Portable Cellphone to Desktop Cellphone Conversion

I'm putting my Samsung cellphone (see duct-tape samsung project) into a desktop phone. I want the cellphone to be hidden, so that the finished phone looks and operates just like a normal household desktop phone. Something that can sit on the scoring table while I bowl.

Progress:

I finished this project a few weeks ago. There's not much to show, it pretty much looks like a phone. Anyway, good for me.

2002-03-19

Almost done with the first stage. I got all the keys wired and tested. Everything is working great. All I have to do now is put it in the box, and close things up nice. I've added some new photos at the bottom of the page.

There are a few features that I've given up on for the time being. Should the phone actually work well enough to warrant the time, I'll then worry about using the cradle to answer calls, recharging connection, etc.

2002-02-25

I started connecting the desktop phone's keypad to the cellphone. Here's a picture of it in action.

2002-01-28

I connected the desktop phone's handset to the cellphone. It worked. That's a good thing. I was able to hear and speak using it. I encountered some interferance when my hand was near the open cellphone. The signal faded and was lost. The same thing happened last time I was working on the cellphone, and the problem dissapeared when I wraped it in duct-tape. Hope that'll do the trick again.

2002-01-27

I've mapped out the desktop phone's keypad matrix, and tested its compatability with the cellphone's keypad.

Things left to worry about (in aproximate order of importance):

desktop phone has 14 buttons and the cellphone has 19, so I need to find a solution to that problem

2002-01-25

Found a suitable candidate for the project at Radio Shack for $9.99.

I dissasembled the desktop phone and didn't imediately see any problems for what I want to do.

Next, I dissasembled my Duct-tape Cellphone and removed the keypad/display board. Because the keypad and lcd share a board, they share the same connector. I don't think I can easily find this connector, and since it has LCD info on it, I've scrapped the idea of interfacing the desktop phone's keypad to this connector. What I've decided to do is, cut off the tops of the cellphone's keypad buttons and I'll solder the desktop phone's keypad directly to the cellphone's keypad. This sounds like a nightmare, and probably is.

Documents:

To Do

More Photos: