Imagine you have a sensor that needs to be monitored by many people, maybe from different locations.
Using ‘queues’ can provide a simple way to send messages to a single receiver, but what if you want more receivers to process your data? Further more, what if you want different receivers to get only the data that is relevant to them? Read more... (2035 words, estimated 8:08 mins reading time)
This little device is a Geiger counter. It measures ionizing radiation, which is radiation that carries enough energy to liberate electrons from atoms or molecules.
In a nutshell, it measures RADIOACTIVITY. You can get a Geiger counter here: https://www.sparkfun.com/products/11345 Read more... (1957 words, 7 images, estimated 7:50 mins reading time)
For a £80 I managed to get a new HikVision DS-2CD2032-I camera which supports a crazy 2048 x 1536 @ 20 FPS!
The camera can mount NFS as well as SMB/CIFS file shares, although a few people have had issues. And here is where my issues started (I did get it working). The camera management page has a section for NAS, and you can select you server, share, CIFS as well as credentials. Read more... (568 words, 11 images, estimated 2:16 mins reading time)
We have been playing quite a bit with the new Raspberry Pi, a previous article covered video recording using a USB Webcam and a neat little piece of software called Motion. If you haven’t seen that yet, have a look at http://sjj.azurewebsites.net/?p=701. Read more... (716 words, 2 images, estimated 2:52 mins reading time)
The concept of the Internet of Things revolves around connecting everyday (household) objects to the internet. The important thing to consider is that all this data is being generated, but is only useful if something is being done with it. The Microsoft Azure Service bus allows you to process queues of such data and make it more useful. Read more... (884 words, 5 images, estimated 3:32 mins reading time)
I just managed to get my hands on the Raspberry Pi (Model B+), so now i have a spare Model B, so what to build? I also have a USB Webcam (Trust Spotlight Webcam), so a DIY CCTV sounds like a great start. Turns out there’s several different applications to using the Rpi for home automation and other similar tasks. One of the most exciting projects is to use the camera for motion detection record video/images when motion is triggered. This blog posts provides a step by step guide on how I set up my PI and cameras, well as a live webcam server, and couple of other interesting things. Read more... (1560 words, 3 images, estimated 6:14 mins reading time)