https://rickymoorhouse.uk/categories/raspberry-pi/ Recent content in Raspberry Pi on Ricky Moorhouse Hugo en-gb Fri, 11 Jan 2013 20:54:54 +0000 https://rickymoorhouse.uk/blog/2013/measure-sunlight-with-raspberry-pi/ Fri, 11 Jan 2013 20:54:54 +0000 https://rickymoorhouse.uk/blog/2013/measure-sunlight-with-raspberry-pi/ <p>For Christmas the girls gave me a Raspberry Pi, and for my first project I decided to try recording how bright the sunlight at our window is using an old Webcam.</p> <p><a href="https://rickymoorhouse.uk/images/raspberrypi.jpg"><img src="https://rickymoorhouse.uk/images/raspberrypi.jpg" alt="raspberrypi"></a></p> <p>The basic idea is:</p> <ol> <li> <p> Capture a photo</p> </li> <li> <p>Analyse the brightness of the photo</p> </li> <li> <p>Log it (and eventually publish to cosm)</p> </li> </ol> <p>So first of all getting the webcam set up - My webcam is a Logitech Quickcam Express, which proved to work nicely with the Raspberry Pi, after plugging it in, it showed up straight away in the output to lsusb: <code>ricky@pi ~ $ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. Bus 001 Device 004: ID 046d:0840 Logitech, Inc. QuickCam Express</code></p>