this DIY motion trigger for a DSLR is a quick and easy build, and probably loads more fun. The BOM on [Jeremy S Cook]’s build is extremely short – just a PIR sensor and an optoisolator ...

[Micamelnyk] decided to build a solution to this problem in the form of a motion sensing alarm. The device is built around a Trinket Pro. The Trinket Pro is a sort of break out board for the ...

We do however like the way the motion sensors can be adjusted ... in weight. The Ring Alarm system is comprehensive, affordable, simple to set up, and easy to use – it's hard to think of too ...