Raspberry Pi Displays | adafruit | Page 1

narrow robin Sep 2, 2021, 11:43 PM

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Right.... I just automatically assumed @ocean path meant a Raspberry Pi 4....

heavy bobcat Sep 3, 2021, 1:29 AM

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Are we counting SPI/I2C displays?

narrow robin Sep 3, 2021, 1:53 AM

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heavy bobcat Are we counting SPI/I2C displays?

IDK - @ocean path just said "How many displays can a RPI drive??

heavy bobcat Sep 3, 2021, 1:54 AM

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Olivia, we need details on your question :O

narrow robin Sep 3, 2021, 1:55 AM

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#help-with-linux-sbcs message

heavy bobcat Sep 3, 2021, 1:57 AM

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Ahh... Yeah, I2C is probably the best option there, since they don't need to be high resolution to show a small piece of an image, and high res of HDMI displays at a small scale would be lost

narrow robin Sep 3, 2021, 2:00 AM

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Yeah.... Maybe you could do that with your 50-camera 3D scanner to display all your images that were taken - LOL

heavy bobcat Sep 3, 2021, 2:03 AM

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XD

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I think Olivia was talking about 1 image spread out, not a bunch of images spread out on a bunch of displays XD

ocean path Sep 3, 2021, 2:19 AM

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That's exactly what I mean

heavy bobcat Sep 3, 2021, 2:19 AM

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:D

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So yeah, I2C, you could have a bunch of 128x32 or 128x64 displays that each get their own little image to display

ocean path Sep 3, 2021, 2:20 AM

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what's the max resolution and framerate?

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i was thinking about the viability of a jacket with a bunch of screens stiched into it (since there aren't any flexiscreens that would bend well)

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as like an idea to show say a message or an image that could change

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protest art, etc

heavy bobcat Sep 3, 2021, 2:22 AM

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I think the highest I2C displays I've seen are like 256x256? Not sure about frame rate... As for how big of an overall image; that depends on your controller, how much RAM it has, storage... Displaying that many images from one MCU might be too much

narrow robin Sep 3, 2021, 2:22 AM

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ocean path i was thinking about the viability of a jacket with a bunch of screens stiched i...

That's what I thought you meant to do

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YAY

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One point for me

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LOL

heavy bobcat Sep 3, 2021, 2:22 AM

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lol

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If you have a 4x4 grid of 128x64 I2C displays, that's an effective resolution of 512x256

narrow robin Sep 3, 2021, 2:24 AM

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heavy bobcat I think the highest I2C displays I've seen are like 256x256? Not sure about fram...

How about a Beaglebone or something??

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As a controller

ocean path Sep 3, 2021, 2:24 AM

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heavy bobcat If you have a 4x4 grid of 128x64 I2C displays, that's an effective resolution of...

would that be the max? 16 displays like that?

heavy bobcat Sep 3, 2021, 2:24 AM

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narrow robin How about a Beaglebone or something??

Yeah, Beaglebone, Pi, or multiple MCUs... I have no idea how many I2C displays can be driven together

heavy bobcat Sep 3, 2021, 2:25 AM

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ocean path would that be the max? 16 displays like that?

I'm honestly not sure how many you could do at once. The bigger you get, the more issues you can have -- there's the memory required to drive all displays, power, I2C address space...

ocean path Sep 3, 2021, 2:25 AM

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i guess it wil have to be something I need to learn and experiement with

narrow robin Sep 3, 2021, 2:25 AM

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@cosmic talon says "Depends on the type of display interface. It could drive a hundred if they're simple I2C ones, for example."

heavy bobcat Sep 3, 2021, 2:25 AM

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ocean path i guess it wil have to be something I need to learn and experiement with

Yeah, you might want to start with like, 4 displays and then grow from there

ocean path Sep 3, 2021, 2:26 AM

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