Hi All,
I've got a dummy burglar alarm box that I want to add dual flashing LEDs (probably blue). I'm just getting into electronics and I'm hoping this could be a good first project.
Requirements:
Flash x2 Blue LEDs alternately
Alternate flash every 2 seconds (or similar)
Powered by x2 AAA's = 3v (lithium as they will need to work at low temps and last well)
From some research i've found out:
555's = require more than 3v to operate
Possible solutions:
LM3909
LM393
2N2907
BC548B NPN TRANSISTORS
But I'm not really sure what would work best - any advice?
Many thanks in advance,
I've got a dummy burglar alarm box that I want to add dual flashing LEDs (probably blue). I'm just getting into electronics and I'm hoping this could be a good first project.
Requirements:
Flash x2 Blue LEDs alternately
Alternate flash every 2 seconds (or similar)
Powered by x2 AAA's = 3v (lithium as they will need to work at low temps and last well)
From some research i've found out:
555's = require more than 3v to operate
Possible solutions:
LM3909
LM393
2N2907
BC548B NPN TRANSISTORS
But I'm not really sure what would work best - any advice?
Many thanks in advance,