Im looking to be able to read several devices to see if the device is open or closed, and be able to switch an output.
I did find a cheap solution that was able to read switched inputs, from Maplins, but now I cannot find the kit.
What I would like to do is build my alarm system with several PIRs so when movement is detected it triggers a output in a specific order (entry buzzer -> External Siren).
Does anyone know of a cheap PCI device, able to read 20-30 inputs, and write to 1-5 outputs?
Eventually I would like to use a MicroProcessor such as Ardunio, however for POC I would like to use a PC.