A friend needed a light for a basement storage room with no mains electricity available.
assume 1 minute of ON time per day,
works from cheap and common batteries,
long battery life (1 year+),
possibly hands-free operation.
I decided to use a widely available hobby PIR sensor board as the switch and design around that, aiming for 2 years of battery service.
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!
Maker Business — Pololu’s New Machines
Wearables — Mystical elements
Electronics — Disable unused channels!
Biohacking — Two Blood Meters to Start Your Biohacking Adventure
No comments yet.
Sorry, the comment form is closed at this time.