1

I am currently working on a home automation system and one of the challenges is big distances between my sensors and the the Raspberry Pi.

For instance, I would like to monitor two rooms with PIR sensors. Connecting via cable wouldn't be an option since we are talking about over 7 meters.

PIR SENSOR

How can I wirelessly transmit sensor status (e.g.: PIR which is a simple high/low) to my Raspberry Pi?

2
  • 1
    I suggest you look at Arduino and wireless because if you can't use wire you'll need a remote processor and a remote wireless unit.
    – joan
    Apr 4, 2015 at 9:06
  • The same way everyone else does it -- sorcery! This seems a bit like "How do I ride a horse?" in that the answer is in the question, you wirelessly transmit it. No matter how you slice it, as joan points out additional equipment and/or very fast, tireless, probably tiny and winged porters are required. Note that wireless transmission requires power which is why it is often best done via a dedicated router.
    – goldilocks
    Apr 4, 2015 at 9:07

1 Answer 1

2

There are two ways you might do this. First of all, the simplest: Use two Raspberry Pis and connect them to a wireless network. Secondly, you could use Arduinos with RF wireless transmitters and a receiver on the Raspberry Pi. Take a look at the RasWIK (Wireless Inventors Kit - http://shop.ciseco.co.uk/raswik/) from Ciseco. It gives you an Arduino with built-in wireless capability and a GPIO plug-in board for the Pi allowing wireless communication between the two of them. Not sure how you'd do it for multiple sensors, but that's part of the fun.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.