[ORDER] Euclidean Circles - LEDs with rhythm

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strathTerrace
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Post by strathTerrace » Tue Oct 08, 2019 3:53 pm

I will double check the SMT header. Could it be that I have cheesy LEDs? It definitely was fiddly to solder those little suckers on there. Is it possible that I roasted them with my soldering iron? I was afraid to use my hot air gun and soldering paste for fear of melting the lens.

I ordered these from Amazon:
https://www.amazon.com/gp/aw/d/B00YC7ZX ... asin_title

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av500
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Post by av500 » Tue Oct 08, 2019 4:50 pm

it could be that the very first LED is dead, then the chain is broken.

what you can try is to use a jumper wire and try to pass the signal to one of the LEDs further down the chain and see if you get some light.

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strathTerrace
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Post by strathTerrace » Thu Oct 10, 2019 11:28 pm

Okay, I finally got around to goofing with jumpers. On LED 1, when I bridge pins 2 and 3 the next five LEDs light up. I tried bridging other LEDs in various ways and sometimes LED 1 would get a blip.

So what to do? I guess I'll try reflowing the LED's with lots of flux and see what happens. Then, if that does not work, I guess I'll serially replace them until I get a continuous chain...

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Post by av500 » Mon Oct 14, 2019 7:29 am

strathTerrace wrote:Okay, I finally got around to goofing with jumpers. On LED 1, when I bridge pins 2 and 3 the next five LEDs light up. I tried bridging other LEDs in various ways and sometimes LED 1 would get a blip.

So what to do? I guess I'll try reflowing the LED's with lots of flux and see what happens. Then, if that does not work, I guess I'll serially replace them until I get a continuous chain...
start with reflow/replace of LED1, then see how far you get.

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strathTerrace
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Post by strathTerrace » Mon Oct 14, 2019 11:48 pm

Okay - I started by replacing LED one and bingo! The next 5 LEDs lit up. Then I reflowed the sixth and the entire first circle and a few of the second were good. Woot!

So then I tried reflowing another in the second circle and no luck. So I decided to replace it... and popped off two of the solder pads from the board. Snap! Lesson learned - I should have added a drop of fresh solder to get it loose and then gently lift the LED off the pads.

So back to the drawing board. I'll have to order new set of boards and have another go at getting the LEDs carefully soldered on the top board. I'm glad the "brain board" was good.

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sir stony
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Post by sir stony » Tue Oct 15, 2019 1:03 am

No way of fixing new contacts with some wire wrap? I'd try that, first. A fresh panel will of course look nicer in the end. Soldering the leds was something of a challenge even for me, and that is part of my job. These little buggers are really sensitive to overheating.

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Post by av500 » Tue Oct 15, 2019 5:26 am

yeah, I'd use a wire fix too

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strathTerrace
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Post by strathTerrace » Sat Oct 19, 2019 2:15 pm

Hmm...

not sure what you mean. I can repair the board with wire wrap? What is wire wrap. If that's a thing can you point me to some reading/video material to check it out? Thanks.

Or do you mean I can chain together the LEDs by using a wire lead between them? I thought of trying that, but have not yet given it a shot.

I popped off the solder pads for pin 2 and pin 3. Would I run a wire from pin 1 to pin 2 of the new LED, then a wire from pin 2 to pin 3 and so on?

Cheers

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ratcheting?

Post by matjinks » Thu Jan 16, 2020 1:08 am

Hi There, I love my EC and switches, but one thing I would really love to see implemented in a future software update would be Ratcheting, its the one thing that makes me consider selling my EC for another trigger module, or at least buy another module along side EC which would be annoying for $$ and HP, is it possible?


Mathew.

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av500
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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Fri Jan 24, 2020 12:47 pm

ratcheting how? per circle? per step?

the issue is not adding features, it's the user interface around them that's the hard part...

