Main Site Documentation

Date/Time

#1

Looking for some one to point me in the right direction again.

I want to provide date/time functionality for my users. I do have power “all the time” provided by a battery; but I don’t want to keep the cobra 2 running all the time b/c of its current draw.

Does anyone know of a low power IC out there which would keep time for me?

Justin

#2

You just have to ensure that RTC pin is power supplied.

#3

Add RTC battery and hibernate the Cobra II. You can wake it up with an RTC alarm or external interrupt.

#4

Another option if you have the Cobra 2 WiFi board and assuming you are connected to a network is to get the time from a time server. I have this on one project where I don’t currently have a battery fitted. :slight_smile:

#5

Do you have any measurement on a hibernated Cobra II board power usage?

#6

@ njbuch - Sorry, I do not.