TTL Connector for Linksys AC Series Routers: Difference between revisions
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The ONLY TTL Adapter that should be purchased for use with a Linksys AC Series Router (AKA WRT Series) is one based on an FTDI chipset. | The ONLY ''TTL'' ([[wikipedia:Transistor–transistor_logic|Transistor-Transistor Logic]], not Time To Live for DNS) ''to Serial Adapter'' ([[wikipedia:RS-232|technically RS-232 or V.24]]) that should be purchased for use with a Linksys AC Series Router (AKA WRT Series) is one based on an FTDI chipset. | ||
And the Serial Header Pin Out chart / diagram in the OpenWRT documentation on the OpenWRT site is incorrect. | And the Serial Header Pin Out chart / diagram in the OpenWRT documentation on the OpenWRT site is incorrect. | ||
=== Summary === | ===Summary=== | ||
===== The Issue ===== | =====The Issue===== | ||
=====The Solution===== | |||
==== | ==== Product(s) Review ==== | ||
===== The Journey ===== | =====The Journey===== | ||
===== More Information ===== | =====More Information===== | ||
==== TTL and Serial / COM (AKA RS-232) ==== | ====TTL and Serial / COM (AKA RS-232)==== | ||
A good explanation of Serial Communication along with a comparison between TTL and RS-232 is here: | 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) * | ||
====The Real Pin # 1==== | ====The Real Pin # 1==== | ||
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=====Respit===== | =====Respit===== | ||
This is not intended to be any sort of attack on the nice people who have done all of the difficult work to figure things out, document it, etc. Somewhere along the way, someone made an innocent mistake, and it has been propagated quite a bit. This short diatribe on the Pin # 1 subject is intended to point out the issue in the hope that it may one day be corrected. It's also an interesting lesson in how once incorrect information gets out there, it's difficult to correct. | This is not intended to be any sort of attack on the nice people who have done all of the difficult work to figure things out, document it, etc. Somewhere along the way, someone made an innocent mistake, and it has been propagated quite a bit. This short diatribe on the Pin # 1 subject is intended to point out the issue in the hope that it may one day be corrected. It's also an interesting lesson in how once incorrect information gets out there, it's difficult to correct. | ||
==== Side Notes ==== | |||
<nowiki>*</nowiki> As good as the article is, the title really buries the lede: [https://www.seeedstudio.com/blog/2019/12/11/rs232-vs-ttl-beginner-guide-to-serial-communication/ RS232 vs TTL: Beginner Guide to Serial Communication](shouldn't RS232 VS TTL be the first paragraph?). And having a desire to link a reader to the specific text and anchor tag / id was searched for, but didn't exist. Hence the need to reference the pertinent section at the bottom of the article. Without an ID or NAME attribute, there's no way to link to that point on a page. And it's coming from a Word Press site. That brings up the idea of automatic ID tags for posts and pages (and paragraphs as it turns out) | |||
* https://wordpress.org/plugins/paragraph-level-ids/ | |||
* https://wordpress.org/plugins/lh-paragraph-ids/ | |||
* https://wordpress.org/plugins/addfunc-ids/ | |||