A Fireplace - Powered by Pixelblaze

Hi, everyone. I’m super excited to share my fireplace project, it came out even better than I imagined. So I moved earlier this year and the new place has a non-functional fireplace that the previous people painted black because….I have no idea. I think they thought it made this 1960’s bungalow look modern or something. Anyway, it was a big black thing in the middle of a room painted white and it was kind of an eyesore. But yanno what black is great at….being a backdrop for LEDs! And it just so happens that the grout spacing between the bricks was perfect for a typical addressable strip. So I got a pile of HDR SK9822 strips, designed a quick flex pcb with brick spacing to connect them all (because fffff snake wiring 23 strips), hooked up a Pixelblaze, and now have a super bitchin LED matrix in my living room. It’s 45 pixels across by 23 high, 1035 LEDs. I’m injecting power into 4 places, after 270 LEDs. The LED data is currently being entirely driven by one Pixelblaze Standard, but after 10% brightness, it starts to glitch. So I’m going to break it up and put a synced Pico in the middle. The 2D patterns look great, and I soldered up a sensor board so it’s also sound reactive. I also had to get the matchstick IKEA lamp so I could have it in the fireplace under the fire patterns. :smile: I’ve also got more build and action videos on my mastodon feed, starting here: Alpenglow Industries (Carrie): "Got an ugly-ass nonfunctional fireplace that some…" - Mastodon 🐘

I’ve still got some buttoning up to do, but this is one of the best things I’ve ever made. It’s really awesome to have a giant LED canvas in my living room, it makes me so happy. Many thanks to @wizard for helping me get the proper mapping and for poking around with adapting patterns. And many thanks to @zranger1 for making some really fantastic 2D patterns.

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Absolutely fire! Do you think you’ll add an sensor extension board and make the wall sound-reactive? Louder you scream, the hotter it gets!

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Already did! One of the photos is the audio spectrum analyzer - it makes singing along to music super fun (my poor neighbors). Making the fire pattern sound-reactive is a good idea, that would be cool, no, I mean, hot!

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This is just so cool. I haven’t seen anyone do that, and running the LEDs in the brick spacing and getting these results is so good.

Really gorgeous build too, custom flex PCBs and everything!

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Thank yoooou! I need to tweak the pad spacing ever so slightly, and then I’ll throw the PCB files up on Github. I think the size of a typical brick is somewhat standard? I’d love to see other builds like this!

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Please see this thread about breaking up with multiple PB, it did not work for rme.

That looks so amazing! Well done!

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Very cool! The form factor is incredible here. There is something really nice about using the existing shape to embed this into.

How deep is the channel between the brick? I’d be super curious about what a diffusion layer would look like over it. I’m starting to like the effect that pixelated diffusion has and this looks like a perfect application.

Very nice work.

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Thank you! Yeeees, it was so satisfying to take something that was kind of ugly and definitely boring and really transform it. I’ll measure the depth when I’m back home, but it’s roughly the same thickness as the LEDs themselves. They don’t protrude from the bricks. At least in this fireplace, your fireplace may vary!

Yeah, diffusion is something I’m going to look into….sometime. :slight_smile: I was talking with Janet Hansen who does amazing LED work in costumes and textiles, and she suggested fabric drapes. I really like this idea because I could choose to have them cover the fireplace, or push them aside if I wanted the pinpoint look. Here are links to Janet’s work if you’re not familiar:

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@maumau The depth of my grout varies between about 7-10mm, so the LEDs are definitely recessed from the front of the bricks. I used the backing tape them come with, so I didn’t add any thickness there.

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