How to Go Postal

Step 6: The Juice

Depending on your circuit, you may be able to use a single battery. For the LED flasher circuit, I am using a 555 time that operates within a range of 3 - 15 volts DC. One 3 volt battery won't give you much operating life. So I make a six volt battery by using conductive epoxy or conductive tape to create a battery sandwhich that operates in parallel to give me a six volt bus. You can also use conductive velcro. When paper batteries become more common this will be less clunky.

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