myDoorbell: The Power Supply
Introduction In my previous post, I described the nine modules that make up myDoorbell. While we could begin our discussion with any one of the nine modules, the one all others are dependent on is the power supply.…
Indie Educational Technology
Introduction Last week I spent some time at Davidson College discussing Personal APIs and Indie Educational Technology with faculty, students, and staff from several other institutions of higher education and commercial entities, Known and Reclaim Hosting, that facilitate…
myDoorbell: High Level Design
Introduction In my previous post I described the resources available in the wiring box where myDoorbell will be installed. As illustrated in the following figure, the available resources consist of a 16 Volt AC source and…
myDoorbell: The Existing System
Introduction In my previous post I declared my intent to refresh my technical skills through the development of an amazing doorbell, myDoorbell. In this post I describe a doorbell system found in a typical U.S. residence…