156B Week 3

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Major modifications made to geometry main rig

    • Sponsor had a lot of small things he wanted changed

  • Almost prepared to assemble a prototype of rig

  • Sensors decided on for the most part, need to order, start programming, testing, etc

Accomplishments from Previous Week

• • Updated CAD

    • Design of several different 80/20 to PVC attachments

  • Raspberry Pi on the way

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Biteplate - Tristan/Nicole

    • Water-tight chamber to house hall effect sensor

    • Low density foam for use with biteplate and hall effect sensor (West Marine?)

      • Simple tests to be done in designated workspace

    • Selection of proper magnet for use with hall effect sensor

  • Final CAD iteration of rig - Julia

    • Raw materials can be purchased after and commencement of construction

    • Connection between 80/20 and PVC

    • Restoring force implementation on 80/20 angle brackets used with operant paddles

  • RPi, soundcard purchasing and sensor/programming research - Aryo

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Navy has silicon solution already in use for waterproofing electronics hardware

  • Build mockup/prototype soon

    • Final CAD to be completed by end of this week

  • PVC anywhere that sonic interference may be an issue

    • CAD for rig altered to include both PVC and 80/20

  • DAC with frequency >500KHz

    • We aren’t actually sure if this is necessary

  • Meeting with sponsor Thursday, 1PM

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Anodization/corrosion of 80/20

    • Still looking into this

  • Suggested hall effect sensor on biteplate

    • Using hall effect sensor with biteplate, determining magnet strength, planning integration with existing biteplate design

Risks and Areas of Concern

• • Connection from 80/20 to PVC

  • Waterproofing Hall effect sensor for biteplate

  • Suitability of 384 kHz DAC/soundcard

  • Scale of biteplate currently in use

    • Sponsor sent CAD but lacks sizing scale

Resources or Information Required but not Available

• • High frequency easy to interface with RPi DAC (>500KHz?)

  • Connection from 80/20 to PVC

Schedule

• • Working prototype in the coming week

  • Electronics on the way, start installing software and programming sensors

Budget (list amount spent and amount remaining)

• • • • $49.93 spent

      • $950.07 remaining

Progress on Report and Webpage

• • Not much this week