xxx1 35 Posted March 4, 2014 Share Posted March 4, 2014 @@cubeberg I have not decided on a power supply yet but I was looking for something similar to this: Let me know what you think. Quote Link to post Share on other sites
greeeg 460 Posted March 4, 2014 Author Share Posted March 4, 2014 If someone who has completed their ring could run it from a benchtop power supply and give us some current readings. If not all the segments are going to be lit a simple USB phone charger should work. I have been informed that my controller segment PCB has shipped. Hopefully it will all work. I'll be able to ship any spare PCBs to anyone who wants them. bluehash 1 Quote Link to post Share on other sites
xxx1 35 Posted March 4, 2014 Share Posted March 4, 2014 @@greeeg I'm completing my ring and I will post some photos and current readings as soon as possible. I would love a controller segment PCB if it's available. Quote Link to post Share on other sites
dubnet 238 Posted March 4, 2014 Share Posted March 4, 2014 I would also love to have a controller segment board. Really appreciate the offer. Quote Link to post Share on other sites
t0mpr1c3 91 Posted March 4, 2014 Share Posted March 4, 2014 @@greg I would love one, and I am also happy to distribute to folks in the USA. Quote Link to post Share on other sites
greeeg 460 Posted March 4, 2014 Author Share Posted March 4, 2014 In order to maintain fairness I'll contact you guys in the order which you expressed interest, once the boards have arrived. Knowing Australia post that's probably about 2 weeks from now. Quote Link to post Share on other sites
greeeg 460 Posted March 6, 2014 Author Share Posted March 6, 2014 I received my set of LEDs and PCBs from the group buy yesterday. I've soldered up one ring. I have errata for a new version. The pieces go together reasonably well. I didn't account for any milling error, which I will in a new revision. This will give a nicer fit. The silk screen for the LEDs should be updated, I found it difficult to center the LEDs on the footprint. The new silk should show the square shape of the LED, not just the notched corner. The edge connectors could be brought closer to the edges. also made longer. Through hole vias connect directly to the polygon pours rather than with 4 traces, (the way SMD pads do) Modify the OSHW logo, (remove soldermask) Move silkscreen text around. They're all small things, mostly aesthetics. for anyone looking at mounting their rings using the holes. M3 screws have a nice, lose fit. But the head has very little clearance over some of the LEDs pins. Maybe use tape or paper under the screw head to avoid shorts. I have found that these button head hex screws work the best, they're lower profile than the Phillips head M3 screws that I have on hand atleast. bluehash 1 Quote Link to post Share on other sites
greeeg 460 Posted March 6, 2014 Author Share Posted March 6, 2014 Found another errata. 1 led isn't concentric with the rest in it's ring. Directly under the OSHW logo Sorry about the error guys. fix: Solder LED with slight offset. bluehash 1 Quote Link to post Share on other sites
bluehash 1,581 Posted March 6, 2014 Share Posted March 6, 2014 That is what small batches are for. Nothing that cannot be fixed. If possible, can you edit your first post with the issues found, that way, if anyone asks, it is easy to direct them. It also serves as version history. Thanks @@greeeg greeeg 1 Quote Link to post Share on other sites
cubeberg 540 Posted March 6, 2014 Share Posted March 6, 2014 @@greeeg - I soldered mine on Saturday (will post pictures soon) - I honestly didn't have any trouble. I had better luck with hand-soldering vs reflow - but I don't have a stencil and kind of suck at reflow so far I had no problems with the milling - I soldered mine based on the 3d printed frame I was working with anyway, so there's a bit of a gap between each segment - it still looks great from the front. I'm working on printing a new frame - had to do some printer maintenance to fix some problems - should be able to print it out tonight. This thing is gorgeous - I even got a "wow" from my wife - that's impressive. The only thing I noticed - the LEDs appear to be organized counter-clockwise - unless it's just the demo code I found for Energia... Minor thing to work around though. greeeg and bluehash 2 Quote Link to post Share on other sites
greeeg 460 Posted March 6, 2014 Author Share Posted March 6, 2014 That is what small batches are for. Nothing that cannot be fixed. If possible, can you edit your first post with the issues found, that way, if anyone asks, it is easy to direct them. It also serves as version history. Thanks @@greeeg Okay shall do. None of these errors are deal breakers. Not like any footprints are reversed or anything. @@greeeg - I soldered mine on Saturday (will post pictures soon) - I honestly didn't have any trouble. I had better luck with hand-soldering vs reflow - but I don't have a stencil and kind of suck at reflow so far I had no problems with the milling - I soldered mine based on the 3d printed frame I was working with anyway, so there's a bit of a gap between each segment - it still looks great from the front. I'm working on printing a new frame - had to do some printer maintenance to fix some problems - should be able to print it out tonight. This thing is gorgeous - I even got a "wow" from my wife - that's impressive. The only thing I noticed - the LEDs appear to be organized counter-clockwise - unless it's just the demo code I found for Energia... Minor thing to work around though. I hand soldered mine. Just the single pin tack down, make sure they're all flat, then solder the rest of the pins. You can notice in my last photo that the PCB on the left is slighty(~.5mm) higher. It's not a big deal at all, and could just be my slack soldering haha, thanks Yeah, the leds are arranged in 2 CCW rings. Honestly I have no idea why I made them CCW. looking at it now CW would have made the traces shorter between each LED. It's not such a big deal, just a SW thing. The whole ring has to be updated in one block anyway. cubeberg 1 Quote Link to post Share on other sites
cubeberg 540 Posted March 6, 2014 Share Posted March 6, 2014 @@cubeberg I have not decided on a power supply yet but I was looking for something similar to this: Let me know what you think. @@pyrosster - I saw those - I didn't like that the contacts for the AC were bare - not something I'm going to want sitting out in my house. @@RobG might have some ideas though - I know he's run larger panels of WS2811's. Quote Link to post Share on other sites
RobG 1,892 Posted March 6, 2014 Share Posted March 6, 2014 I am using two types, the one mentioned above and the enclosed type, like this one. For this project, I think the second one is more appropriate, but it should be closer to 40W (8A) Quote Link to post Share on other sites
t0mpr1c3 91 Posted March 6, 2014 Share Posted March 6, 2014 This one maybe? http://www.ebay.com/itm/AC-100V-240V-Converter-Adapter-DC-5V-8A-40W-Power-Supply-Charger-DC-5-5mm-New-/350794968653?pt=US_Server_Power_Supplies&hash=item51ad026e4d Quote Link to post Share on other sites
dpharris 13 Posted March 8, 2014 Share Posted March 8, 2014 Just received my set of pcbs and LEDs in Canada. Thanks! Quote Link to post Share on other sites
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