DIY 4ms SMR

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Staticcharge
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Re: DIY 4ms SMR

Post by Staticcharge » Thu Mar 05, 2020 10:58 am

autodafe wrote:
Wed Mar 04, 2020 12:04 pm
Il will try to swap mine with one of my friend while he's not wathcing ;-)
No, we didn't have the occasion to catch up, he lives opposite to me in south Milan, we will probably meet in the weekend for a "debug and beers" session ;-)
Sounds good and good luck.
With the wealth of knowledge found on Muffs I'm sure collectively, it will get sorted out.

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Re: DIY 4ms SMR

Post by steviet » Fri Mar 06, 2020 10:15 pm

Staticcharge wrote:
Tue Mar 03, 2020 11:59 am
steviet wrote:
Thu Feb 27, 2020 6:32 pm
Image Image

Thanks everyone for this thread and 4ms for being such a good dude. Good stuff all around, this thing really does sound beautiful. Almost worth hand soldering all those passives :omg:

Apologies for the fingerprinty-fluxxy-front panel I excitedly took a picture of when it booted properly.


---
WEIRD. THIS WAS MY 100th post. It all culminated to this...
Soldered by hand...I take my hat off to you sir and raise a glass...
Did you use the iBOM?
Has anyone used the iBOM yet?
I'm too nervous to bake a board for reflow and too cheap buy a rework station...so hand soldering is the only choice. But thank you kind sir, cheers on that one!

And thank you for the kick in the ass I needed to get this project going. I love my SMR, especially for percussive sounds.

As far as the iBOM I used it as well as the BRD files in EAGLE. The iBOM was super helpful for visual inspections in a way that EAGLE just can't be. Thank you for that!
autodafe wrote:
Wed Mar 04, 2020 12:04 pm
Il will try to swap mine with one of my friend while he's not wathcing ;-)
No, we didn't have the occasion to catch up, he lives opposite to me in south Milan, we will probably meet in the weekend for a "debug and beers" session ;-)
I've got faith! We expect either your own working board, or your pilfered board in this thread on Monday :yay:
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Re: DIY 4ms SMR

Post by Staticcharge » Sun Mar 08, 2020 5:28 am

I so glad the iBOM opens this module up to DIYers that would have normally given it a go. We are blessed with the permission of the designer and it is quite a challenge, even with the iBOM. It made me sit down with vagrant and figure that out, even if it is just to write HEX files.
I use a hot plate and they can be picked up from Ebay for £50 or so and well worth a look. I'm not a fan of the oven, there's little you can do if you see components out of alignment. At least with the hot plate you can give them a nudge, I use this: https://www.tindie.com/products/danm/dm ... dispenser/

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Re: DIY 4ms SMR

Post by steviet » Sun Mar 15, 2020 11:13 am

That's a great idea, I will try hotplate before I grab a rework station.

Also, shameless self plug, wrote a little blog on my build experience:

https://www.stevetravale.com/4ms-smr-build-diary-9/

Any feedback would be much appreciated! I don't think anyone really reads this sort of content anymore... should I start making videos to go along with the blogs? I JUST WANT READERS.
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Re: DIY 4ms SMR

Post by djthopa » Sun Mar 15, 2020 1:16 pm

Thanks for the blog, the smr is next on my build list.
Much appreciated :party:

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Re: DIY 4ms SMR

Post by Staticcharge » Tue Mar 17, 2020 3:11 pm

steviet wrote:
Sun Mar 15, 2020 11:13 am
That's a great idea, I will try hotplate before I grab a rework station.

Also, shameless self plug, wrote a little blog on my build experience:

https://www.stevetravale.com/4ms-smr-build-diary-9/

Any feedback would be much appreciated! I don't think anyone really reads this sort of content anymore... should I start making videos to go along with the blogs? I JUST WANT READERS.
Fantastic build blog.
I use this heat plate:
https://www.ebay.co.uk/itm/946C-Electro ... SwR9Nd360h
And the solder dispenser in the previous post. I recommend the heat plate over a rework station because the blower can be a pain if you get it wrong as you'll end up blowing components all over the place.

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Re: DIY 4ms SMR

Post by steviet » Tue Mar 17, 2020 3:17 pm

Thanks for the feedback and comments! They truly made my day(s).

And that's great, I think I will take this route for the SWN when it happens...and I'll be sure to blog about it!! :omg:

Thanks again, I will continue to update the blog every Sunday!
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Re:

Post by Brennanib » Wed Apr 08, 2020 9:03 pm

sempervirent wrote:
Fri Mar 18, 2016 5:35 pm
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-davi ... one-metal/

Image

Anyone know where to get fader leds like these for the smr? Would love to know a source with the correct resistance!
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Re: DIY 4ms SMR

Post by djthopa » Thu Apr 09, 2020 5:00 am

I seem to recall the resistance of the faders are not critical as they act as voltage dividers, please do correct me if im wrong.
This are the ones i got, but bare in mind i have not build mine yet.

https://www.mouser.es/ProductDetail/312-2045F-G50K

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Re: DIY 4ms SMR

Post by Brennanib » Sun Apr 12, 2020 4:09 pm

djthopa wrote:
Thu Apr 09, 2020 5:00 am
I seem to recall the resistance of the faders are not critical as they act as voltage dividers, please do correct me if im wrong.
This are the ones i got, but bare in mind i have not build mine yet.

https://www.mouser.es/ProductDetail/312-2045F-G50K
Nice these look good!

Just looking for the leds themselves already have a built SMR :)
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Re: DIY 4ms SMR

Post by steviet » Mon Apr 13, 2020 9:11 am

I don't think the fader pot's LEDs can actually be multi-colored, I think that is just a liberty the designer took when creating that front panel shot. If that's what you're referring to of course!

