bachelor-thesis/notes/time_report.md

2022-09-19

• Plan meeting times with Reto

2022-09-22

• Meeting with Reto
• Testing measuring magnetic field when CPU is stressed out
  • No real change measurable

2022-09-23

• Test out multiple speakers
• Test measuring magnetic field of speakers while playing sounds
• Research functionality of a speaker
• Start work on the project plan using pgfgantt

2022-09-25

• Another test with a speaker
  • No change measurable in magnetometer even if I can see the coil vibrate
  • I assume the change in the magnetic field is too small to be measured
• Finish project plan

2022-09-26

• Test Magnetic Field of Laptop CPU
  • I can clearly see the spikes
• Another try on the Raspberry Pi
  • Still nothing accurate
• Research other solutions
  • https://www.cs.sjtu.edu.cn/~yichao/pmwiki/assets/publications/mobicom17_pan.pdf
    • Using magnetic induction from a CPU and capture using magnetometer from a smartphone

2022-09-28

• Raspberry Pi tests
  • Not working either with other cables or power supplies
• Prepare meeting notes for tomorrow's meeting
• Research more similiar projects
  • http://www.freelinc.com/technology/
  • https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6695870/
  • https://www.researchgate.net/publication/241629739_Near_field_magnetic_induction_Communication_in_Body_Area_Network

2022-09-29

• Meeting with Reto
• Experiment more with smartphones, speakers and magnets

2022-10-03

• Create videos of speaker
  • https://www.youtube.com/watch?v=fqUFUQZMPwI
• Create App to utilize CPU a Smartphone

2022-10-04

• Adjust Project Plan to include hardware steps
• Start work on introduction
• Setup citations for thesis documents

2022-10-05

• Work more on introduction
• Prepare tables for requirements
• Add screenshots and data of Android CPU measurements
• Record visualisation of speaker vibration using a laser pointer
  • https://www.youtube.com/watch?v=L_ZBn6RVJ88

2022-10-06

• Mail Exchange with Reto about Experiments
• Work on personas

2022-10-07

• More experiments and data analysis
• Decide on CPU as sender element

2022-10-10

• Create small application to create stress on CPU using web workers

2022-10-12

• Personas
• Use Case Diagram
  • https://www.plantuml.com/plantuml/uml/PL1DIyGm4BtdLppsdeCVHv45z-Z9HJsFwTW6soPafeA8_zrfZ53h9OGtxsFU74Mfw3ADRkHNXIQKs0-ABXOE6jFiA6WgEFFSSG49f24F73Y-_s35EI1JUAEUySml4fNnQHYm20SInc5rm8cK3glYyUwYZktvsehlAMlAU-rJDCTVuwQ_talFapN9Gvh_HRTLj-cNVncdA7caZotZglfR3cwyjuO2xs_htZPhcFcilye-MZ-xupS0
• Rough description of requirements

2022-10-13

• Meeting with Reto
• Personas
  • Eve
    • Wants to transmit data in an airgapped system
    • eg.

2022-10-25

• Flesh out requirements
• Signal
  • Preamble
    • 3 Hi
    • 1 Low
    • 3 Hi
• Protocol
  • Manchester Encoded Bits
  • Clock of 250ms

2022-10-26

• Start documenting solution
• Start documenting some preliminaries
• Update requirements and personas
• Create mockups for app and website

2022-10-27

• Prepare meeting notes
• Meeting with Reto

2022-10-28

• Reschedule meeting with expert

2022-10-31

• Research other signal protocols

2022-11-01

• Ask expert about meeting date
• LoRa
  • Preamble
  • Header
  • Payload
  • CRC

2022-11-02

• Update chapter solution with the packet format