> Trying to run a PIC 16F84 with 2V i came to tihnk if there is any
> possibilities to make a LED to run with only one NiCd that has the output
> valtage of about 1.2 V. Led needs about 1.6 V.
> The system should not have any fancy IC's and it should fit in the size of
> half of an AAA-cell.
The LM3909 (8pin, 1 cap)will flash an LED off a single cell.