hello, I am having some issues with a long (100m) installation of lights.

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hello,

I am having some issues with a long (100m) installation of lights. Once every few minutes, I’ll get a “blink” in my lights… it lasts usually less than a second, then goes back to the solid color I programed.

I have added power every 5meters, have common grounds, and have a large enough power supply.

I plan to put capacitors between ground and voltage of each inlet, but I also heard about putting a 1k resistor between the clock and data line at the end of the run, but can’t find the source now. Is that advisable?

I also am using a level shifter to drive the leds, and I didn’t add decoupling on the board for the level shifter. so could that be an issue?

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I wanted to add: Sometimes it will go a long while with no blinks, and Ill think I’ve solved it. Also, if a turn on a different LED light in my house, the leds will blink every time it is turned on. finally, I’ve just now load the most simplest of code to make sure it’s not something in my code causing the intermittent blinks. So far, no blinks but like I said, some times it takes a while

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Have you tried a shielded data cable? Long data cable runs needs to have a ground shielding according to the consensus around here.

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I have not, but my longest runs for data/clk outside of the strips are all less than one meter

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It seems like it is a interference issue though, because i notice the lights blink when i turn on and off light switch that aren’t even on the same A/C circuit that the PSU is plugged in to.

I am going to get a power conditioner and see if that gets rid of some of the noise.