Android, without batteries
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Outline slides for DroidCon India 2015 proposal
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Android, without batteries
- 1. Android, without batteries Running commercial devices without batteries
- 2. Motivation • Android is now the most popular OS • Android devices have it all • connectivity, location, processing power & multimedia • Great choice to make solution centric custom devices • Making custom devices is expensive! • What if a common phone/tablet could be used for prototyping ? • Interested ? This talk shows you how…
- 3. In this Talk • A look at batteries • How battery reporting works • Changes required for using a power supply • Demo • Handling USB devices
- 4. What’s in a Battery ? -ve or GND +ve, aka Vcc (3.7V-4.2V) Battery Detect THERM for temperature sensing
- 5. Android Battery Stack Kernel Framework Application Fuel Gauge Battery Charger Battery Reporting, Actions Higher Level Decisions
- 6. Using a Power Supply • Considerations for power supply • Always present • 100% level • Modify • Kernel • Framework
- 7. Demo
- 8. USB Peripherals • Often used in applications • Supplying power is a problem • >500 ma? • Solution : Y cable