Here's a cool way to put your Arduino into an ultra low power deep sleep state, then wake up at a very precise interval, like for 10 seconds, minutes, hours, days, and so on. I'm using an external RTC (Real Time Clock), specifically, the MCP7940. Here's the wiki that I made for that board: http://www.kevindarrah.com/wiki/index.php?title=RTC_Board
RTC Video I did here:
https://www.youtube.com/watch?v=UN56GDBot3Y
LOW Power Arduino Video here:
https://www.youtube.com/watch?v=urLSDi7SD8M
The CODE is here: http://www.kevindarrah.com/download/arduino_code/MCP7940_DEEPSLEEP.ino
Check out my Tindie store (trigBoard is available) https://www.tindie.com/stores/kdcircuits/
Thanks to all the Patrons for dropping a few bucks in the tip jar to help make these videos happen!
https://www.patreon.com/kdarrah
Twitter: https://twitter.com/KDcircuits
For inquiries or design services:
https://www.kdcircuits.com