Modify the Linksys hardware

From Embedded Xinu
Revision as of 21:51, 15 September 2006 by Phinze (talk | contribs) (→‎Steps)
Jump to navigation Jump to search

Work in progress...

Parts List

Quantity Part Name Details Part / Model Number Price
1 LinkSys WRT54GL Router 802.11b/g wireless broadband router LinkSys WRT54GL ~$65.00
1 Ribbon cable 28 AWG, 10 conductor, 25' Jameco 643508CM $4.99
1 IDC socket connector 0.1”, 10 conductor Jameco 32491CM $0.25
1 IDC shrouded header 0.1”, 10 conductor Jameco 67811CM $0.33
1 RS232 Transmitter/Receiver IC 2DVR/2RCVR RS232 5V 20-DIP DigiKey MAX233CPP-ND $7.45
2 Two (2) DB9 Female 22AWG,SOLDER CUP Jameco 15771CM $0.59

Tools List

  • Soldering Iron
  • Dremel tool (for cutting holes in plastic case)


Task One: Opening the Router

It's really very easy... almost too easy.

As others have done, I will defer to Void Main, who provides nice illustrated opening instructions.

DO NOTE: This is where the warranty on the router is voided! (But really, you know there's no real fun to be had unless a warranty gets voided somewhere.)

Task Two: Attaching the Serial Header

An overhead view to get your bearings. The serial header is (D) here.

Now that your PCB is naked, 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. (OpenWRT by default runs a console on UART0, so we have something to look forward to here!)

A closer look at our attached serial header.

Now, we could just solder wires right onto these holes, but a by placing a nice 10-pin header on the board we can easily attach and detach a 10 connection cable. This is where you will use your soldering iron solder the IDC shrouded header onto the board.

This will be the only soldering that you have to do on the LinkSys PCB.

Task Three: