EURO x0x-heart - Complete "Kit"

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peteone
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EURO x0x-heart - Complete "Kit"

Post by peteone » Wed Jul 13, 2016 6:00 pm

COMPLETE KIT FOR EURO VERSION OF X0X-HEART

PART 1

- assembled heart http://synthcube.com/cart/open-music-la ... =xox-heart
- pacemaker pcb http://synthcube.com/cart/open-music-la ... emaker-pcb
- panel http://synthcube.com/cart/open-music-la ... panel-18hp

plus mouser BOM for pacemaker from their wiki page
https://www.mouser.com/ProjectManager/P ... ecfb36f6f2

PART 2:

ADDITIONALLY YOU WILL NEED: (sorry unfortunately one company doesn't stock all those extra parts)

- jacks - http://shop.erthenvar.com/collections/a ... ical-jacks (they only sell bag of 50)

- hex-nuts - http://erthenvar.myshopify.com/products/3-5mm-hex-nuts (yup jacks dont come with them!) there is also knurled version if you like

- ribbon cable http://shop.erthenvar.com/products/powe ... 5771973699


- potentiometers - http://smallbear-electronics.mybigcomme ... -pc-mount/ (4 X 50K Linear + 3 x 50K Audio + 1 X 1M Audio) (from the pull down menu)

- knobs http://smallbear-electronics.mybigcomme ... lack-index (needs 8 knobs)


- switches http://www.mcmelectronics.com/product/26-2160 (2 of them)



I hope this post will help other people not so much experienced with part sourcing as well to complete your xox-heart
Last edited by peteone on Tue Jul 26, 2016 7:17 pm, edited 30 times in total.

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Post by guest » Wed Jul 13, 2016 6:08 pm

the sources for the jacks, pots, and switches are listed in the BOM:

http://wiki.openmusiclabs.com/wiki/Euro ... er_bom.pdf

you probably wont need standoffs. there are so many headers, that friction is good enough.
openmusiclabs.com

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Post by peteone » Wed Jul 13, 2016 6:37 pm

thanks but some of those links don't work - I will be updating links - would be awesome if everything was from Mouser sice original BOM is from there....as people comment..

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Post by guest » Wed Jul 13, 2016 7:43 pm

mouser does not carry any of those other parts, which is why they are from other places. i tried to find reasonable parts at mouser, but there wasnt a single manufacturer of pots that had 1MA and 50KB in the same form factor, that was pcb mount and of a reasonable size/cost. which is a bummer. here is the new smallbear link for pots:

http://smallbear-electronics.mybigcomme ... -pc-mount/

here are the jacks. there are a choice for the nuts, and they are not included with the jacks, but are available on the site.
http://shop.erthenvar.com/collections/a ... ical-jacks
openmusiclabs.com

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Post by guest » Wed Jul 13, 2016 7:57 pm

ok, the BOM has been updated with working links. thanks for pointing that out.
openmusiclabs.com

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Post by peteone » Wed Jul 13, 2016 7:59 pm

Will those hi quality jacks from synth cube work fine?

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Post by synthetek » Wed Jul 13, 2016 9:48 pm

peteone wrote:Will those hi quality jacks from synth cube work fine?
No you need the pj301bm type of jacks , synthcube has them too so does erthenvar

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Post by peteone » Thu Jul 14, 2016 12:51 pm

what should rotation angle for the pots be?
also I don't understand what 50k - A and B is - what is A nd B>?

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Post by peteone » Thu Jul 14, 2016 1:07 pm

would this one work for 50k ones?

http://www.digikey.com/product-detail/e ... -ND/203846

would this be 50K A or B?

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Post by synthetek » Thu Jul 14, 2016 1:22 pm

peteone wrote:what should rotation angle for the pots be?
also I don't understand what 50k - A and B is - what is A nd B>?

B is linear taper and A is logarithmic or audio taper , you want right angle pc mount.

Image
Last edited by synthetek on Thu Jul 14, 2016 2:15 pm, edited 1 time in total.

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Post by synthetek » Thu Jul 14, 2016 1:23 pm

peteone wrote:would this one work for 50k ones?

http://www.digikey.com/product-detail/e ... -ND/203846

would this be 50K A or B?
No , get the smallbear ones Tayda has them too but there out of the A50K

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Post by peteone » Thu Jul 14, 2016 1:45 pm

guys - hold one a minute here -

i am not an electrical engineer - dont know anything about values or anything all im trying to do is to order this shit from one store instead 0 going to 4 different places and paying for shipping 4 times - when shipping is more then the parts are...

