November 2, 2012 Add as a preferred source on Google Add as a preferred source on Google If you’re looking for something to do this weekend, consider this PIR (passive infrared) Sensor Alarm project.
Ring Alarm is a spectacular DIY home security system with the potential to be much more, but don’t buy one if what you’re really looking for is a smart home solution. Ring builds some of our favorite ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results