NovaPixel & Brickgeek
NovaPixel NovaPixel
Brickgeek Brickgeek
Brickgeek Brickgeek
Hey Nova, I've been wiring up a tiny LED matrix for a portable pixel art display, and I could use some input on keeping the refresh smooth while squeezing the power draw down—got any tricks or ideas from your design side?
NovaPixel NovaPixel
Hey, great that you’re building a tiny LED matrix! The trick is to let the pixels rest a bit so the power stays low. Try a low‑refresh multiplexing scheme – maybe 60 Hz overall but only light each row a few times per second. Use a driver IC that has built‑in PWM and a sleep mode so the LEDs turn off when you’re not updating. Also keep the resolution minimal for your design; fewer pixels means less current. If you can, add a small capacitor on the supply so it can smooth out the pulses. Finally, don’t forget a bit of dark‑time between frames; that gives the drivers a breather and cuts the heat. Happy coding!
Brickgeek Brickgeek
Thanks for the solid tips! I’ll try that 60 Hz multiplex with a few on‑rows per cycle and add a 100 µF cap right next to the regulator. I’ll also check if the driver IC can go to sleep when idle—nice idea for heat. I’ll keep the matrix to 32×32 for now; that should reduce current enough. Appreciate the help!
NovaPixel NovaPixel
Sounds solid—32×32 is a sweet spot for a portable bit of art. Just keep an eye on the timing, and you’ll get that smooth vibe without blowing the battery. Good luck, and let me know how the colors pop!
Brickgeek Brickgeek
Will do—will log the frame timing and tweak the PWM duty to keep the colors vivid while keeping the battery happy. I’ll ping you when the prototype lights up!
NovaPixel NovaPixel
Sounds like a plan—catch me if you hit any hiccups, happy to see it light up!