The fader LEDs can be a single color that fades in/out depending on the sliders position to my knowledge. The pots that were just posted have green LEDs!
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Re: DIY 4ms SMR

Post by Brennanib » Mon Apr 13, 2020 10:32 pm

steviet wrote:
Mon Apr 13, 2020 9:11 am
I don't think the fader pot's LEDs can actually be multi-colored, I think that is just a liberty the designer took when creating that front panel shot. If that's what you're referring to of course!

The fader LEDs can be a single color that fades in/out depending on the sliders position to my knowledge. The pots that were just posted have green LEDs!
They have multi color ones, I’ve ordered a few in fact but they were the wrong size as well as brightness.

Ex

1x Red
1x Yellow
1x Blue
Etc
Etc

I’m just talking about a single color led but one of each color. Not multi colored single fader leds.
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Re: DIY 4ms SMR

Post by steviet » Tue Apr 14, 2020 10:48 am

Ahhh gotcha, that's a cool idea though. Different LED on each fader would make for a killer look.
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Re: DIY 4ms SMR

Post by d.simon » Tue Apr 14, 2020 10:54 am

the led's on those sliders can be replaced with other color "square leds" . find them on ebay. I think the actual led dimensions is the same as the ones on the TTSH (info in those threads...people change led color of their sliders on TTSH). You might have to change some led series resistors to match brightness.

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Re: DIY 4ms SMR

Post by RogueWarrior » Sat Apr 18, 2020 1:31 am

Now I know this is an Old Thread, but I want to get me one of these, Where can I find a Link to a PCB!

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Re: DIY 4ms SMR

Post by adam » Sat Apr 18, 2020 4:42 am

you'll have to get one made yourself if you don't want to support someone selling them illegally

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Re: DIY 4ms SMR

Post by n82558 » Sat Jun 06, 2020 11:03 pm

Hello, does anyone have a panel file for the SMR? looking to laser cut one to match other modules in my case. Thanks!

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Re: DIY 4ms SMR

Post by n82558 » Mon Jun 08, 2020 7:03 pm

Found one a few pages back from another user, sharing their link here for anyone else looking:
https://www.dropbox.com/s/6cv906bphnj64lk/SMR.zip?dl=0

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Re: DIY 4ms SMR

Post by Staticcharge » Thu Jun 18, 2020 2:28 am

autodafe wrote:
Fri Feb 28, 2020 4:22 am
I'm getting mad on a couple of boards I ordered 99% pre-populated from JLC (I only soldered all TH components, all led drivers ICs, and a couple of capacitors..which I have now desoldered)
Electrolytis where presoldered and I removed them 'cause they didn't look like well soldered...

one of the two boards is shorted, it won't even power up
the second one seems better. I was able to boot it, I programmed the chip with my ST-Link, no complaints...
but when I turn it up the CPU becomes hot as hell after 5 seconds and of course nothing works.
I have checked and there are shorts to GND on this as well...
In particular ALL transistors have their 2 "parallel" pins shorted.

Here are some pics of the shorts I have...It could be anything.but what?
(yellow circles of course means shorted together to GND)

Image

Image
Did you manage to sort these out? I just notice that the VF4 little black box in this picture is the wrong way round.

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Re: DIY 4ms SMR

Post by autodafe » Thu Jun 18, 2020 5:47 am

well, It looks like it's off centered but I believe it was in the right orientation...
however, I removed many components (then black box as well) and finally decided to desolder the MCU. it's shorted on a couple of ins between GND and 3.3V. I ordered a new one and I need ro resolder it...I will triple check the black DC-DC converter this time

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Re: DIY 4ms SMR

Post by AlanP » Wed Aug 26, 2020 6:47 pm

For the QVAL pot, the silkscreen says 10k. The component value says 100k.

Any difference?

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Re: DIY 4ms SMR

Post by KittenVillage » Sun Aug 30, 2020 1:10 am

AlanP wrote:
Wed Aug 26, 2020 6:47 pm
For the QVAL pot, the silkscreen says 10k. The component value says 100k.

Any difference?
I believe it is 100k.


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Re: DIY 4ms SMR

Post by strewya » Thu Sep 17, 2020 7:48 am

Hello,


My module does this on start up and then not life. Does anyone know what it means?



It flashed without any problems. Is it necessary to solder all through whole component for module to function properly ? Any help would be much appreciated. Thanks

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Re: DIY 4ms SMR

Post by gigala » Sun Sep 20, 2020 4:16 pm

Hey,

I bought an assembled DIY-kit of the SMR, third hand, and as I learned how the module works I found it has two issues.

The first issue appears in the v/oct. mode. All outputs track pitch as they should, except the 2nd output, wich raises the pitch sluggy and it doesn't fit the choosen scale on the SMR.

The second issue I found just today, and it wasn't there always, appears on the 3rd env./v/oct. output respectively the 3rd band. As I turn the rotate-knob it changes it's pitch/position within the choosen scale as it should. As I turn the spread-knob it's holding it's pitch instead of changing it's position respectively it's pitch.

The firmware is updated to version 5.1.1 just today.

Does anybody of you have a clue what could cause these issues and how to solve it? I should mention that I have no idea of how to solder modules, neither of all the technical aspects related to individual parts.

Thanks for reading to the end, Jan (:

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Re: DIY 4ms SMR

Post by pjbulls » Sun Sep 27, 2020 2:30 pm

Looking at the design files just about all traces on this PCB are 5 mils, including power and ground (no pour)? I suppose it works, but that seems pretty meager... and it puts you in a more expensive design bracket at most fabs :hihi:

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