piranha: red origami crane (Default)
external battery pack external battery pack

for my digicam, collected parts. actually it will take 7 batteries (8.4V). this is a dirt-cheap setup, and geared towards using what i already have, rather than going for the MOST POWER option.


if i went for optimizing power, i'd use a honking lead-acid battery. but i have oodles of NIMH batteries in size AA, because all my portable electronics run on those. the camera's internal battery outputs a meager 650 Ah, and it doesn't last very long even if i use energy saving methods (turn the LCD screen off, don't use the flash). which is no big problem when i am near a socket to plug in the fast charger, but that won't be possible much during the bus ride, nor when exploring montréal. a second battery like this costs at least C$50, which would give me nothing more than another puny battery. with the AA batteries i have, i can boost the output from 1200 up to 2300 Ah (depending on which set i use), which should last me a good deal longer. and i have more than one set of batteries, so that extends it even more.

cost of parts: battery holder @ 2.99, coax plug @ 1.75, 9V snap connector @ 1.00 for a total of C$4.75. am cannibalizing an old phone cord for the wire. can't beat that.

a little soldering, and tomorrow a usage test, and i'm hopefully be all set. i would have bought a project box because i don't want the pack to float around loose in my bag, but the paramour suggested that a simple drawstring bag would do -- indeed it would.
piranha: red origami crane (Default)

the montreal project the montréal project

this is the yarn i am taking with me. it'll be a freeformy something of spirals and sprays; maybe a long vest. freeform is ideal for the bus; lots of small pieces as the mood strikes me. the colours are not quite right; the white balance was off under the light in my office and i didn't notice until i had taken the battery out of the camera for recharging. and now i am too lazy to fiddle with the gimp. i'll take another picture tomorrow in daylight. everything is slightly more cyan-shifted in reality, and the reds are not quite as intense.

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piranha: red origami crane (Default)
renaissance poisson

July 2015

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