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DIY 4ms SMR
MUFF WIGGLER Forum Index -> Music Tech DIY Goto page 1, 2, 3, 4, 5, 6, 7, 8, 9  Next [all]
Author DIY 4ms SMR
dalhasumai
A guy started a facebook group for PCB group buys and he's sellling 4ms SMR PCBs.
I started sourcing all the parts for a mouser/thonk basket.

GitHub : https://github.com/4ms/SMR
BOM : https://docs.google.com/spreadsheets/d/1KZltEM_g_yhMPhuGk-p82fb1sggsvi 72b_s4ztzFu-s/edit#gid=677579651
I'm not sure about every replacement parts :

- SLIDES (POT-LED) : i see two alternatives but in 50K :
Thonk (red LED...) https://www.thonk.co.uk/shop/music-thing-modular-sliders-for-voltages/
Mouser (not sure about colours) http://www.mouser.fr/ProductDetail/Alpha-Taiwan/RA2045F-20R-15LC-B50K- C/?qs=sGAEpiMZZMtC25l1F4XBU1sVVnjISoIHwkIuboZoxqo%3d
Anyone know about a 100k source ?

- the 5 pots (POTR0904N) seems to be thonk's trimmers https://www.thonk.co.uk/shop/ttpots/

- VR4 (VREG-DCDC) seems to be this one http://www.mouser.fr/ProductDetail/RECOM-Power/R-78E33-05/?qs=sGAEpiMZ ZMt6Q9lZSPl3RdIY%2frU%252b4pgMeDWDw5CejVE%3d if anyone a cheaper alternative, let it be !

- D13,D19 http://www.mouser.fr/ProductDetail/Vishay-Semiconductors/B140-E3-5AT/? qs=tdXsjSi%2fIMaAtxzBb4%252bn2Q%3d%3d same thing here

- S0, S1 : BUTTON-TACT : http://www.mouser.fr/ProductDetail/ALPS/SKQGAKE010/?qs=sGAEpiMZZMsgGjV A3toVBA1UHfTHbV9%252bZVm6oBay0Ts%3d
this one seems ok (i checked the dimensions)

- V-SEL : http://www.mouser.fr/ProductDetail/TE-Connectivity-AMP/4-103321-5/?qs= sGAEpiMZZMs%252bGHln7q6pm97UIqqiSP4A1%2f30GdYnar0%3d

- SWD http://www.mouser.fr/ProductDetail/TE-Connectivity-AMP/827312-4/?qs=sG AEpiMZZMs%252bGHln7q6pm%2f6BrHToExQ4qEBtmg10Mhc%3d

- POWER (SMD !) unshrouded : http://www.mouser.fr/ProductDetail/FCI/54202-T0804LF/?qs=sGAEpiMZZMs%2 52bGHln7q6pm2nKUjHUi6l6YMrkvH7rLdI%3d
shrouded http://www.mouser.fr/ProductDetail/Molex/71349-2036/?qs=sGAEpiMZZMs%25 2bGHln7q6pm8NDWwBzqQCNbGDAWSv%252bzYw%3d

- V1 http://www.mouser.fr/ProductDetail/Fairchild-Semiconductor/KA78L05AIMT F/?qs=sGAEpiMZZMtUqDgmOWBjgALQLVuvJIIysKa1NT5Q0mM%3d

- LED-INCLIP : Dual T1 LED, Common Cathode. I'm stuck on this one, seems to come from Malekko's Eagle library. I can't see what it does on the module... Help !

- 27 jacks : Thonkiconn (thonk soon out of stock !) https://www.thonk.co.uk/shop/3-5mm-jacks/
alternative ? http://modularaddict.com/pj301m12-jacks
or see group buy on pusherman group

- Rotary encoder / button, 12mm. I'm also stuck here. same as braids ?

- MINIUSB : http://www.mouser.fr/ProductDetail/Hirose-Connector/UX60-MB-5ST/?qs=sG AEpiMZZMulM8LPOQ%252bykzmHhzPuOAFGIpscEVPIFWo%3d looks ok

- LOCK switches : looks same as Clouds but not permanent (locked) I have 0 knowledges about DPDT, SPDT style so i won't know if it fits.

- submini SPDTT switches : same here...

Your turn now ! smile
insula
really big thanks for sharing all this information!!

applause applause applause

i was also thinking to buld one 4ms, and now looks more easy with all this deatils

It's peanut butter jelly time!
dalhasumai
Let's do this !
ki0
Could you pass me the facebook group, please?¿ i would like to order some pcbs... Rockin' Banana!