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by lisa » Mon Jan 27, 2020 4:02 pm

Got mine today and Jesus! You get a full beat going in seconds. :woah: Good first impression. I’ll look into all the hidden settings tomorrow.
Remorseless modular beat; a bit discordant but melodic too. 🦊🦂


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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Tue Jan 28, 2020 3:04 am

enjoy! :)

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by gwpt » Tue Jan 28, 2020 5:10 am

HI, Just finished building by 1st Euclidean 2 and have a couple of issues:
PCB version = 2.0.5d

* none of the leds are lighting up at all in the rings..
* And the top encoder light is not lighting up (the bottom two are, and seem functional)

I've visually inspected everything and can't see any errors (there was a solder bridge on the MCU but removed that)

Could the fact none of the rings work means I got the wrong parts?

This was the chips:
https://www.ebay.com.au/itm/10-PCS-WS28 ... 2749.l2649

These were the leds:
https://www.ebay.com.au/itm/50PCS-Hot-W ... 2749.l2649

Any tips on how to debug?
Thanks

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av500
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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Tue Jan 28, 2020 5:23 am

WS2811 is the right chip for the encoders, if the top encoder is not working then the there is an issue with the top WS2811, check the orientation and soldering. once you fix that one, the circles should also work, since the LEDs are all connected in a chain and they circles come right after the top encoder...

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by gwpt » Tue Jan 28, 2020 5:28 am

I just replaced the top chip. no changes.
Are the schematics available?

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av500
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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Tue Jan 28, 2020 5:31 am


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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by gwpt » Tue Jan 28, 2020 5:52 am

mate, you're a genius, pin 5 is was! :) thanks a lot

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by gwpt » Tue Jan 28, 2020 6:14 am

I am about to finish my second one.
Can i use a heat gun and solder paste on the leds in the ring? Or will that melt them?
Anyone tried?

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av500
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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Tue Jan 28, 2020 6:26 am

I never did, but I know that some people did, cannot tell you what will happen...

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by gwpt » Tue Jan 28, 2020 8:01 am

I just did it. i.e. heat gun and paste and it came out MUCH better than soldering by hand.
No fogging of the lens. looks great.
Thanks for a great module

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by Mr.Username » Sat Feb 01, 2020 5:25 pm

Greetings,

I just put together my Euclidean Circles v2.

I mistakenly put the JP2 on backwards, so I made a big of a mess of the back trying to desolder and putting it back on to the correct side. Sorry for making such a nice board so ugly!

When I turn it on it looks like only the bottom encoder is flashing like it should and only the top LED is working.

If some one, perhaps AV500, could offer advice on how to move forward fixing this wonderful module!

I am really looking forward to getting it going!

Dan
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av500
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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Sun Feb 02, 2020 10:00 am

1) the leds are all connected in a chain, look at the last working/first nonworking one and check the soldering of all 4 pads

2) you are using way too much solder, get thinner solder wire, something like 0.3mm

3) clean up all that excess solder around JP2

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Sun Feb 02, 2020 10:12 am

4) the RGB LEDs are easily damaged by too much heat, seeing all the burn marks you did on the LED housings I guess your solder iron tip also a bit on the too large side.

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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by Mr.Username » Tue Feb 04, 2020 9:20 pm

Dear AV500

Greetings!

I have my Zero scope all working!

I am working on fixing the LEDS on my Euclidean Circles....

While I was doing this I had flux on the back of the board and was using a heat gun to reflow the solder as that is what fixed the problem with the Zero Scope.

Since that the LEDS on the encoders stopped working.

One set forwards, one step backwards.

One of the legs of IC5 is clearly damaged, past this I can't find the problem.

Thank you for any help you can provide!

Dan
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Re: [ORDER] Euclidean Circles - LEDs with rhythm

Post by av500 » Wed Feb 05, 2020 3:47 am

IC5 has nothing to do with the RGB LEDs, its for reading the encoders.

the LEDs on the encoders are driven through the WS2811 IC, starting at the bottom one, see schematics. if none of the RGB leds light up also check IC9 its between the CPU and the 1st WS2811

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