Difference between revisions of "TTL Connector for Linksys AC Series Routers"

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TTL Connector for Linksys AC Series Routers (view source)

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-The BEST ''TTL'' ''to Serial Adapter'' that can be purchased for use with a Linksys AC Series Router is based on an FTDI chipset.  Of all the adapters available, the best one is from a company named DSD Tech, model SH-U09C.
+The BEST ''TTL'' ''to Serial Adapter'' that can be purchased for use with a Linksys AC Series Router is based on an FTDI chipset.  Of all the adapters available, the best one is from a company named [http://www.dsdtech-global.com/ DSD Tech], model SH-U09C.
 [[File:TTL to Serial Adapter Model SHU09C from DSD Tech.jpg|alt=TTL to Serial Adapter Model SH-U09C from DSD Tech|thumb|TTL to Serial Adapter Model SH-U09C from DSD Tech]]
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 This article is about finding the best ''TTL to Serial Adapter'' available on the market today.  It is written in regards to the Linksys AC Series of routers.  But the information can applied to [[wikipedia:Arduino|Arduino]], [[wikipedia:Raspberry_Pi|Raspberry Pi]], and other similar single board computers or routers.
-==== The Objective ====
+====The Objective====
 Finding, Purchasing, and Connecting a ''TTL'' ''to Serial Adapter'' to a Linksys AC Series Router for [[wikipedia:System_console|system console]] access.
@@ Line 17: / Line 17: @@
 =====The Solution=====
-The model SH-U09C from DSD Tech
+The model SH-U09C from DSD Tech is the best ''TTL to Serial Adapter.''
 ====Product(s) Review====
+The rational for deciding the best ''TTL to Serial Adapter'', the SH-U09C is explained.
 =====The Journey=====
+Many, many ''TTL to Serial Adapters'' were tested, with the SH-U09C from DSD Tech coming out on top.
-=====More Information=====
+=====The Pollution=====
+There are so many, many articles on this subject that have no substantive information and are not helpful.
-===== The Pollution =====
+==== More Information ====
+There are other models available too.
-====A Brief Orientation====
+=== A Brief Orientation ===
 TTL is an acronym for [[wikipedia:Transistor–transistor_logic|Transistor-Transistor Logic]] (not [[wikipedia:Time_to_live|Time To Live]] which is related to [[wikipedia:Domain_Name_System|DNS]]).  The definition of TTL by Wikipedia doesn't do a great job of explaining how TTL relates to [[wikipedia:Serial_communication|serial communication]] method that takes place over copper wires.  And technically, when referring to a ''Serial Adapter'', the more accurate terms are [[wikipedia:RS-232|RS-232 or V.24]].
 The Linksys AC Series Routers, sometimes referred to as the new WRT Series of routers, consists of several models.  They are the WRT1900AC, WRT1900ACS, WRT3200ACM, and WRT32X.  Some of the models have additional model designations such as version 1 (v1), version 2 (v2), and references to various other products such as the Microsoft X-Box.
-<br />
+=== The Issue ===
+=== The Solution ===
+==== DSD Tech ====
+The official DSD Tech website does not do justice to the care they put into their products.  Their [https://www.amazon.com/stores/DSDTECH/DSDTECH/page/FED157A8-7087-4770-93C5-535EC7630366 Amazon Store] site is much, much better than their official website.  Maybe they're concentrating on making good products instead of a good home page.
+=== More Information ===
 ====TTL and Serial / COM (AKA RS-232)====
 A good explanation of Serial Communication along with a comparison between TTL and RS-232 is here: RS232 vs TTL: [https://www.seeedstudio.com/blog/2019/12/11/rs232-vs-ttl-beginner-guide-to-serial-communication/ RS232 vs TTL: Beginner Guide to Serial Communication] (the RS-232 VS TTL is at the end of the article) *
+==== Other Models ====
+Another model to keep in mind is the newer SH-U09C2 from DSD Tech.  It adds support for 1.8V signalling.
+Another model ([https://www.amazon.com/gp/product/B014GZTCC6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 unknown number]) in a different form factor is from a vendor named [https://www.amazon.com/stores/DIYmall/page/8D085B8E-092A-4BC1-9E36-15F4ED0C8B4F?ref_=ast_bln DIYMall].  This style might be more useful for Raspberry Pi and Arduino applications.  It will still fit inside of a Linksys AC Series Router, but the DSD Tech products fit better.
 ====The Real Pin # 1====
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 And the Serial Header Pin Out chart / diagram in the OpenWRT documentation on the OpenWRT site is incorrect.
-==== The Pollution ====
+====The Pollution====
-Try searching for something like ''best, ttl, serial, adapter''.  All of the top results list a lot of ''TTL to Serial Adapters''.  But none of them state why.  And it's obvious a lot of them are written in an automated fashion, for the purposes of scoring high on a search engine's results.  Not many of them care.  For instance, this example: https://www.findthisbest.com/best-serial-adapters/converter.  It's just a long list of products.  No testing results, no comparisons, no methodology, just a bunch of aggregated information.  Now compliments do need to be given to the author, Mike Davis, in term of SEO refinement and being listed as a top search result.  But for substantive content, that article is like a candy bar.  It might taste good, but in terms of nutrition (IE, equating nutrition to knowledge), it's useless.
+Try searching for something like ''best, ttl, serial, adapter''.  All of the top results list a lot of ''TTL to Serial Adapters''.  But none of them state why.  And it's obvious a lot of them are written in an automated fashion, for the purposes of scoring high on a search engine's results.  Not many of them care.  For instance, this example: https://www.findthisbest.com/best-serial-adapters/converter.  It's just a long list of products.  No testing results, no comparisons, no methodology, just a bunch of aggregated information.  Now compliments do need to be given to the author, Mike Davis, in term of SEO refinement and being listed as a top search result.  But for substantive content, that article is like a candy bar.  It might taste good, but in terms of nutrition (IE, equating nutrition to knowledge), it's useless.  Case in point, a quote: "Thereof, can you convert RS232 to USB?"  What?  The answer to that question is even more robotic (and useless).