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Thread: Teensy 2.0 Real Time clock

  1. #1
    Junior Member
    Join Date
    Nov 2012

    Teensy 2.0 Real Time clock

    Is there anyway to get the Teensy 2.0 to keep time? With the Teensy 3.0 there is the ability to put a crystal and a backup battery. Can this be done with Teensy 2.0?

  2. #2
    You have to use an additional chip for that. Like a DS1307 or a DS3234. The DS1307 needs an additional crystal, and both need a power source to keep time when the teensy is not powered.

  3. #3
    Senior Member Constantin's Avatar
    Join Date
    Nov 2012
    In the yard with a 17' Dia. Ferris Wheel
    Instead of the DS3234, I'd consider the I2C version, the DS3231. Much less fiddly to set IMO, just as accurate, and many commercially available solutions. I personally had great luck with the Chronodot from Macetech. All you need is two lines, two pullup resistors, and there are many libraries available.

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