i cant believe that one store like digikey would not have all thats left to buy

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Post by guest » Thu Jul 14, 2016 2:04 pm

peteone wrote: i cant believe that one store like digikey would not have all thats left to buy
unfortunately, no single store carries every type of pot. unlike resistors, where a 1/4W, axial resistor is pretty much the same regardless of manufacturer, with pots there are hundreds of different 10k pots. you can get linear taper, log taper, reverse taper, center tapped. you can have 6mm, 1/8", or 1/4" shaft, which can be knurled, flatted, slotted, star (of 2 varieties), or smooth. the shaft can also be of 6 different lenghts, and the body width can be 9mm, 12mm, 24mm, round or square. it can be single gang, or up to a dozen pots in one body. it can have concentric shafts for controlling two pots in one, and one of these shafts can have a push/pull switch, which can either be momentary or latching. some have collars, others do not. some of those collars are threaded, others are not. pots are truely the bane of my existence when it comes to designing synths.
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Post by synthetek » Thu Jul 14, 2016 2:08 pm

peteone wrote:guys - hold one a minute here -

i am not an electrical engineer - dont know anything about values or anything all im trying to do is to order this shit from one store instead 0 going to 4 different places and paying for shipping 4 times - when shipping is more then the parts are...

i cant believe that one store like digikey would not have all thats left to buy



This is usually how it is unless you buy kits, you will have to get parts form different sources. I usually do Tayda , Mouser and Smallbear and then still end up buying things like jacks, and power connectors in bulk from other places.

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Post by peteone » Thu Jul 14, 2016 2:28 pm

:bang:

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Post by peteone » Thu Jul 14, 2016 2:43 pm

Ok so with these-

VR1 1MA
VR2 50kA
VR3 50kB
VR4 50kB
VR5 50kA
VR6 50kA
VR7 50kB
VR8 50kB

Alpha 9mm vertical pots
Smallbear SKU: 1012A
http://smallbear-electronics.mybigcomme ... -pc-mount/

I see 3 different types for 50k potentiometers. Since I have to order 3 A's and 4 B's - which ones am I looking at from the pull down menu
?

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Post by synthetek » Thu Jul 14, 2016 2:51 pm

4 X 50K Linear

3 x 50K Audio

1 X 1M Audio

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Post by peteone » Thu Jul 14, 2016 4:34 pm

synthetek wrote:4 X 50K Linear

3 x 50K Audio

1 X 1M Audio
cool thanks, just curious what is this REV Audio they have on the pulldown?

I have also updated Original post, and will continue with questions about couple more parts left out..in the next post

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Post by guest » Thu Jul 14, 2016 4:45 pm

that stands for reverse audio. basically the resistance goes down instead of up as you turn it. with a linear taper pot you can just wire it backwards to get this effect, but as an audio pot has a log taper, you cant do that so easily.
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Post by synthetek » Thu Jul 14, 2016 4:49 pm

peteone wrote:
cool thanks, just curious what is this REV Audio they have on the pulldown?

I have also updated Original post, and will continue with questions about couple more parts left out..in the next post
Its another type , reverse logarithmic taper or Anti-log. If a BOM says C50K (or C and a different value) it means reverse logarithmic.

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Post by peteone » Thu Jul 14, 2016 5:02 pm

what about headers and connector for power cable?

I don't see any at Small Bear but MCM has bunch I just dont know which one is right i rather buy one long female and one long male and then divide them if you can do that... here is all of them http://electronics.mcmelectronics.com/s ... er&x=0&y=0

so lets say 2 of these http://www.mcmelectronics.com/product/83-15404 (can they break off? so i can do 10 x 3P and 1 x6P ?)

and one of these http://www.mcmelectronics.com/product/28-17704
(and break them off to same sizes)

Is this the correct spacing for both of them?

POWER:

I see Erthenvar has the one for power http://shop.erthenvar.com/products/shrouded-header

and the ribbon cable
http://shop.erthenvar.com/products/power-ribbon-cable

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Post by guest » Thu Jul 14, 2016 5:24 pm

the mouser cart had all of the SIP female and male headers on it. it didnt have the power connectors, though. the pacemaker board is pretty cramped with parts, so a shrouded power connector doesnt fit so well. it can be made to fit, if you really want to have a keyed connector on there. otherwise, a nonshrouded will work as well, youll just have to make sure you put the cable on the right way.
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Post by peteone » Thu Jul 14, 2016 6:17 pm

guest wrote:the mouser cart had all of the SIP female and male headers on it. it didnt have the power connectors, though. the pacemaker board is pretty cramped with parts, so a shrouded power connector doesnt fit so well. it can be made to fit, if you really want to have a keyed connector on there. otherwise, a nonshrouded will work as well, youll just have to make sure you put the cable on the right way.
ok cool ill update

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Post by peteone » Thu Jul 14, 2016 6:27 pm

I think I got it all , can you please take a look at the first post and confirm all is there to build this module.

maybe add a link for decent wire

Thank you

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Post by peteone » Fri Jul 15, 2016 12:39 pm

can anyone who build xox-heart euro take a quick look at the first post and see if I'm missing anything?

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