Thank you very much for the info.
dalhasumai
I was told not to share the group link
Please take a moment to check my replacement parts propositions and help me figure out the other ones !
Altitude909
dont forget lightpipes

also: http://www.ebay.com/itm/251176235368

and for the toggle switches, watch the diameter of the legs, the official parts used have tiny leads and finding switches that fit proved a chore. I went with C&K T series but those were really expensive.
d.simon
this work?
http://www.elecrow.com/3mm-led-dual-color-redgreen-common-cathode5pcs- p-377.html

probably not...through hole.

The dual LED is a clipping led for the input. (if the input signal clips)

RE: lock switches. There was a MW thread on this just recently (LP4 switches). Also my "prototype SMR" thread someone asked about it.


Lock switches are momentary : .brd shows "WHITE-MOM"
MOM = momentary (not mother)
d.simon
the LP4 "e-switch" comes up a few times on MW. There are maybe 3 sources of those types of switches (well buying, eswitch, and ?)
d.simon
yes song huei "tall trimmers"

the real crux IIRC is the 100k illuminated sliders. 20mm travel ... right?

On my prototype version I use 100k rotary pots instead (and a separate LED)
sempervirent
I'll have SMR panels in a few weeks, preorders are open until April 1:
http://grayscale.info/panels/4ms-smr/

Also, one small contribution to the parts list... Thonk has the Davies 1900h-style knobs without a pointer line, like the Rotate knob on the factory builds:
https://www.thonk.co.uk/shop/knobs-davies-1900h-clone-metal/

Altitude909
d.simon wrote:
yes song huei "tall trimmers"

the real crux IIRC is the 100k illuminated sliders. 20mm travel ... right?

On my prototype version I use 100k rotary pots instead (and a separate LED)


Dont have to be 100K, I used 50K and those worked fine
dalhasumai
Altitude909 wrote:

Dont have to be 100K, I used 50K and those worked fine

Really ? cause mouser is selling the 50k version
Altitude909
dalhasumai wrote:
Altitude909 wrote:

Dont have to be 100K, I used 50K and those worked fine

Really ? cause mouser is selling the 50k version


Yes. They are not being used as analog anything, just as digital controls. Anything 100k-10k should be ok

d.simon
sweet.

did u know you can use two SMR to do vocoding?
dalhasumai
found this http://4ms.org/?p=285
Altitude909
I didnt even use that brand. I used the Eswitch ones:

http://www.digikey.com/product-search/en?keywords=LP4OA1PBCTG
sempervirent
E-Switch LP4, Well Buying PS004, and Highly PB61303 are all the same switch as far as I can tell. Which one is the original and which two are the clones? Who knows...
dalhasumai
Lightpipes : http://www.mouser.fr/ProductDetail/Dialight/515-1027F/?qs=sGAEpiMZZMuu 2qEGwSNRoPRSjaU6DOcOenyCWaun5uo%3d
not sure about the dimensions
Altitude909
The official ones are these:
http://www.mouser.com/ProductDetail/Bivar/PLP2-350/?qs=sGAEpiMZZMuu2qE GwSNRoI7NaoVtmgDB4Ovik%2fQ6PE4%3d
cane creek
This might give you an idea of whats involved.

Conjure
Good luck. I've hand-built every Mutable project and I still don't want to touch the SMR. Not scared of the ARM or anything. Just the sheer size of the project. The tiny ICs are a little daunting.

Also, I've heard the LEDs aren't long enough on the DIY versions.
cane creek
So how do you order ? do you send the guy a message ? as the Facebook page looks a bit chaotic.
dalhasumai
The guy posts google docs when he's annoucing a new group buy and you fill it with what you need. but try sending him a message, he often have some spare boards.
d.simon
so the lightpipes are friction fit? no glue i assume.

cane creek wrote:
This might give you an idea of whats involved.



its a helpful image but doesn't show lightpipes, as stated
d.simon
Conjure wrote:
Good luck. I've hand-built every Mutable project and I still don't want to touch the SMR. Not scared of the ARM or anything. Just the sheer size of the project. The tiny ICs are a little daunting.


yeah...its amazing how much logic the led ring takes. digital design though.

just due to the amount of I/O there's a few opamps here and there.
the codec and the arm.
several power regulation sections.

that's about it besides passives.
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