teency 3.2 and internal clock and backup battery

[philip.porhammer]

for most clocks I build I ha have used "SparkFun DeadOn RTC Breakout - DS3234". I would like to use the Teency with a 3.2 crystal and a backup battery button.
are there instructions and a SW lib for that?

 

[MichaelMeissner]

Here are some older posts about it:

• https://www.pjrc.com/teensy/td_libs_Time.html#teensy3
• https://forum.pjrc.com/threads/26538-More-hilarity-re-creating-a-TXCO
• https://forum.pjrc.com/threads/24628-Interesting-Temperature-Data

 

[PaulStoffregen]

for most clocks I build I ha have used "SparkFun DeadOn RTC Breakout - DS3234".

Sparkfun's library looks like it should work on any Teensy board, since it just uses the ordinary SPI library and Arduino functions.

https://github.com/sparkfun/SparkFun_DS3234_RTC_Arduino_Library

I would like to use the Teency with a 3.2 crystal and a backup battery button.
are there instructions and a SW lib for that?

Yes, details here:

https://www.pjrc.com/teensy/td_libs_Time.html