Blink Program uploaded to Attiny85 commit #:9791bc5 Intial sktech created 2005 by DojoDave modified by Tom Igoe Link to original sketch Nathan: 1 Hour
switched to just Arduino to debug input for double tap commit #: 9c45446 started redesign of firmware for multicard design 2
#Wustl box sync serial
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 Hoursįile:MagSpoof Presentation.pdf Jon: 1 Hour programming Attiny85 using Arudino for BLINK switches were too big -returned and order new smaller switches Nathan:10 min 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 Card indicator has an enable LED, and 2 LED's to mark which card is being used Design 1 has the use of a single input to change card and activate the device. may need to create a cell from battery packs higher current may affect power to chip, 3.7 V, already below operating voltage for chip
#Wustl box sync driver
We are using SN754410 as the motor driver higher current output than L293D preliminary design for multi-card circuit obtained permission from campus services for the project Download and use software to read swipe card info off of WashU id configure mac bootcamp for windows on Jon's computer
As well as this added functionality we plant to 3d-print a case for the device to provided a better aesthetic to the device. Three of these pins are taken by controlling the motor driver. The challenge comes in that our micro controller, the Attiny85, has only six configurable pins. We will have an indicator for the current card in use as well as a means to switch between cards. The inductor should acts as an amplifier to the RF signals that will be readable by a magnetic card swipers. The motor driver will output the RF signals to an inductor. As a basic design, we are using the Attiny85 to control the output of a SN75441 motor driver. Our project aims to expand upon this design by having multiple cards stored on the device. Our project is based off the the Magspoof project done by Sammy Kamkar. Our project aims to enable magnetic card communication of WUSTL ID cards and Dorm Key Cards with locks wirelessly.
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