Linksys AC Series Router Configuration Tips for OpenWRT: Difference between revisions
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=== Hardware for Serial Connection === | |||
After much research and examination of the internal physical layout of the AC Series of routers, the these items seemed the best fit for easily connecting a computer to the router. It allows one to connect everything with no soldering, using standard USB cables. There are of course many other choices, using different hardware ranging from USB to Serial Adapter (with TTL), 9 pin serial ports, etc. | |||
Link as of late 2020: https://www.ebay.com/itm/Switchcraft-EHUSBBABX-USB-B-to-A-EH-Panel-Mount-Feed-Thru-Connector-Black/153365243032 | |||
[[File:USBA.jpg|alt=USB A Connector|none|thumb|126x126px|USB A Connector]] | |||
[[File:USBB.jpg|alt=USB B Connector|none|thumb|126x126px|USB B Connector]] | |||
Link as of Late 2020:https://www.ebay.com/itm/PL2303TA-USB-to-TTL-RS232-COM-UART-Module-Serial-Cable-Adapter-for-Arduino/233559278066 | |||
[[File:PL2303TA.jpg|none|thumb|126x126px|PL2303TA]] | |||
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===The Real Pin # 1=== | ===The Real Pin # 1=== | ||
Many website tutorials, YouTube videos, diagrams, and even images on the OpenWRT website show the TTL Serial Port for the AC series of routers numbered from left to right, starting with "pin 1", as viewed from the top / front of the circuit board. This is NOT correct, although both the names / labels of the pins and what their function is (Ground, TX (Transmit), and RX (Receive)), ''are correct''. It is an industry standard to identify "Pin 1" on a circuit board in several manners. The most common methods includes a triangle printed on the circuit board closest to "Pin 1" and a square solder connection (as viewed from the bottom). Another convention that is typically followed, but is not an absolute rule, is putting "Pin 1" closest to the nearest edge of a circuit board. The AC Series of routers all have a square solder connection on the bottom and a triangle printed on top of the circuit board for "Pin 1" on the right side of the connector, as viewed from the top. Since there is no pinout standard for that type of connector, the manufacturer (Linksys in this case) gets to define where "Pin 1" is located. And per the triangle marking, pin closest to edge, and square solder connection pin number one is located as indicated by the below image. PERIOD. Image is courtesy of: http://wtarreau.blogspot.com/2018/ | Many website tutorials, YouTube videos, diagrams, and even images on the OpenWRT website show the TTL Serial Port for the AC series of routers numbered from left to right, starting with "pin 1", as viewed from the top / front of the circuit board. This is NOT correct, although both the names / labels of the pins and what their function is (Ground, TX (Transmit), and RX (Receive)), ''are correct''. It is an industry standard to identify "Pin 1" on a circuit board in several manners. The most common methods includes a triangle printed on the circuit board closest to "Pin 1" and a square solder connection (as viewed from the bottom). Another convention that is typically followed, but is not an absolute rule, is putting "Pin 1" closest to the nearest edge of a circuit board. The AC Series of routers all have a square solder connection on the bottom and a triangle printed on top of the circuit board for "Pin 1" on the right side of the connector, as viewed from the top. Since there is no pinout standard for that type of connector, the manufacturer (Linksys in this case) gets to define where "Pin 1" is located. And per the triangle marking, pin closest to edge, and square solder connection pin number one is located as indicated by the below image. PERIOD. Image is courtesy of: http://wtarreau.blogspot.com/2018/ | ||