All, I have redesigned the board to incorporate @rickkas7 's Real Time Clock circuitry and all the other great suggestions from this group. My plan is to get a small batch of these made at MacroFab (if I am brave / confident) or have one more run of boards from OSHPark if I am not.
Changes - New Features:
- Physical switch to turn off everything on the board but the RTC battery backup for storage and transport
- Turning on the switch enables the RTC which can manipulate the EN line to reduce power consumption and then wake the device at a preset time.
- The Alarm functionality will also allow the device to “hard reset” or power cycle itself
Please look at the schematics and let me know if I have made any major mistakes.
I am not sure how to offer the RTC functionality if there is no LiPO battery. To be honest, I am not sure how important the RTC is if you are operating the Boron without a battery. Comments welcome here.
Once I am sure about the schematics, I will redo the layout.