Sean Meighan
Hardware => General hardware => Topic started by: rickswa on July 29, 2018, 10:44:28 AM
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Hi All,
I posted this on another forum site but just wanted to get all the input/suggestions I can. I've finished putting together my ws2811 megatree for this year, but have a problem with flickering when on full white. It seems to be full strings and sections rather than a single pixel or one pixel causing down the line issues. The tree is 36 strands of 60 pixels per string, divided up into 6 string sections. I think the issue I have created for myself is one of grounding. I had horrible flickering on all white but then rather than one ground wire between each psu (I use 3), I went back and connected each v- output via a terminal block and that seemed to help a bit. I think the problem I created was that I ran the controller power and data to string one and two, then I cut both the v+ and v- on string three but ran the data uninterrupted thru to string six. On string 3 I soldered in a 2 core pigtail that connects v+ and v- to the psu distro board and then at the end, on string 6 I used a 3 core extension from the distro board to connect v+ and v- (data line not used). I've been told that the issue could be the interruption of the ground between strings 2 and 3. If this is likely to be the case, does anyone have a solution other than cutting apart the tape, shrink tubing, and soldering and putting the ground back to the 3 core connection on string 3? I probably didn't explain it the best, but I've attached a photo of the two setups I have since some sections of 6 strings use the same psu but some use one psu for stings one and two and another for stings 4-6. Would my cutting of the ground most likely be the issue? Thanks for any help you can give me.
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You must continue the ground and data.
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also how long are your wires what gauge and the voltage On mine the thicker the wire the shorter I it aloud me to run.
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thank you very much for the replies. It looks like this was a self inflicted headache (as most of mine are). I broke down and at the strings where I cut and injected both the v+ and v-, I went back and soldered the v- back to the "sting to string" connection with the data so that only the v+ was being injected in that area. The seems, for now, hopefully to have solved the issue. I thought that yesterday too but so far it really seems stable with no flickering. As far as the gauge wire, I used ray wu's 5' 18ga extensions and just cut one end off to attach to the distro board for injection. thanks again for the replies and hopefully this will stay stable for me.