View source for MagSpoof Log

==== Project Summary ====
Our project aims to enable magnetic card communication of WUSTL ID cards and Dorm Key Cards with locks wirelessly. Our project is based off the the Magspoof project done by Sammy Kamkar. You can find a link to his project [https://samy.pl/magspoof here].  Our project aims to expand upon this design by having multiple cards stored on the device. As a basic design, we are using the Attiny85  to control the output of a  SN75441 motor driver .  The motor driver will output the RF signals to an inductor. The inductor should acts as an amplifier to the RF signals that will be readable by a magnetic card swipers.  We will have an indicator for the current card in use as well as a means to switch between cards. The challenge comes in that our micro controller, the Attiny85, has only six configurable pins. Three of these pins are taken by controlling the motor driver. This leaves only three pins and outputs. As well as this added functionality we plant to 3d-print a case for the device to provided a better aesthetic to the device.
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'''[[MagSpoof| MagSpoof Project Page]]'''

==== Week 9/8/2017 - 9/15/2017 ====
-acquired Arudino<br />
:Nathan: N/A<br />

-found magnetic swiper<br />
:Nathan: 30 min<br/>
-created parts list w/ costs<br />
:Jon: 30 min <br/>

-Wrote Project Proposal<br>
:Both: 3 Hours

====Week 9/15/2017 - 9/22/2017====
-configure mac bootcamp for windows on Jon's computer<br>
:Jon: 30 min<br>

-Download and use software to read swipe card info off of WashU id<br>
:Both:  1 Hour<br>
-obtained permission from campus services for the project<br>
:Both: N/A<br>
-preliminary design for multi-card circuit <br>
-We are using SN754410 as the motor driver higher current output than L293D
-higher current may affect power to chip, 3.7 V, already below operating voltage for chip
-may need to create a cell from battery packs
:Nathan: 2 Hours <br>

[[File:Screen Shot 2017-09-21 at 3.56.56 PM.png| 600px| Design 1]]<br>
:-Design 1 has the use of a single input to change card and activate the device. 
:-Card indicator has an enable LED, and 2 LED's to mark which card is being used
[[File:Screen Shot 2017-09-21 at 4.14.02 PM.png| 600px| Design2]]
:-Design 2 has the use of two input system, on to activate device and one to change cards
:-Card indicator has an enable LED, and 1 LED to mark which card is being used

-Wrote Ethics Section of Proposal <br>
:Jon:1 Hour<br>


-Arudino Demo
[[File:Video-1506057615.mp4| center | 600px]]
:Nathan:  10 min

====Week 9/22/2017 - 9/29/2017====
-received shipment of parts
:-switches were too big
:-returned and order new smaller switches
:Nathan:10 min

-programming Attiny85 using Arudino for BLINK 
:-Couldn't get serial port to sync
:-believe due to a boot loader issue on the Arduino UNO
:-bought AVR programmer for $20 from sparkfun to replace Arduino UNO
:Nathan: 2 Hours

-Made Presentation for Class
[[File:MagSpoof Presentation.pdf]]
:Jon: 1 Hour

-started prototyping board for Design 2
:Jon: 40 Min

-started redesign of firmware for multicard design 2
:Nathan: 40 Min

====Week 9/29/2017 - 10/6/2017====
-changes to input commit #: e9e29a5
:Nathan: 1 Hour

-switched to just Arduino to debug input for double tap commit #: 9c45446
:Intial sktech created 2005 by [http://www.0j0.org DojoDave] modified 30 Aug 2011 by Tom Igoe
:[https://www.arduino.cc/en/Tutorial/Button?action=sourceblock&num=1 Link to original sketch]
:Nathan: 1 Hour

-Proposal updates
:Nathan: 30 min

-Initial Programming of Attiny85
:-Blink Program uploaded to Attiny85 commit #:9791bc5 <br>
:[[File:Video-1507154965.mp4 | center | 600px]] <br>
:-Blink with input Attiny85 commit#: 9f6de0e
:[[File:Video-1507156895.mp4 | center | 600px]]
:Nathan: 1 Hour
-Long vs Short Press Input Recognition commit#: db48cde
:Jonathan: 2 Hours 
-Returned Old Parts
:Jonathan: 30 mins 
-refined the input commit #: 5d95f35
:[[File:Video-1507239861.mp4 | center | 600px ]]
:Both: 40 Min
[[Category:Logs]]
[[Category:Fall 2017 Logs]]

====Week 10/7/2017 - 10/14/2017====
Assembeld Prototype Circuit:
:Jonathan: 4 hours
Test Sodering:
:Jonathan: 2 hours
Code Development
:inputs control behavior
:firmware reconfigure 4 tracks
:input algorithm in magspoof.c
:Commit #: up to e3aa399
:Nathan: 3 hours <br>
Update Wiki
:Nathan: 1 Hour

