A few years back I made a motion sensitive night light as a Mother’s day gift and while it worked pretty well it really chewed out the batteries. And as with all devices that eat batteries it eventually fell out of use. The standby current was around 4 mA due to the common LM324 opamp that was used to amplify the PIR motion sensor signal. The original enclosure was CNC milled from a bit of re-purposed apple which had a former life as a guitar body I built as a child. Apple happens to be my favorite wood, it’s rich and creamy and the project just needed some new electronic guts.
Really great craftsmanship on the enclosure, and I really like the choice of wood. You can pick up a similar PIR motion sensor in the Adafruit store.
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Adafruit interviews Dan Rasure, Managing Partner TechShop 2.0
Wearables — Simulate tattoos
Electronics — Heatsinks aren’t enough!
Biohacking — Getting More from Home DNA Testing
No comments yet.
Sorry, the comment form is closed at this time.