75% Less Power! - Saving the Planet With Motion Sensing and Image Processing In this blog, I was dealing with a conundrum on how to reduce the power consumption of my cool magic mirror that was always on, always drawing power. I considered options such as a PIR (Passive Infra Red) sensor and a doppler radar microwave motion sensor. The latter worked brilliantly except for a few too many false positives. Things got technologically fancy when I introduced a camera for motion detection and face recognition, even recognizing who is in front of the mirror! However, while it was fascinating, it upped the power consumption which was against our original goal. After combining... 26 June 2023
Heart Rate Free - How it works I have received several inquiries about my heart rate app and decided to share details about it. The app uses your phone's camera to perceive the faint changes in the light coming off the flash as blood flows in and out of your finger. I have also provided the demo code and some sample code segments to explain specific functions of the app and the augmented reality blog post for modifications. After a detailed explanation of the code, I show graphical presentations of how the app tracks heartbeats. I end off with a preview image of the sample project and... 25 November 2010