[Noisebridge-discuss] portable power/battery question

[Lee Sonko]

Hey Lewis, how did your portable sound rig go?



On Fri, Jun 1, 2012 at 3:25 PM, Lee Sonko <lee at lee.org> wrote:

> Take a look at how we calculated a battery budget on SWARM
> http://wiki.orbswarm.com/index.php?title=Power
>
> Short form:
> Calculated a power budget. Strung together some used sealed lead acid
> batteries (look in the Suppliers page<http://wiki.orbswarm.com/index.php?title=Suppliers>for some cheap ones), charge them with a car charger. Profit!
>
> You'll get 20% longer run-times if you use all DC components instead of
> using an inverter. But it's sooo much easier to use an inverter, do that
> first!
>
> If you've got too much money, use lithium batteries instead and the rig
> will be lighter. Sorry, I can't help with pricing out that system.
>
> Tell me how it goes!
>
>
>
> On Fri, Jun 1, 2012 at 8:59 AM, Lewis Scaife <lewis.scaife at gmail.com>wrote:
>
>> Howdy. First post to this mailing list. Thank you for existing.
>>
>> i am attempting to put together gear for portable electronic music
>> performance, probably set up on a bike trailer.
>> i will be using an arduino-based infrared gestural midi controller called
>> Hollowbook - i've demoed it at Noisebridge a couple of times, you can check
>> it out here: http://youtu.be/2OmqivEHpC8
>>
>> My electrical knowledge is limited. my goal is purchase a durable and
>> lasting portable power system for the following items:
>>
>> 40w 19v DC 2.1A power adapter for Asus ul20a laptop
>> 9v AC 1A adapter for m-audio quattro
>> 7.5w 9v DC 500mA adapter for hollowbook (power over usb from laptop is
>> not an option)
>> POSSIBLY a boom-box style speaker system of modest volume but
>> undetermined wattage...
>>
>> i have been looking into portable power systems such as these<http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Dautomotive&field-keywords=portable+power> found
>> in a cursory Amazon search. i hoped to get some opinions from more
>> experienced people as to what would be a good move. an option which i have
>> considered is to purchase a separate battery powered amp to replace the
>> speaker system if there would be too much load on a portable power supply
>> otherwise. i would hope to be able to perform for at least 2 hours. i'm
>> absolutely not looking for loudness - my goal is to fly below the "no
>> amplified music" radar and play downtempo, instrumental chillout music with
>> an awesome and unique midi controller. Valencia street has a lot of foot
>> traffic at night and would be the perfect place to drum up a local fanbase.
>>
>> Thank you sincerely for your time. i hope my post was in good taste and
>> finds you all well.
>> best wishes
>>
>> Lewis
>>
>> you can hear my music at http://music.ratsofnym.com  ... it's a
>> spaghetti-western themed instrumental hip hop album... please let me know
>> if you would like to own the album, i'd be happy to give you a free copy of
>> either the mp3s or an antiquated compact disquette.
>>
>> L
>>
>>
>>
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>>
>>
>
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