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Wanted Guidance for a Hobby Project - iSwitch

Ravi Hegde
Note: This was originally posted on 8th November 2011 at http://forums.arm.com

Here is some detailed explanation about the project I am plannign to do in iSwitch.

iSwitch is aiming at controlling the Home Appliances through an intelligent networked system.

First stage
Communication path: Switch ---> Device

- A touchscreen with a Tablet sized display, having icons like switches.
- Touch will be communicated through CAN bus or RS232, to the device, activating a miniature relay, which in turn controls the device.
  (Attached pdf of miniature relay intended to use. Please suggest if there is a good alternative)

Next stage 
Communication path: Switch ---> Central Controller ---> Device

- Centralizing the control of all the switches, by connecting all individual switches to a Master Central Controller.
-  Touch will be communicated through CAN bus or RS232, to the central controller, and this in turn activating a miniature relay of the device.
- Interconnected switches - i.e controlling the switch in one room through other room.

Further stage -
Provision to connect to internet, to control devices from remote place as well.
- Replacing CAN bus / RS232 to Central Controller and to the Devices with a Wireless Module, to make the switch more flexible. 


For this switch, I am planning to add Features like-
- Provision to set sreensavers, like in mobile/computers.
- Provision to install Gadgets, like Calender / Contact Book / Calculator / Games.
- Provision to connect switch board to internet.- Provision to add FM radios.
- Provision to add USB drives, for playing mp3/videos.
- Provision for intercom. 


I am planning to port Linux to ARM and using Android for these application development.

For Cortex A8, I could find U-Boot and Linux Images in http://arm.com/commu...ement/linux.php but Filesystem is not available here. Please guide me for selection of a right Processor (and also a Development kit), for which pre-built Bootloaders, Linux kernel images and Filesystems are available for making the Linux porting, as I am new to all these topics, and don't want to struck up in between for a long time.


Thanks a lot for your guidance.


With Greatfulness,
Hegde
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