4 ms·

Unless I'm misreading the page, it is claiming a resolution of 104x78. So that means 8,112 LEDs. The HDSP-2132 is made of 8 character elements, each element ha

by tal8d 6y ago

Unless I'm misreading the page, it is claiming a resolution of 104x78. So that means 8,112 LEDs. The HDSP-2132 is made of 8 character elements, each element has a resolution of 5x7. So a 80x24 terminal would have a resolution of 400x168... 67,200 LEDs. So about a magnitude off, even before ignoring the built in character spacing :)

tyingq 6y ago
I wasn't suggesting one of them would settle the matter. I was suggesting it would be cheaper to use them instead. They are made to be grouped together, and daisy chained to a single controller. I believe each module would be 160 x 120 dots (19,200 dots total) though, based on module size and LED pitch. I'm unclear on where you got 104x78.
- tal8d 6y ago
  > I'm unclear on where you got 104x78. https://www.alibaba.com/product-detail/Hot-sale-small-pitch-led-display_62575493208.html https://www.alibaba.com/product-detail/Hot-sale-small-pitch-... Module Res Size P1.923 104*78 200*150 I went ahead and counted... 128x96 (12,288 LEDs) https://imgur.com/a/4qdY1Pr https://imgur.com/a/4qdY1Pr
  - tyingq 6y ago
    It's just bad pictures and errant info. Here's a better link: https://www.aliexpress.com/item/32965783207.html https://www.aliexpress.com/item/32965783207.html It's 160x120, as I mentioned for a 200x150mm P1.25 led module. You just divide the width/height by the pitch to see the number of dots. As far as I can tell, 1.25mm is the smallest pitch available for these modules.
    - tal8d 6y ago
      lol, I marked every tenth led manually and counted twice - the number is correct, the marketplace is wrong. https://imgur.com/a/NqVXtDd https://imgur.com/a/NqVXtDd https://www.mblock.com.tw/upload/Investor/events/2020/20200805_C.pdf https://www.mblock.com.tw/upload/Investor/events/2020/202008...
      - tyingq 6y ago
        You counted dots on a picture of something other than a "200mmx150mm P1.25 led module". Pitch is the distance between the center of each LED. 1.25mm x 160 = 200mm 1.25mm x 120 = 150mm

by tal8d 6y ago

tyingq 6y ago

I wasn't suggesting one of them would settle the matter. I was suggesting it would be cheaper to use them instead. They are made to be grouped together, and daisy chained to a single controller. I believe each module would be 160 x 120 dots (19,200 dots total) though, based on module size and LED pitch. I'm unclear on where you got 104x78.

tal8d 6y ago
> I'm unclear on where you got 104x78. https://www.alibaba.com/product-detail/Hot-sale-small-pitch-led-display_62575493208.html https://www.alibaba.com/product-detail/Hot-sale-small-pitch-... Module Res Size P1.923 104*78 200*150 I went ahead and counted... 128x96 (12,288 LEDs) https://imgur.com/a/4qdY1Pr https://imgur.com/a/4qdY1Pr
- tyingq 6y ago
  It's just bad pictures and errant info. Here's a better link: https://www.aliexpress.com/item/32965783207.html https://www.aliexpress.com/item/32965783207.html It's 160x120, as I mentioned for a 200x150mm P1.25 led module. You just divide the width/height by the pitch to see the number of dots. As far as I can tell, 1.25mm is the smallest pitch available for these modules.
  - tal8d 6y ago
    lol, I marked every tenth led manually and counted twice - the number is correct, the marketplace is wrong. https://imgur.com/a/NqVXtDd https://imgur.com/a/NqVXtDd https://www.mblock.com.tw/upload/Investor/events/2020/20200805_C.pdf https://www.mblock.com.tw/upload/Investor/events/2020/202008...
    - tyingq 6y ago
      You counted dots on a picture of something other than a "200mmx150mm P1.25 led module". Pitch is the distance between the center of each LED. 1.25mm x 160 = 200mm 1.25mm x 120 = 150mm