I am building an LED SCREEN for Senior Design using WS2812B LED's. They have been referred to as neoPixels, I have placed them on a salvaged Samsung 72" projection tv.
I am using a
These pixels are arranged in columns of 53 pixels/Strip, and set 112 times across the screen thus forming a 112Hx53W resolution. I have already been able to produce images on screen, with poor refresh rates. I realize that according to timing it takes a minimum of 7.35 HZ or 0.136 ms to replace refresh the screen.
When I mean refresh rate, you must first understand That I am using a Single Column to light the entire screen, SEEMS ILLOGICAL, but that is how tv's work. They must be so fast to zoom across the screen that they seem all on to the naked eye.
I've read that for a normal view there must be at least a 30 to 60 Hz refresh rate for the image or video to look good. I would like to know more about this for most of the websites I visit do not talk about the size of the screen or the pixel-to-pixel distance.
Also for any embedded Sys Engr's I am using a PIC32MZ2048ECM144 as the GPU to send data to each column, as you notice this PIC32 has 120 i/o pins which is perfect for my 112 column application. Though I have noticed that this chip many not be able to do it alone with since the the refresh rate is very slow. I have four spares that I may use, might have to use all of them. Each controlling 28 columns.
And even then I am testing my prototype pic32 with only 28 columns and it look poor. The Pixels do not seem to turn completely on, for each column, looks like a movie made in 1980 digital computer where the lights are random, but seem sophisticated. <-- that is my sci-fi example. More than likely it is just way to fast for the columns to process the data.
I will edit the page as I move forward with my research and implementation.
btw; this is my first forum post, please feel free to ask me any question if your interested in doing something similar. I can answer to the best of my Abilities.
I am using a
These pixels are arranged in columns of 53 pixels/Strip, and set 112 times across the screen thus forming a 112Hx53W resolution. I have already been able to produce images on screen, with poor refresh rates. I realize that according to timing it takes a minimum of 7.35 HZ or 0.136 ms to replace refresh the screen.
When I mean refresh rate, you must first understand That I am using a Single Column to light the entire screen, SEEMS ILLOGICAL, but that is how tv's work. They must be so fast to zoom across the screen that they seem all on to the naked eye.
I've read that for a normal view there must be at least a 30 to 60 Hz refresh rate for the image or video to look good. I would like to know more about this for most of the websites I visit do not talk about the size of the screen or the pixel-to-pixel distance.
Also for any embedded Sys Engr's I am using a PIC32MZ2048ECM144 as the GPU to send data to each column, as you notice this PIC32 has 120 i/o pins which is perfect for my 112 column application. Though I have noticed that this chip many not be able to do it alone with since the the refresh rate is very slow. I have four spares that I may use, might have to use all of them. Each controlling 28 columns.
And even then I am testing my prototype pic32 with only 28 columns and it look poor. The Pixels do not seem to turn completely on, for each column, looks like a movie made in 1980 digital computer where the lights are random, but seem sophisticated. <-- that is my sci-fi example. More than likely it is just way to fast for the columns to process the data.
I will edit the page as I move forward with my research and implementation.
btw; this is my first forum post, please feel free to ask me any question if your interested in doing something similar. I can answer to the best of my Abilities.