while to collect up all the parts, but the build itself went pretty quickly.

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Alfrede
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Post by Alfrede » Fri Sep 21, 2018 6:23 pm

I can agree it is going good by the hand but in some resistor values i have in the BOM more than i can see in the PCB is it by you the same?

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secrethero303
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Post by secrethero303 » Fri Sep 21, 2018 7:25 pm

Alfrede wrote:I can agree it is going good by the hand but in some resistor values i have in the BOM more than i can see in the PCB is it by you the same?
Yes there were a few resistors that didn’t match the BOM, same with capacitors. I just followed the silkscreen printed on the PCB and all was fine.

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Post by Purveyor2 » Sat Sep 22, 2018 5:16 pm

secrethero303 wrote:Finally completed my build! :yay:

Image
Looks great. How did you acquire the panel? I planned on a similar enclosure unless one is made for purchase.

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woodster
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Post by woodster » Mon Sep 24, 2018 3:31 pm

I've just today received the PCB set for the LYRA8.
I already have lots of the parts, and most of the outstanding stuff in Mouser and Tayda baskets.
I do have a few stragglers that I'm yet to settle on, so though I'd ask the Muff hive mind for opinions...
Does anybody have any thoughts on the rather large 0.1mF 160v CCCP ? Would a Styrene cap work well here, If not does anybody have any part numbers for an appropriate part ?

I was also pondering which PSU to use, and the associated DC input and Power switch. They would obviously depend on the casing, which leads me to ask if the mooted enclosure mentioned earlier in this thread is still happening ?

Branko
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Post by Branko » Mon Sep 24, 2018 3:34 pm

I haven't begun to build the kit yet, but hopefully I'll get something done within the next couple weeks.

Purveyor2
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Post by Purveyor2 » Mon Sep 24, 2018 3:58 pm

I grabbed one of these. Not done with build yet...Image

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Bjarne
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Post by Bjarne » Tue Sep 25, 2018 10:56 am

I haven’t bought all parts yet but I think it’s worth pointing out that the BOM says that this cap has to be higher than 25v, so 160v is not needed.
Cheers
woodster wrote: Does anybody have any thoughts on the rather large 0.1mF 160v CCCP ? Would a Styrene cap work well here, If not does anybody have any part numbers for an appropriate part ?

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woodster
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Post by woodster » Tue Sep 25, 2018 2:20 pm

Yeah, that's why I was thinking a Styrene might be OK, just wondering, as the footprint is pretty huge.

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Post by Branko » Tue Sep 25, 2018 2:28 pm

Am I way off on thinking this one would work fine? Got that in a Tayda order without checking TOO carefully.

https://www.taydaelectronics.com/8933-d ... -jfgd.html

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secrethero303
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Post by secrethero303 » Tue Sep 25, 2018 2:30 pm

Purveyor2 wrote:
secrethero303 wrote:Finally completed my build! :yay:

Image
Looks great. How did you acquire the panel? I planned on a similar enclosure unless one is made for purchase.
I made the file using FrontDesign and ordered from FrontPanelExpress. I’ve attached the file here in case anyone else wants to use it.
You do not have the required permissions to view the files attached to this post.

Purveyor2
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Post by Purveyor2 » Tue Sep 25, 2018 5:11 pm

^ thanks

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Post by Branko » Fri Sep 28, 2018 1:32 pm

I ordered a sheet of 2mm aluminum, and for now I will probably just get panels made. However, I will do some tests out of cardboard and plan out a full case. If that works out well I will use the rest of the sheet and end up with a few cases to offer here.

Again, nothing concrete, but at least I'm gearing up to do something.

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Bjarne
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Post by Bjarne » Fri Sep 28, 2018 2:17 pm

Take your time. I’ll still be interested.
Cheers
Branko wrote: Again, nothing concrete, but at least I'm gearing up to do something.

t3hh
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Re: Link to LYRA 8 shared cart

Post by t3hh » Sun Sep 30, 2018 7:11 am

philguzzo wrote:Here's a link to a Mouser Cart.

https://www.mouser.com/ProjectManager/P ... c92a72232c
hei, thanks for sharing, thats huge time saver. I'm preparing my order, any additional suggestions?

I'm also planning some simple mods like poting the release time and vibrato frequency but I will think about it later. Also, I'm planning to use banana connectors for CV and Gate.

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pix
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Post by pix » Tue Oct 02, 2018 10:03 am

I'm about to order the screws, any opinions on M3 vs M4? M4 seem like they might get really close...

also it's unclear which ones are used in the original versions...they're so close they look they might be the 12mm M4 ones

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