WikiDevi.Wi-Cat.RU:Network/Hardware modifications/USB to Serial TTL Mod

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DIY

Linksys WRT54G-TM

You only need 3 wires hooked up, RX, TX, and GND. The RST, +5.0v, and the +3.3v leads will not be used.

I bought the TM off EBay with the JTAG header, SD/MMC mod and dd-wrt already installed, because honestly I was worried I would not be able to complete the tasks properly. Now that I have completed my first Mod to it, I feel my worry was unwarranted. It was quite easy really. I will warn you now the images are quit large for detail.

USB to R232 Adapter

TM's Guts

The first thing I did was to purchase the adapter. I got it off EBay for $22.46 total. It was a kit. The RST, +5v, 3.3v are not used.

Contents of the kit pinouts another view

Now to disassemble the router.

Layed out!

Now the first thing I had to do was to remove the vss and gnd wires for the SD mod for one cause I need that side of the header and the header itself needs to be installed there.

A closer look at the wires

Now with the wire removed and the header soldered in....

Header in Another look Bottoms up!

Now mod the case, I used my cordless dermal to cut a hole in the case just above the word "reset"

A look at the case mod A different angle

Now to attach the adapter to the case. The adapter came with a foam pad in the package so I cut it in half to use as a spacer. I did bind over the pins on the adapter for clearance reasons.

Affixing the adapter Pad in Adapter in

View from the outside of the case....

Backview Checking Fit

Now on to hooking it all up. For the adapter only 3 wires are needed. It has 6 in the cable. So I used the 2 of the other 3 to put connectors on the SD mod wires. Which will be connected to the 3.3volt and ground pins on the side of the header not used. The first time i got this together it didn't work. Come to find out the Tx and Rx wires need to be crossed. In other words Tx to Rx and Rx to Tx.

Wire hookup All back together Test fit again

Now for boot up...

Device manager Comunication has begun

Asus RT-N16

For my new Asus, I just pulled the USB to Serial TTL adapter out and installed it in my RT-N16.

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