HOWTO:Modify the ASUS hardware - Revision history

Vblas: /* Task Six: Attach Transceiver Board to DB9 Serial Ports */

2010-08-11T14:00:22Z

Task Six: Attach Transceiver Board to DB9 Serial Ports

Vblas: /* Task Two: Attach the Serial Header */

2010-08-11T13:55:08Z

Task Two: Attach the Serial Header

Vblas: /* Task One: Open the Router */

2010-08-11T13:31:06Z

Task One: Open the Router

Vblas: /* Parts List */

2010-08-11T13:30:54Z

Parts List

Vblas: /* Steps to Modify the Hardware */

2010-08-10T23:02:47Z

Steps to Modify the Hardware

Vblas at 23:02, 10 August 2010

2010-08-10T23:02:14Z

Vblas: /* Task Two: Attach the Serial Header */

2010-08-10T22:58:00Z

Task Two: Attach the Serial Header

Vblas: /* Task Two: Attach the Serial Header */

2010-08-10T22:55:23Z

Task Two: Attach the Serial Header

Vblas: /* Task Two: Attach the Serial Header */

2010-08-10T22:54:35Z

Task Two: Attach the Serial Header

Vblas: /* Task Two: Attach the Serial Header */

2010-08-10T21:28:34Z

Task Two: Attach the Serial Header

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 === Task Six: Attach Transceiver Board to DB9 Serial Ports ===
 Since the router is very small, it will not have space to place the DB9 Serial Port. Therefore, a small container needs to be created to encase all of the components. This will be discussed in step seven.
-Take the three wires from the transceiver board and attach them to the DB9 female according to the diagram. (picture here). Make sure that the solder cups 1, 4, and 6 are connected to each other and solder cups 7 and 8 are connected to each other in the DB9 Female serial port. Notice that in the case of the DB9 Female the T1OUT pin of the ADM202 transceiver chip needs to be connected to solder cup 2, the R1IN pin of the ADM202 transceiver chip needs to be connected to solder cup 3, and the ground needs to be connected to solder cup 5.
+Take the three wires from the transceiver board and attach them to the DB9 female according to the diagram. Make sure that the solder cups 1, 4, and 6 are connected to each other and solder cups 7 and 8 are connected to each other in the DB9 Female serial port. Notice that in the case of the DB9 Female the T1OUT pin of the ADM202 transceiver chip needs to be connected to solder cup 2, the R1IN pin of the ADM202 transceiver chip needs to be connected to solder cup 3, and the ground needs to be connected to solder cup 5.
 [[Image:DB9_serial_port_wiring.jpeg|thumb|400px|right|Diagram demonstrating proper wiring between the transceiver board and the DB9 	serial port.]]

@@ Line 87: / Line 87: @@
 === Task Two: Attach the Serial Header ===
-The PCB is easily removable at this state from the router. Located in the center of the PCB is the Broadcom BCM535 chip. Above the chip are four holes that are aligned vertically. The four holes represent the input and output for the serial interface, along with the 3.3 volt power and ground sources for the serial port.
+The PCB is easily removable at this state from the router. Located in the center of the PCB is the Broadcom BCM5354 chip. Above the chip are four holes that are aligned vertically. The four holes represent the input and output for the serial interface, along with the 3.3 volt power and ground sources for the serial port.
 For easier connectivity, we can use a 4-pin header on the board to easily attach and detach a 4 connection cable. Use a soldering iron to solder the 4-pin header onto the board.
@@ Line 93: / Line 93: @@
 <h3 style="clear:both;"> Task Three: Create space for access to serial port on the router </h3>
-Using a dremel, carefully cut out a rectangular shaped hole on the faceplate of the router. The hole should be cut above the words “Portable” and it should be 3 mm wide and 1 cm in height, or enough to see the serial port through the hole. This will be used for a 4-wired cable to attach the router to the transceiver board, detailed in step seven.
+Using a dremel or other power tool, carefully cut out a rectangular shaped hole on the faceplate of the router. The hole should be cut above the words “Portable” and it should be 3 mm wide and 1 cm in height, or enough to see the serial port through the hole. This will be used for a 4-wired cable to attach the router to the transceiver board, detailed in step seven.
 <h3 style="clear:both;"> Task Four: Creating the ADM202 Transceiver Circuit Board </h3>
@@ Line 104: / Line 104: @@
 Solder the shrouded double header, the socket, and the capacitors onto the board. The direction of the pins matter due to their polarity.
-Once the components have been placed on the board, use a continuity tester to check the connection between header soldered into the router's board and the socket on the transceiver board. Now the ADM202 chip can be inserted onto the board. Next, wires need to be soldered onto bottom of the transceiver board. Since this router only has one transceiver board, only three of the holes need wires. Under the J2 label, solder wires into the two left most holes. Under the J1 label, which is under the chip, solder a wire on the right most hole.
+Once the components have been placed on the board, use a continuity tester to check the connection between the header soldered into the router's board and the socket on the transceiver board. Now the ADM202 chip can be inserted onto the board. Next, wires need to be soldered onto the bottom of the transceiver board. Since this router only has one transceiver board, only three of the holes need wires. Under the J2 label, solder wires into the two left most holes. Under the J1 label, which is under the chip, solder a wire on the right most hole.
 <h3 style="clear:both;"> Task Five: Attach Transceiver Board to the Router</h3>

@@ Line 81: / Line 81: @@
 === Task One: Open the Router ===
-Using a screwdriver, remove the two nails located underneath the router and getnly remove the top of the router from the bottom, revealing the PCB.
+Using a screwdriver, remove the two nails located underneath the router and gently remove the top of the router from the bottom, revealing the PCB.
 '''DO NOTE: This is where the warranty on the router is voided!'''

@@ Line 27: / Line 27: @@
 | 1
 | IDC socket connector
-| 4 pin
+| 4 pin header
 | Jameco
+|
@@ Line 33: / Line 33: @@
 | 1
 | IDC socket connector
-| 5 pin
+| 5 pin header
 | Jameco
+|

@@ Line 114: / Line 114: @@
 Since the router is very small, it will not have space to place the DB9 Serial Port. Therefore, a small container needs to be created to encase all of the components. This will be discussed in step seven.
 Take the three wires from the transceiver board and attach them to the DB9 female according to the diagram. (picture here). Make sure that the solder cups 1, 4, and 6 are connected to each other and solder cups 7 and 8 are connected to each other in the DB9 Female serial port. Notice that in the case of the DB9 Female the T1OUT pin of the ADM202 transceiver chip needs to be connected to solder cup 2, the R1IN pin of the ADM202 transceiver chip needs to be connected to solder cup 3, and the ground needs to be connected to solder cup 5.
-[[Image:DB9_serial_port_wiring|thumb|400px|right|Diagram demonstrating proper wiring between the transceiver board and the DB9 	serial port.]]
+[[Image:DB9_serial_port_wiring.jpeg|thumb|400px|right|Diagram demonstrating proper wiring between the transceiver board and the DB9 	serial port.]]
 Now you can use a continuity tester to make sure that all the connections are good and that no wires or solder cups are touching. The router should be placed back it its case, and the box keeping all the components together should separate the router from the transceiver board. It will be very bad if the circuit board and the transceiver board were to touch.

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 <h3 style="clear:both;"> Task Five: Attach Transceiver Board to the Router</h3>
 The easiest way to accomplish this is to use an 4-wire audio cable between the router's serial header and the shrouded double header on the transceiver board. Using the 4-pin header on the router, connect the four wires from the audio cable into the 4-pin header. On the transceiver board, follow the diagram to match the corresponding cables on the shrouded double header, but using a 5-pin serial header to easily attack to the shrouded double header.
-[[Image:Serial_Port_Connection.JPG|thumb|400px|left|Schematic showing the connections between the components of the ADM202 transceiver circuit board and between the board and the DB9 serial port.]]
+[[Image:Serial_Port_Connection.jpeg|thumb|400px|left|Schematic showing the connections between the components of the ADM202 transceiver circuit board and between the board and the DB9 serial port.]]
 === Task Six: Attach Transceiver Board to DB9 Serial Ports ===

← Older revision		Revision as of 21:28, 10 August 2010
Line 96:		Line 96:

	<h3 style="clear:both;"> Task Four: Creating the ADM202 Transceiver Circuit Board </h3>		<h3 style="clear:both;"> Task Four: Creating the ADM202 Transceiver Circuit Board </h3>
		+	[[Image:Transceiver_schematic_wl-330gE.JPG\|thumb\|400px\|left\|Schematic showing the connections between the components of the ADM202 transceiver circuit board and between the board and the DB9 serial port.]]
		+	[[Image:Transceiver board.jpg\|thumb\|150px\|right\|Blank transceiver board before adding components.]]
		+	[[Image:Complete transceiver board.jpg\|thumb\|150px\|right\|Transceiver board with all components in place except ribbon cables.]]
		+
	A transceiver circuit is needed to convert the 3.3 volt serial signals from the router to conventional RS-232 serial voltages. To do this, we need a small square of “perf board”, or other circuit prototyping techniques. A soldering iron needs to be used to solder the components onto the board.		A transceiver circuit is needed to convert the 3.3 volt serial signals from the router to conventional RS-232 serial voltages. To do this, we need a small square of “perf board”, or other circuit prototyping techniques. A soldering iron needs to be used to solder the components onto the board.