Hey,
Let me introduce myself, I’m management student who just finished university two weeks ago. I have been looking at all the youtube videos and forums and much of the inspirations were from them. My ultimate goal is to make Led matrix (16x16) with w2811 leds playing different animations controllable with bluetooth. Since I’m newbie, I will be documenting all the learning progress along the way on Google plus. So maybe someone on my level can understand.
So starting from below, I have created a prototype of 6x6 WS2811 leds @ 12volts and i have ran the “stradtest” example from adrafruit and all the lights worked well. However the pixels seems to be grouped together. Then I proceed to use Daniel Garcia’s Fastled basic usage. Upon doing the tutorial to turn on one pixel but it turned first three pixel on my strip. Im wondering what is causing this. Im happy to know the cause of this phenomenon and welcome any recommendations for my learning process which of course I would be happy to documented on my google plus.
That really is an interesting strip, as it has 3 pins, but the WS2811 isn’t integrated with the 5050 type LED and it’s 12V at that. Also, your soldering is in serious need of improvement. I recommend boning up on your soldering skills and to use heat shrink tubing. In the meantime, I’d recommend getting a real strip of integrated 5V WS2812B’s or even APA102C’s.
@Mark_Kriegsman Thank you! Glad you like the idea of documenting.
@JP_Roy I just read the seller information regarding WS2811 IC. I have 30 leds with 10 IC per meter then.
@Stuart_Taylor@Nail_ENVY Yes, they are accent lighting. Was thinking of 8x8 or 10x10 which i had in mind as i have 100 (bought two products) of short strips.
@Andrew_Tuline I know! I have a old solder from a friend which tip is very rusted and no longer precise and i had sand it off to able to solder but yes It may be time to get myself a new soldering tool
I’ve seen plenty of 12-volt strips with individual pixel control. These 3-modules-per-controller-chip are just older and/or cheaper, I think.
Me, I’m eagerly waiting for APA102 to be available in more different package options (e.g., pixel nodes on a wire ‘string’, vs flat strip, etc.), so you’re not going to hear me arguing with Mike’s recommendation there. It’s especially important if you want to do anything with interrupts that you go with a “four-wire” chipset (e.g. APA102) instead of a “three-wire” chipset (e.g. WS2811/WS2812/WS281212b). The three-wire chipsets are more sensitive to small timing abberations, which means: interrupts make them go nuts.
