Modify the Linksys hardware - Revision history

Zlund: Fixed the spelling of Linksys

2009-06-28T22:58:25Z

Fixed the spelling of Linksys

Brylow: /* Before Starting */

2009-02-01T23:38:48Z

Before Starting

Brylow: Updated fabrication info.

2009-02-01T23:31:52Z

Updated fabrication info.

Brylow: Added some missing parts info.

2009-02-01T22:59:40Z

Added some missing parts info.

Michael: Added Category:HOWTO

2008-09-30T23:12:47Z

Added Category:HOWTO

Michael: HOWTO:Modify the Linksys hardware moved to Modify the Linksys hardware

2008-09-30T23:11:20Z

HOWTO:Modify the Linksys hardware moved to Modify the Linksys hardware

Amallen: /* Before Starting */ changed a "here" link for the transceiver board page (but it still doesn't exist)

2008-09-25T22:22:40Z

Before Starting: changed a "here" link for the transceiver board page (but it still doesn't exist)

Amallen: added volmeter to the "Tools List"

2008-07-07T23:00:56Z

added volmeter to the "Tools List"

Amallen: Added description of testing the transceiver board in "Task Three"

2008-07-07T22:58:43Z

Added description of testing the transceiver board in "Task Three"

Amallen: /* Task Five: Attach Transceiver Board to DB9 Serial Ports */ added quick one sentence description of drilling screw holes on either side of the serial port holes

2008-07-07T19:49:39Z

Task Five: Attach Transceiver Board to DB9 Serial Ports: added quick one sentence description of drilling screw holes on either side of the serial port holes

@@ Line 21: / Line 21: @@
 |-
 | 1
-| LinkSys [[WRT54GL]] Router
+| Linksys [[WRT54GL]] Router
 | 802.11b/g wireless broadband router
 | [http://www.linksys.com/servlet/Satellite?c=L_Product_C2&childpagename=US%2FLayout&cid=1133202177241&pagename=Linksys%2FCommon%2FVisitorWrapper Linksys WRT54GL]
@@ Line 98: / Line 98: @@
 [[Image:Wrt54gl-layout.jpg|thumb|250px|left|An overhead view to get your bearings. The serial header is (D) here.]]
-First you need to unscrew the two screws keeping the router's board attached to the case. Once the PCB has been removed from the case, locate the serial header holes provided by LinkSys. This would be a grid of 10 holes (5x2) located on the bottom-right corner of the board when the antennae stubs are on top (see the top-down photo for clarification). These ten holes hold all of the input and output for the two serial interfaces--UART0, and UART1--on the device.
+First you need to unscrew the two screws keeping the router's board attached to the case. Once the PCB has been removed from the case, locate the serial header holes provided by Linksys. This would be a grid of 10 holes (5x2) located on the bottom-right corner of the board when the antennae stubs are on top (see the top-down photo for clarification). These ten holes hold all of the input and output for the two serial interfaces--UART0, and UART1--on the device.
 [[Image:Serial.jpg|thumb|250px|right|A closer look at our attached serial header.]]

@@ Line 10: / Line 10: @@
 [http://www.mscs.mu.edu/~brylow/xinu/Xinu-Transceiver.pcb Transceiver PCB layout] is in [http://pcb.sourceforge.net/ PCB format].
 [http://www.mscs.mu.edu/~brylow/xinu/Xinu-Transceiver.tgz Transceiver fabrication tarball] contains Gerber photoplotter and CNC drill files suitable for professional fabrication.
 === Parts List ===

@@ Line 6: / Line 6: @@
 == Before Starting ==
-'''NOTE:''' The following lists all the ''necessary'' parts. However, the following tutorial describes assembling the transceiver on one of our custom transceiver boards. One could assemble the parts of the entire transceiver properly without the board, but with more difficulty. Here is some more information on our custom [[something|transceiver boards]].
+'''NOTE:''' The following lists all the ''necessary'' parts. However, the following tutorial describes assembling the transceiver on one of our custom transceiver boards. One could assemble the parts of the entire transceiver properly without the board, but with more difficulty.  Our transceiver board design is freely available for public use.
 === Parts List ===