====Week 10/14/2017 - 10/20/2017====
Worked with card reader
: Was able to get the card reader to recognize the device
: Under some circumstances, the card info was transmitted
: The card format seems to be Track 2 ISO with bit length 5
: Disassembled the card reader to better access the read head
:May need much stronger inductor for read head to recognize with casing
:Nathan 3.5 Hours
Worked debugging reader
:had track read with inputs on Track 1 and Track 2 but very inconsistent
:plan to use bolt wrapped in wire for strong inductor
:Nathan 2.0 Hours/Jonathan 1.5 Hours
3-D Printing Initial Engagement
: Watched  tutorials
: Started designing case prototypes
: Jonathan 3.0 hours
Cleaned up Wiki/Log in response to midterm comments
:Jonathan 1.0 Hours
Started designing box in Fusion 360
:Jonathan 3.0 Hours
Further testing of Magnetic Inductor 
:Nathan 1.0 Hours

====Week 10/20/2017 - 10/26/2017====
Continued to troubleshoot prototype
: Nathan 2 hours 
Refined 3-d case design, added lid and beveled edges, updated dimensions
: Jonathan 2 hours
Sodering Practice/Perfboard initial deployment
: Jonathan And Nathan 3 hours
====Week 10/26/2017 - 11/2/2017====
Working Prototype:
[[File:Video-1509214600.mp4|center|600px]]
-had to increase the clock to 8 MHz internal
Security Exploit Demo:
[[File:Video-1509215467.mp4| center | 600px]]
:Nathan 2 Hours
Finished perfboard mockup and nearly completed full perfboard prototype
:Jonathan 2.5 Hours
Input Debugging
:Nathan 1.5 Hours
:Finishing Perfboard prototype
:Jonathan 2 hours

=== Week 11/2/17 - 11/9/17===
Finished More Compact Version of Perfboard (to be used in actual device)
:Jonathan 4 hours
:[[File:Users/Severns/Desktop/IMG_1205.m4v]]
Meeting with Card Services
:Jonathan and Nathan 30 minutes
Researched and created .BRD  <br>
:used eagle CAD software to change schematic to PCB <br>
:may use to replace the board Jon Built  <br>
:would take about 3 weeks to get here which may be too long for demo  <br>
:Nathan 2.5 Hours

=== Week 11/9/17 - 11/16/17 ===
Added fine details to Box, runners and guides for wires - holes for button, main switch and inductor cables, 
:sent box to TA Nathan for STL file approval
: Jonathan 3 hours
Worked on PCB
:finalized design for part placement
:research manufacturing for PCB
:Genrated Gerber files
:sent quotes to Feher and Jon
:Nathan 5 Hours
Ordered PCB:
:Ordered 3 Boards from OSH Park
:Nathan 0.5 Hours
Tested Box Inductor- did not work
: Formula for inductance in given by L= (n^2*U*A)/I, where n=number of turns, U is a constant, A is the cross-section area of the inductor, l is the length of the wire used.  Therefore we believe the inductor didn't work because although the area of the box inductor is much larger, as a result, we lost many turns.  N is exponential so L weakens faster when n decreases even if A increases.
:Jonathan 1 hour

=== Week 11/16/17 - 11/23/17 ===
Updated Box deisgn for PCB, added ring on the outside for incductor, new wire outlets, power switch input and LED display platform
:Jonathan 1.5 Hours
Tested device with stand-alone power from battery pack, test was successful!
:Jonathan and Nathan 1 hour
Worked on Poster
:Jonathan  3.5 Hours

=== Week 11/23/17 - 12/1/17 ===
Created Multicard software for 2 Cards
[[File:Video-1511720071.mp4|center|600px]]
:easily expandable to as many cards as needed simply by changing a few parameters
:Nathan 6 Hours
Overhauling posters
:Nathan and Jonathan 3 hours
Organized and Trial Run of Demo
[[File:Video-1511818740.mp4 |center|600px]]
:reserved an SU card reader for Friday Demo
:tried to swipe with reader for 1 cent BearBucks purchase
:was successful only when excluding Track 1 from device
:Nathan 3 Hours
Final Poster Desgin <br>
:[[File:MagSpoof Poster .pdf]]
:add state machine and cleaned up
:add PCB routing
:Nathan & Jon 3 Hour
Wait on Phone for USPS to Redeliver PCB
:had to redeliver because office closed on Friday during break
:waited on hold for an hour
:Nathan 1 Hour
Put together PCBS and demonstrated fully working device w/o box, printed final box
:Nathan and Jonathan 3 hours 
[[File:-Users-Severns-Desktop-IMG 1454.MOV|center|600px]]
Nathan and Jonathan box assembly and redo after melted H drive
:Nathan 5 hours,  Jonathan 3 hours
Full working device with box! (final log entry)
[[File:IMG 1468.MOV|center|600px]]