Observation notes (with equipment details), photos, sketches, reviews, software tips, random thoughts, by an amateur astronomer.
Tuesday, February 08, 2011
tiny 393s
Picked up a couple 393 batteries for the digital pen. InfiniCell 2300103A (aka SR48W) from The Store Formerly Known As Radio Shack. Silver oxide, 1.5 volts.
Also activated that crazy 3-year replacement plan thing.
I made a little plastic tab to put between the batteries to open the circuit on the pen. Prevent drain when I'm not sketching or logging on paper.
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