Attended: May Chen, Kristie Lee, Jon Liang

• Documentation for testing plans
  • Create a checklist for quality assurance (Google Sheets)
    • One checklist for an unpopulated PCB
    • Another checklist for a populated PCB
• Documentation for Apple
  • Purpose
  • Features
  • How to test features
  • Ranges for test values
• Verification board
  • Firmware
  • Plugs in to unit test Apple
    • Components powered on
    • Checks MCU programmability
    • Checks I2C functionality
      • And possibly other functions of MCU

• What to look out for during continuity checks
  • Make sure components that need power are connected to power
  • Check power planes for short circuits
  • Check other connections for short circuits
  • Check for properly connected signals
    • Incorrect wiring
    • Thin traces
• Populated board
  • Two ways to populate board
    • Power fewest but most critical components
    • Populate entire board and test everything at once
  • How to test a populated board
    • Verify with circuit schematic
    • Check component's voltage values
      • Sensors should match datasheets
    • Check reference planes are correct
    • Check that it is grounded properly
• Verification (after board has been populated)
  • Check MCU programmability (firmware)
    • Read/Write/Save/Run, etc. functionality
    • Unit test I2C (or PWM)
  • Then, upload full script
• Verification board
  • Purpose: So hardware can test their board without handing it off to firmware
  • MCU on the verification board will program Apple's ATMEGA
    • Firmware script will tell the verification board to program whatever it is connected to
    • Will check I2C (or PWM or whatever function WeatherBox is using)
  • We will not be doing hardware/voltage checks on the verification board
    • Too complex; basically going into power systems and creating a multimeter with a voltage reading sensor
  • We will not be doing power measurements
    • Theoretical approach: take source and all other components' characteristics and calculate over time
    • Experimental approach: power boards and see how long it lasts (we know the board lasts several days so this is not very feasible)

• EAGLE tutorial
• Find MCU for verification board
  • Check compatibility with ATMEGA

• Need assistance finding an MCU
• Unsure of who to go to for hardware help: Kenny or Jon?

Contributing authors:

Created by cobatake on 2015/12/02 02:29.