Revision as of 11:15, 24 February 2009

Microscope

Thanks to Karsten Nohl presentation at Hacker Space Fest, there's an interesting DIY approach for reverse engineering.

Now we have to find a microscope...

Friend of Phil will lend a microscope with camera
- not perfect but should enable us to do the first etching/abrasive steps
We'll try to select and acquire a perfect microscope for this job.

These are the features we're looking for:

500x magnification
2 MP to 8 MP camera
Objective table to move the chip slowly (i.e. not by hand, too much shaking and imprecision)
Reflected (incident) lighting

Feature we DON'T NEED:

Confocal microscope (it seems, because we'll abrase/grind away the upper layers anyway and the bottom layers are opaque anyway too)

Still selecting the right model.

Microscope: 640x optical Bresser Biolux
- lent by Phil's friend
Objective table:
- micro-screws controlled moving plate
- possibility to buy one: [1]
Camera: 3.2 MP Canon Ixus V3
- Mounting: Attached directly to the eye-piece
- Drawback: produces round (not square) pictures (with no noticeable deformation) of smaller size/coverage than regular microscope-camera.
- Advantage: working and free
Camera: 0.3 MP Ulead IC Chip camera
- Drawback: Low res.
- Advantage: square images, adapted for the scope.

Req: 500x magnification or higher
- This one goes up to 640x
Req: 2 MP to 8 MP camera
- The Canon IXUS is 3.2 MP
- Will need to take more photo as just 2/3rd of the picture is usable (round pictures)
Req: Objective table to move the chip slowly (i.e. not by hand, too much shaking and imprecision)
- Poor man setup with micro-screws, TO DO
Req: Reflected (incident) lighting
- Reflected light works at lower magnification with daylight
- Even for microscope which is designed for see-through
- TODO: Need to buy adequate lighting. Got to test with external lighting (HB LEDs?) at higher magnification (640x)

La présentation de Karsten Nohl (en) au Hacker Space Fest ouvre la voie à des bricolages interessants de reverse engineering.

Maintenant il nous faut un microscope.

Un ami de Phil prêtera un microscope avec camera
- Pas l'idéal mais devrait suffire pour les premières étapes d'abrasion et de grattage.
On va essayer de choisir et de se procurer le microscope idéal à cet emploi.

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+<div style="float:left; width:48%;"> <!-- This width adds to the margin below to equal 100 %-->
 = Microscope =
 Thanks to [http://www.hackerspace.net/talks:reverse-engineering-rfid Karsten Nohl presentation] at [http://www.hackerspace.net/schedule Hacker Space Fest], there's an interesting DIY approach for reverse engineering.
@@ Line 88: / Line 89: @@
 = Documentation =
 * [http://www.chillingeffects.org/reverse/faq.cgi#QID195 Is hardware reverse engineering legal?]
+</div>
+<div style="float:right; width:48%;"> <!-- This width adds to the margin below to equal 100 %-->
+= Microscope =
+La [http://www.hackerspace.net/talks:reverse-engineering-rfid présentation de Karsten Nohl (en)] au [http://www.hackerspace.net/schedule Hacker Space Fest] ouvre la voie à des bricolages interessants de reverse engineering.
+Maintenant il nous faut un microscope.
+* Un ami de Phil prêtera un microscope avec camera
+** Pas l'idéal mais devrait suffire pour les premières étapes d'abrasion et de grattage.
+* On va essayer de choisir et de se procurer le microscope idéal à cet emploi.
+</div>