Timer switch with Espruino board?

Good afternoon,

I'm a COMPLETE newbie in both Espruino and Electonics in general.
My purpose is quite simple: I'd like to use the Espruino as a timer switch.

More precisely, I have:

1. a (JSON-formatted) list of timestamps
   
2. a (completely independant, self-powered) circuit I'd like to close (I'd like to "put a wire" between two of its pins) for 1 second at those timestamps
   
3. a battery holder (http://www.aliexpress.com/item/F04639-4-AA-Battery-Box-Holder-of-Receiver-4-8v-W-JST-connector-As-Ek2-0914/900092076.html) with 4 AA batteries
   
   

Is this feasible with Espruino?

Many thanks for your help, or directions for help