Sean Meighan

General => Lights => Topic started by: ttwiss on December 05, 2016, 12:12:52 PM

Title: WS2811 strand won't come on
Post by: ttwiss on December 05, 2016, 12:12:52 PM
I'm hoping someone will have some insight for me.  I have one wreath that I have 100 ws2811 pixels on that won't light up.  I am running it off of a sandevices e682.  All of the rest of the show is working except this one wreath.

- Tested the output with another wreath- works fine.
- Checked the fuse- OK
- Tested straight from the sandevices interface- does not come on (all other outputs come on)
- When I first connect it- all the lights flicker so I know it is getting power.

Any chance the pixel data chip is bad on the first pixel??  Any help would be greatly appreciated.
Title: Re: WS2811 strand won't come on
Post by: jnealand on December 05, 2016, 12:16:41 PM
Or could you be connected to the data out side of the string?
Title: Re: WS2811 strand won't come on
Post by: Gilrock on December 05, 2016, 01:02:43 PM
I've seen it be several things.  Yes it could be a bad pixel.  It could be miswired from the manufacturer.  I had one string I saw work this weekend and then after troubleshooting something that string quit working.  I cut out a couple pixels and it still wouldn't work so I can only assume I fried all the pixels somehow.
Title: Re: WS2811 strand won't come on
Post by: ttwiss on December 05, 2016, 01:03:02 PM
I don't think I'm connected to any other data out side of that string.  I switch the input plugs on the e682 and no lights to the problem strand.
Title: Re: WS2811 strand won't come on
Post by: ttwiss on December 05, 2016, 01:08:15 PM
I've seen it be several things.  Yes it could be a bad pixel.  It could be miswired from the manufacturer.  I had one string I saw work this weekend and then after troubleshooting something that string quit working.  I cut out a couple pixels and it still wouldn't work so I can only assume I fried all the pixels somehow.

Yeah it worked just fine when I tested it before connecting the whole display.  I can't figure out what happened!
Title: Re: WS2811 strand won't come on
Post by: ttwiss on December 05, 2016, 02:00:22 PM
I think I may have figured it out!  I replaced the european connector to the e682 and it works again.  Perhaps it wasn't connected properly there.  But now it works.  Now I have to redo my connections that I took apart testing everything. But it should work again!