How long will a Larson Scanner run on batteries?

[Jeff]

Hi,

I’ve got a project in mind for Maker Faire San Mateo 2014, and would like to use a Larson Scanner in it.  But, will a set of batteries last through the whole show?  Or do you have a wall wart you recommend instead?

Jeff

[ragstian]

Hi.

From the kit page;

The circuit runs on 2 AA cells, and has an external battery box with
integrated power switch. Under high-brightness mode: A new set of
alkaline AA cells would be expected to last about 60-80 hours
continuously, or 10-13 days if run 6 hours per day. Under low-power
mode– the default at turn on– a new set of alkaline AA cells would be
expected to last somewhere in the neighborhood of 400-700 hours, or
16-30 days if run continuously.

10 to 13 days if run continuosly 6 hours per day or in other words 5 to 6.5 days at 12 hrs per day.
Bring one set of spare batteries anyway. (Better safe than sorry!)

RGDS
Ragnar

[Jeff]

Thanks!  That was posted in 2009, so forgive me if I didn’t remember the details.  :)  Looks like low-power mode will be fine; plus, it’s not going to be on continuously.  Another circuit will turn it on/off.

[Author]

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