Polytechnic University ISIS Tempest Project

Feb-19-05

Decided on our goal:

 

Our goal at the end of this project is to capture signals from a standard CRT monitor and recreate themon another monitor, thus, showing what was on the origional monitor.

 

 

Vikram got a 1GHZ oscilloscope off of ebay for $1000. Today we are trying to configure and test the oscilloscope.

 

We have a Xilinx FPGA board which outputs a clock signal at 50MHZ. We are trying to configure the test the oscilloscope to see if we are going to get a square wave out of it. This eventually worked. And we could get a good signal.

 

 Not a square wave ;)

 

Vikram programming the Xilinx FPGA

 

FPGA closeup

 

So essentially we will be using software from the EckBox project to build a Van Eck device.

 

here is a quick and dirty diagram on how it will work.

 

The signal from the antenna will be amplified (by a radio) before it is sent into the AD converter.

 

Today, we don’t have the A/D converter and haven’t yet decided on what parts we wanted, so Vikram brought his oscilloscope in and then we went to the dollar store and got a few flavors of TV antennas and some connectors.

 

 

Then we played with the following setup. Couldn’t really read any monitor signals with out amplification. But we were able to get good results with a function generator... and have thus  proved the oscilloscope is good.

 

After lunch, we sat down and decided on the analog to digital converter chip and what parts are necessary to put the project together.

 

We want the ability to build 5 of these devices (we have 5 people working on the project).

Parts list so far:

Part

Quantity for 1 implementation

Price

Total Quantity for 5

Sub-Total

Shipping

Total

ADC08200

2

11.08

10

110.80

10

120.80

24 pin TSSOP to DIP

2

8.95

10

89.50

9.99

101.00

0.1 uF capacator

6

Vik

30

 

 

~

10 uF capacator

6

Vik

30

 

 

~

10 uH

Inductor

1

Vik

5

 

 

~

110 ohm resistor

1

Vik

5

 

 

~

220 ohm resistor

1

Vik

5

 

 

~

Wire…

~~

~

~~

 

 

~

breadboard

1

IEEE

5

 

 

~

3 volt power supply

1

Computer

5

 

 

~

3 to 5 level shifter

1

Vik

5

 

 

~

DB25 (Parallel) female socket

1

Vik

5

 

 

$20

Radio

1

Dollar Store?

5

$5

NA

~$30

Antenna

1

$1

5

$5

NA

~$5

Total

 

 

 

 

 

241.80 + ~$30

 

A price of Vik means that Vikram will be supplying the parts from his house...

 

The design so far

 

 

 

Feb-26-05

We changed our mind on the sample rate for the ADC as the price was 3 times as much with the 200mhz sampler, we will now use a 60mhz. The ADCs are in the mail and the adapters are here.

 

As we did not have the hardware to play with, we started hacking the vaneck source-forge project. The code small and to the point. We do however have to reboot the machine after ever instance (small bugs aparently). vmware's "revert" feature helped us. Below is an example of what we were able to read into the vaneck project.

 

(our screenshot)

 

exported screenshot through the vaneck code

(from a file)

 

Next week the parts should be here and we will be testing the ADC (more pretty pictures).