Table of Contents
Cranberry Status Meeting #3 - September 23, 2015
Updates
Problems
Reminders
Authors
Cranberry Status Meeting #3 - September 23, 2015
Attended: Brandon, Kim Pee, Jon
Updates
Not all parts working properly
Solar charging chip - due to chip layout
Assemble and test boards
Work with Kenny to program boards
Make note of what is not working properly
Verify connections and voltage measurements
Isolate hardware problems
Revise current design
Recreate part library in EAGLE
Library for parts available, but not up to quality
Remake parts for more control with layout
Must use 2 in. x 2 in. profile
Freedom with layout
Incorporate 4 layer board
Tighter and cleaner layout, proper clearances
Isolate traces on top and bottom layers
Central layers ground and power
Alternate packages and parts - design preferences
Similar or better, worth cost?
Consider more efficient sizes/form factors
Go through schematic, understand connections
How parts work with each other
Create more professional schematic
Current schematic unprofessional due to layout
Group sensors, interfaces, communications, power, etc.
Documentation in schematic
Current documentation lacking
Currently no uniformity
Provide labels and extra information (placement layouts, no empty pads, dedicate space)
Effective use of space - no empty areas / wasted space
Debug lines traced, Vias for power, etc.
Resistance values shown for schematic
Label part values
Part layout at own discretion
Wire overlapping unwanted
Microcontroller layout same as on board chip
Pins in order
Good documentation for software
Divide work between members
Clean and update schematic
Recreate parts
Jon will find board and assist with soldering QFN and small ICs
Manufacturing
High quantity, cheap - Chinese vendor
Quality, price not a problem - Advanced Circuits
Quality, time - Bay Area Circuits
components
Barometer, solar irradiance
Solar charging chip
Voltage regulators
XBee
Problems
N/A
Reminders
Prepare for proposal presentation on Saturday, September 26
Meeting with Dr. Kuh for Weekly Update next week
Plan to start assembly next week and begin testing in coming weeks
Look over schematic and other documentation to understand design
Authors
Contributing authors:
kpcastro
Created by
kpcastro
on 2015/09/26 07:34.