@@ Line 42: / Line 42: @@
 | 1
 | ADM202 Transceiver Chip
-| ?????????????
+| Serial Transceiver ADM202EAN
-| ?????????????
+| Jameco 1800464
-| $?.??
+| $1.60
 |-
 | 2
 | Capacitor 220 nF
-| ?????????????
+| Tantalum,.22uF,35V,10%
-| ?????????????
+| Jameco 33507
-| $?.??
+| $0.18
 |-
 | 3
 | Capacitor 100 nF
-| ?????????????
+| Tantalum,.1uF,35V,10%
-| ?????????????
+| Jameco 33488
-| $?.??
+| $0.22
 |-
 | 1
@@ Line 73: / Line 73: @@
 (We provide this parts list as a data point; we offer no guarantees about current prices, and it is not our intent to endorse any particular vendor.)
 === Tools List ===

← Older revision		Revision as of 23:12, 30 September 2008
Line 1:		Line 1:
		+	[[Category:HOWTO]]
	== Summary ==		== Summary ==

← Older revision	Revision as of 23:11, 30 September 2008
(No difference)

@@ Line 79: / Line 79: @@
 * Dremel tool (for cutting holes in plastic case)
 * Continuity Tester (Multimeter, or some other way of checking for proper connections)
 == Steps to Modify the Hardware ==

@@ Line 111: / Line 111: @@
 Using the diagram on the left, solder the '''shrouded double header''', the '''socket''', and the '''capacitors''' into the board in the appropriate places. '''NOTE:''' the positions of the components on the physical board are not represented in the diagram, but the silkscreen on the board indicates placement and orientation.  '''FURTHER NOTE:''' each component has a proper polarity or pin marking -- direction matters!
-The pictures to the right show the transceiver board in various stages of completion. The top one shows the blank board on which the other components will be added. The bottom one shows the '''shrouded double header''', the '''socket''', and the '''capacitors''' soldered in place. It also shows the actual ADM202 chip inserted into the socket. The next step is to get six wires from a chopped up piece of the ribbon cable (or any six spare wires) and solder them into place in the six holes (two sets of three) at the bottom of the transceiver board. The resulting completed transceiver board should look something like the picture below the diagram.
+The pictures to the right show the transceiver board in various stages of completion. The top one shows the blank board on which the other components will be added. The bottom one shows the '''shrouded double header''', the '''socket''', and the '''capacitors''' soldered in place. It also shows the actual ADM202 chip inserted into the socket, however, before inserting the chip it is a good idea to test what you've completed so far.
 <h3 style="clear:both;"> Task Four: Attach Tranceiver Board to the Router</h3>
@@ Line 144: / Line 148: @@
 [[Image:Serial ports done1.jpg|thumb|300px|right|Overhead picture of what the router will look like after the DB9 serial ports are correctly soldered into place, but before they have been screwed and secured into the router's case.]]
 [[Image:Serial ports done.jpg|thumb|300px|left|Front view of what the router will look like after the DB9 serial ports are correctly soldered into place, but before they have been screwed and secured into the router's case.]]
 <h3 style="clear:both;"> Task Six: Close the Router </h3>

@@ Line 124: / Line 124: @@
 === Task Five: Attach Transceiver Board to DB9 Serial Ports ===
-Before soldering the wires from the transceiver board to the serial ports, it is a good idea to drill two holes in the front of the router's casing to use for the serial ports. The three pictures to the right show how to take off the front sticker and what the case should look like after you've drilled two holes in the front for the serial ports. It is also a good idea to cut the sticker and place the left part back on to cover up the remaining holes in the casing.
+Before soldering the wires from the transceiver board to the serial ports, it is a good idea to drill two holes in the front of the router's casing to use for the serial ports and also two small holes on each side of the bigger ones to use for screws or bolts to keep the '''DB9 Serial Ports''' in place. The three pictures to the right show how to take off the front sticker and what the case should look like after you've drilled two holes in the front for the serial ports. It is also a good idea to cut the sticker and place the left part back on to cover up the remaining holes in the casing.
 [[Image:Serial ports diagram.JPG|thumb|300px|left|Diagram of wiring to connect the two DB9 serial ports to the transceiver board.]]
@@ Line 155: / Line 155: @@
 |-
 |}
 === Task Seven: Rejoice ===