Hardware controller options

[tritium6]

I have a bunch of wired sensors in my house that are currently not connected to anything. The sensors are temperature sensors and motion sensors. I want to write my own software that will read motion sensor status and toggle lighting scenes for my RadioRa system. Similarly my software will read temp sensors and adjust thermostats.
 
I read a lot of posts here about Elk M1 and Omni II. What are my options for device controllers to connect the sensors to? Just these?

 

[pete_c]

Curious what kind of temperature sensors you have.  My OmniProII panel has propietary HAI Temperature and temperature / humidity sensors.

 

[tritium6]

I don't have the sensors yet. Sounds like I need to re-think this part. 
 
Can you recommend a sensor that, rather than integrating directly to a thermostat, will connect a component that will allow me to query that component to read temperature? I think that component could be an Arduino or Raspberry Pi, but I'd rather use an off the shelf system.

 

[pete_c]

I have Leviton / HAI temperature and temperature and humidity combos here. 
 
I also have multiple 1-wire networks with multiple sensors.  (many are combo temperature / humidity).
 
I query the Leviton / HAI temperature sensors with my automation software and mix that in with the 1-wire connections.

 

[tritium6]

What do each type of the sensors plug into? I don't want them to plug directly into the thermostat.

 

[pete_c]

The HAI temperature and temperature humidity sensors plug into the HAI OPII panel.  Power and a zone per each sensor.
 
Combo
 

 
Temp