https://lsslab.com/guide/troubleshooting/ Recent content in Troubleshooting on Large-Scale LED Pixel Installations Hugo -- gohugo.io en © 2026 LED Strip Studio Fri, 13 Mar 2026 00:00:00 +0000 https://lsslab.com/guide/troubleshooting/troubleshooting/ Fri, 13 Mar 2026 00:00:00 +0000 https://lsslab.com/guide/troubleshooting/troubleshooting/ <h2 class="relative group">Why are my LED pixels flickering? <div id="why-are-my-led-pixels-flickering" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#why-are-my-led-pixels-flickering" aria-label="Anchor">#</a> </span> </h2> <p>Flickering is almost always caused by one of three things: voltage drop, signal integrity problems, or an overloaded power supply. Voltage drop occurs when the cable resistance causes the supply voltage to fall below the LED IC&rsquo;s minimum — adding power injection points mid-strip usually resolves this. Signal integrity problems occur when the SPI cable is too long, picking up noise — use a differential SPI extender or shorten the cable. If multiple LEDs flicker simultaneously at low voltage, the power supply is undersized or shared with other loads; replace with a properly rated dedicated supply. Network issues can also cause flickering: Art-Net packets arriving out of order or too slowly on a congested network create visible frame drops — isolate the LED network on its own dedicated switch or VLAN. Loose connector contacts cause intermittent flickering that worsens when cables are moved.</p>