open source data log system for packages and other shipments

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

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
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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/

14. Prototype #1

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