[HN Gopher] Transmitting SDI Signals from an Arduino
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       Transmitting SDI Signals from an Arduino
        
       Author : zdw
       Score  : 45 points
       Date   : 2023-02-06 20:35 UTC (1 days ago)
        
 (HTM) web link (github.com)
 (TXT) w3m dump (github.com)
        
       | nickcw wrote:
       | Just in case you were wondering
       | 
       | Serial digital interface (SDI) is a family of digital video
       | interfaces first standardized by SMPTE (The Society of Motion
       | Picture and Television Engineers) in 1989. For example, ITU-R
       | BT.656 and SMPTE 259M define digital video interfaces used for
       | broadcast-grade video. A related standard, known as high-
       | definition serial digital interface (HD-SDI), is standardized in
       | SMPTE 292M; this provides a nominal data rate of 1.485 Gbit/s.
       | 
       | From: https://en.wikipedia.org/wiki/Serial_digital_interface
        
         | wkat4242 wrote:
         | Ah thanks, I was wondering which SDI it was and I was pretty
         | sure it wasn't the Strategic Defense Initiative :)
         | 
         | Though secretly I was hoping to communicate with top secret
         | killer satellites from the 80s obviously! My world domination
         | plans will have to wait :'(
        
       | jcelerier wrote:
       | this is more, "transmitting SDI signals from a GS2962 driven by
       | an FPGA with some high-level control by an Arduino". An AVR chip
       | isn't going to blast out 1080p30 out of its GPIOs any time soon.
        
         | Goz3rr wrote:
         | The notion that an Arduino has to be (just) an AVR chip is
         | wrong though. The board in question here is an Arduino MKR
         | Vidor 4000 (which doesn't even contain an AVR chip, the SAMD21
         | is a 32bit ARM Cortex M0) and you also have the Arduino 101
         | which has a x86 Intel Quark microcontroller. Most of the new
         | Arduino products are using 32 bit ARM processors now.
        
           | joemi wrote:
           | But Arduino (the company) is _most_ famous for their use of
           | the atmega-based products, and "Arduino" (the word) is often
           | used synonymously with those specific products (and often
           | specifically meaning the Arduino Uno). Their non-atmega
           | products are a newer and less popular development. I'm sure
           | that over time "Arduino" (the word) will be used less and
           | less to mean one of their atmega products, but for a lot of
           | people, "Arduino" still means "board with an atmega328p".
        
             | Goz3rr wrote:
             | I would personally hazard the guess that for a significant
             | portion of the people who use Arduino, it just means any
             | board that is programmed in the Arduino framework. They
             | have no real idea about or connection to the hardware that
             | is running their code.
        
       | mschuster91 wrote:
       | For those interested in toying around with SDI: Blackmagic Design
       | (the same company that made the Video Assist monitor pictured in
       | this repository's README.md) also makes an SDI shield for Arduino
       | that can be used to inject stuff into the SDI bitstream [1].
       | 
       | Additionally, if you take one of their Micro Converters apart,
       | they're nothing more than a (powerful) FPGA and SerDes units for
       | HDMI / SDI.
       | 
       | [1]
       | https://www.blackmagicdesign.com/de/developer/product/arduin...
        
         | cpgxiii wrote:
         | Pretty much every BMD product is FPGA based, either with a
         | conventional FPGA or a hybrid like Zynq (ARM cores + FPGA). It
         | clearly gives them a lot of design commonality in hardware and
         | flexibility in behavior. It's a good example that you can still
         | have a large range of products at low cost (compared to the
         | rest of the industry) while leveraging fairly expensive generic
         | parts (compared to ASICs).
        
         | osamagirl69 wrote:
         | The blackmagic arduino sheild does not actually produce SDI
         | video, it only allows you to insert out of band control data.
         | If blackmagic were to release the FPGA firmware you could add
         | the same capability that author did (hardware is essentially
         | the same), but as it is you would still need a SDI video source
         | such as the micro converter that you mentioned, and a HDMI test
         | pattern generator to feed the converter.
        
       | speps wrote:
       | Associated article, probably a more interesting link:
       | https://blog.tempus-ex.com/pro-video-with-arduinos-an-intro-...
        
       | pyc7389 wrote:
       | This Sri suppose for new some face toon look .$660
        
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       (page generated 2023-02-07 23:01 UTC)