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Article #274Re: OLinuXino, a serious Rasberry Pi competitor?
From: rickman
Date: Sat, 10 Mar 2012 17:44
Date: Sat, 10 Mar 2012 17:44
60 lines
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4136 bytes
On Mar 9, 9:09 pm, "k...@att.bizzzzzzzzzzzz" <k...@att.bizzzzzzzzzzzz> wrote: > On Fri, 9 Mar 2012 19:41:49 -0000, Paul <p...@pcserviceselectronics.co.uk> > wrote: > > > >In article <4f5a0371.3990093...@news.kpn.nl>, n...@puntnl.niks says... > > >> Paul <p...@pcserviceselectronics.co.uk> wrote: > > >> >In article <4f59791...@dnews.tpgi.com.au>, ke...@nowhere.com.au says... > > >> >> On 9/03/2012 8:54 AM, Paul wrote: > >> >> > In article<4f59230...@dnews.tpgi.com.au>, ke...@nowhere.com.au says... > > >> >> >> On 9/03/2012 3:00 AM, Paul wrote: > >> >> >>> In article<9rqf87Fad...@mid.individual.net>, 5...@2.5A says... > > >> >> >>>> On 08-Mar-12 11:51 AM, Nico Coesel wrote: > >> >> >>>>> Don McKenzie<5...@2.5A> wrote: > > >> >> >>>>>> On 08-Mar-12 10:23 AM, Paul wrote: > > >> >> Most USB wall warts are of the universal voltage type, you just buy a > >> >> cheap adaptor. I even have one that came with slip in connectors that > >> >> cover 90% of the power sockets in use in the world. > > >> >Reality is especially in classrooms budgets are tight so 20 to 30 of > >> >these is not prctical causes problems of time wasted, making sure all > >> >bits are together at beginning and returned at end of class, let alone > >> >whose got a dodgy one to debug. > > >> Thats true. I don't think the RP is very suitable for use in a > >> classroom. Its too fragile. > > >> >How many wall warts and the USB cables are speced for 5V @ 700mA. > > >> How many are not? Most are rated 1A and 2A is on its way. > > >The mahority of USB wall warts people have are for phones in the 100 to > >3000mA range to keep costs and weight down. > > 100mA would never charge a phone. 3000mA is much better. AFAIK, they try to > charge the phone at 1C. Cell phone chargers do not put out 3000 mA. They typically put out 0.5 to 0.7 mA... at least the ones I use do. I guess the "smart" phones that run down a 1500 mAHr battery in a day might charge at a higher rate. I think 100 mA is a bit light though. Rick
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From: rickman <gnuarm@gmail.com>
Newsgroups: sci.electronics.design,aus.electronics,comp.arch.embedded
Subject: Re: OLinuXino, a serious Rasberry Pi competitor?
Date: Sat, 10 Mar 2012 09:44:45 -0800 (PST)
Organization: http://groups.google.com
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