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Why OpenLoggage
0 Motivation:
0 What happens to my luggage after check-in counter at
the airport?
0 Hot? Cold? Dropped? Opened?
0 Open =
0 open source hardware and software
0 “crystal-clear”
0 Loggage =
0 log + luggage
Disclaimer
0 Rules & regulations
0 Does FAA allows luggage monitors?
Features
0 In scope
0 Temperature
0 Light (see if luggage was opened)
0 Shock/drop (accelerometer)
0 Log  microSDcard
0 Out of scope
0 GPS due to antenna
0 On the fence
0 Built-in li-ion charger
0 Serial or USB interface
Requirements
0 Battery operated: Low power
0 Physically Robust: single pcb board
0 Breadboard not acceptable
Step 1: block diagram
Power Management Tip 1
0 Drop from 5v to 3.3v
0 Drop from 16Mhz to 8Mhz
0 Set uC into Sleep mode
44.1
32
0.495
0
5
10
15
20
25
30
35
40
45
50
Arduino Arduino Sleep OLGA w/ sleep
Arduino Current Draw Improvement
Current
More info
0 Blog posts in sept/oct 2013
0Calculating Arduino Uno power draw
http://gadgetmakersblog.com/arduino-power-
consumption/
0Calculating Atmel328 power draw
0http://gadgetmakersblog.com/power-consumption-
arduinos-atmega328-microcontroller/
Power Management Tip 2
0 Switch Power to peripherals
0 User microcontroller pin if <30-40mA
0 User FET to if >30-40mA
Power Management <30mA
0 uC pin to control power
0 Add jumper for multimeter 51uA
Power Management >30mA
0 Add Fet to switch power
0 Remeber to make ALL lines inputs!!!
Idle current= 20mA
Active current = 50-60mA
Low Price! $2 vs $6.50
0 Fake USB to Serial IC (blog post)
0 http://gadgetmakersblog.com/2/
Prototype #1
Next Steps
0 Make smaller
0 uC from DIP to QFP
0 Fix bugs
0 Remove test points
Thank you!
0 Twitter: @RamosIgorS
0 Site: OpenLoggage.com
0 Site: GadgetMakersBlog.com

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OpenLoggage - open source data logging platform

  • 1.
  • 2. Why OpenLoggage 0 Motivation: 0 What happens to my luggage after check-in counter at the airport? 0 Hot? Cold? Dropped? Opened? 0 Open = 0 open source hardware and software 0 “crystal-clear” 0 Loggage = 0 log + luggage
  • 3. Disclaimer 0 Rules & regulations 0 Does FAA allows luggage monitors?
  • 4. Features 0 In scope 0 Temperature 0 Light (see if luggage was opened) 0 Shock/drop (accelerometer) 0 Log  microSDcard 0 Out of scope 0 GPS due to antenna 0 On the fence 0 Built-in li-ion charger 0 Serial or USB interface
  • 5. Requirements 0 Battery operated: Low power 0 Physically Robust: single pcb board 0 Breadboard not acceptable
  • 6. Step 1: block diagram
  • 7.
  • 8. Power Management Tip 1 0 Drop from 5v to 3.3v 0 Drop from 16Mhz to 8Mhz 0 Set uC into Sleep mode 44.1 32 0.495 0 5 10 15 20 25 30 35 40 45 50 Arduino Arduino Sleep OLGA w/ sleep Arduino Current Draw Improvement Current
  • 9. More info 0 Blog posts in sept/oct 2013 0Calculating Arduino Uno power draw http://gadgetmakersblog.com/arduino-power- consumption/ 0Calculating Atmel328 power draw 0http://gadgetmakersblog.com/power-consumption- arduinos-atmega328-microcontroller/
  • 10. Power Management Tip 2 0 Switch Power to peripherals 0 User microcontroller pin if <30-40mA 0 User FET to if >30-40mA
  • 11. Power Management <30mA 0 uC pin to control power 0 Add jumper for multimeter 51uA
  • 12. Power Management >30mA 0 Add Fet to switch power 0 Remeber to make ALL lines inputs!!! Idle current= 20mA Active current = 50-60mA
  • 13. Low Price! $2 vs $6.50 0 Fake USB to Serial IC (blog post) 0 http://gadgetmakersblog.com/2/
  • 15. Next Steps 0 Make smaller 0 uC from DIP to QFP 0 Fix bugs 0 Remove test points
  • 16. Thank you! 0 Twitter: @RamosIgorS 0 Site: OpenLoggage.com 0 Site: GadgetMakersBlog.com