Re: [avr-gcc-list] Simulating x-10 controller and dealing with home automation network of simple nodes with AVR

[Reza Naima]

Ah, I'm working on a home automation system as well, though I've decided 
to go the PC route to control the systems, as it's going to be fairly 
complicated.  My linux-based system encorporates :

so far:

   *  X10 lights, using bidirectional PC gateway (does macros and
     stuff, $35 off ebay - rs232 interface, linux based software to
     control).  I've got all the wall outlets replaced with x10 stuff
     -- check out http://automatedoutlet.com/home.php, good prices.
   * 4x security cameras ($30/each + $100 4 port cctv capture card)
     (zoneminder backend),
   * 7" touchscreen LCD ($250, to be mounted in wall) (usb interface,
     linux drivers included with it!!)

need to add (will be atmega based device):

   * temerature and humidity (?) sensors in rooms, running via phone
     wires.  I'm thinking the dalas 1 wire bus, but not sure if they
     support a humidity sensor.
   * furnace control  (on/off for now, but will add butterfly valves to
     ducts so I can control the level of heat i want in each room.
   * need to reverse engineer the 2-wire bus my ademco alarm system
     uses so i can interface into it, view status of sensors, and
     remote arm/disarm as well as act on commands.  I've got a key-fob,
     and I want to map a keypress to "turn off all lights in 2 minutes"
     for when I'm leaving the house, etc...

software wise, big project will be

   * integration to mythtv frontend so that I can view security cameras
     when motion is detected overlayed onto the TV I'm watching, etc... 
   * frontend for LCD touchscreen to navigate climate control /
     lighting / music / security cameras p

Reza



Robert Rozman wrote:

> Hello,
>
> after quite some time I'm coming back to developing avrgcc 
> applications for
> Atmel Mega 103 and next step mega128can.
>
> I've designed prototype of custom home automation system (based on 
> Canbus devices and rs232 Gateway).
>
> On top of home automation network there is main controller (based on 
> small
> microcontroller) with rs-232 interface that can be connected to PC. Now I
> have several dillemas and would kindly ask for quick answers:
>
> - what free rtos could be best at the moment for developing 
> applications ?
> Is AvrX the best solution ?
>
> - I'd need to implement some sort of home automation state machine, that
> would implement event based commands and also main loop that would be
> checked in regular time intervals whether there are any timed commands 
> to be
> released. Any idea, similar code, pointer to more info ?
>
> - how to interface outside world to gain as much user freindliness for
> configuration and control at low cost (preferably no cost) :
> Main idea is to mimic some X10 two way controllers (to act exactly os 
> one of them) - but they have ability to implement also  time or event 
> based macros. What engine could be used to
> implement this ? Is there any project on simulating x-10 controller 
> with AVR ?
>
> - I'd like to have dynamic specification of all devices present in home
> automation system - where each type of device has its own functions 
> and data
>
> - I'd like to have some sort of dynamic descriptive data structure that
> could be parsed few times a second for timed events to occur (operating
> devices at some certain time) and also event driven parser that could
> trigger actions according to event and also some other conditions (time,
> state of devices, ...) that happend.
>
> I'd like to have above in flexible way to be able to easily reconfigure
> system from PC or any other client with some simple set of commands...
>
> Any pointer, example code, more info ?
>
> Thanks in advance,
>
> regards,
>
> Rob.
>
>
>
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