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Ezcal edited this page Oct 10, 2015 · 21 revisions

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Current Homework: 2 - Initial Proposal

Product Name TBD: A Digital Level

The project we have decided to move forward with is a digital level using an accelerometer. The microcontroller will be an Atmel ATmega328. Depending on the inclination of the level when it is placed on a surface, indicator LEDs will be lit up in imitation of the bubble on an analog level. There will be a power switch on the side to turn it on and off, and it will be powered with lithium ion batteries.

Requirement checklist:

  • 1 Sensor? Accelerometer
  • 1 Actuator? Multiple LEDs
  • Digital or Analog Processor? ATmega328
  • Safe? Yes
  • Schematic in progress using EagleCAD
  • PCB will be correctly sized
    • May have second PCB for LED assembly
  • PCB designed from scratch
  • >= 25% surface mount components: 100% will be surface mount
    • Components will all be larger than 0603
  • Will be built by our hands
  • Enclosure will be 3D printed
The Decision Matrix we used is here:
Miguel's Scores
. Ease Cost Interest Usefulness Style Totals
Laser Trip Wire System 1 3 2 5 3 14
Pulse (Heart) Monitor 5 4 4 5 4 22
Fingerprint Door Lock 4 3 4 4 4 19
Digital Level 4 4 2 4 2 16
Sabin's Scores
. Ease Cost Interest Usefulness Style Totals
Laser Trip Wire System 3 5 2 3 2 15
Pulse (Heart) Monitor 4 4 2.5 4 3 17.5
Fingerprint Door Lock 3 4 3 4 4 18
Digital Level 4 4 3.5 3 3 17.5
Christina's Scores
. Ease Cost Interest Usefulness Style Totals
Laser Trip Wire System 2 1 3 2 3 11
Pulse (Heart) Monitor 3 3 3 4 4 17
Fingerprint Door Lock 3 3 3 4 3 16
Digital Level 3 4 4 4 3 18
Cal's Scores
. Ease Cost Interest Usefulness Style Totals
Laser Trip Wire System 3 4 3 3 2 15
Pulse (Heart) Monitor 4 3 2 3 2 14
Fingerprint Door Lock 2 2 4 4 4 16
Digital Level 3.5 3 5 5 3 19.5
Overall Scores
Laser Trip Wire System 55
Pulse (Heart) Monitor 71.5
Fingerprint Door Lock 69
Digital Level 71

Alternate Idea Paragraphs

Laser Tripwire

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Pulse Monitor

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Fingerprint Door Lock

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Previous Homework Assignments:

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