[HacktionLab] BitCoin Exchange Hack/Crash

Sy sytaffel at riseup.net
Mon Jun 20 09:13:51 UTC 2011


Given we had a BitCoin workshop at BarnCamp I thought this might be of 
interest to people

http://forum.bitcoin.org/index.php?topic=19557.msg244622#msg244622

Sy

On 18/06/11 13:01, hacktionlab-request at lists.aktivix.org wrote:
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> Today's Topics:
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>     1. Re: BGG letter - power (Adelayde Skidmore)
>     2. Re: BGG letter (Adelayde Skidmore)
>     3. Re: BGG letter (llanos)
>     4. Re: BGG letter (Ben Green)
>     5. Re: BGG letter - power - Thermo electric (Andy S)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 17 Jun 2011 16:53:04 +0100
> From: Adelayde Skidmore<adelayde at riseup.net>
> To: hacktionlab at lists.aktivix.org
> Subject: Re: [HacktionLab] BGG letter - power
> Message-ID:<4DFB7860.9000603 at riseup.net>
> Content-Type: text/plain; charset=ISO-8859-1
>
>
>> This is about sound systems, but I guess power is power.
>>
>> http://mbharris.co.uk/12-volt-sound-system-battery-calculator/
> needs a bit of expansion that, perhaps I should move it over to the wiki
> for us all to be able to work on??
>> HTH
>>
>> G
>>
>> On Fri 17 Jun 2011 12:50:13 BST, protag [protag at aktivix.org] emailed
>> subject: "Re: [HacktionLab] BGG letter - power" saying ...
>>
>>
>>> Hi
>>>> Excuse my ignorance on this but could that kit provide enough power
>> to
>>>> run a LTSP suite with let's say 10 to 15 clients + the internet dish
>>>> (we are not sure yet if we'd need it but let's count on it).
>>>>
>>>> @BenG could you please give us more details of the amount of power
>> the
>>>> above kit would need?
>>>>
>>>> Cheers
>>>> Llanos
>>> By the way, sorry I missed you all at camp this year :(
>>> About power - there's a doc on the Hacktion lab wiki somewhere* talking
>>> about a similar thing to this. As I recall there's a long list of
>>> multiplications then a conclusion which I read as "we didn't like the
>>> answer so we tried again". :)
>>> Those six panels make 480watts when it's sunny. There are four batteries
>>> which are nominally 270Ah each.
>>> So, er, I dunno, four hours of serious sun is approx 2kWh per day
>> (or 200w
>>> for 10 hours)
>>> The reserve power of the batteries is probably 4 x 200Ah, so, 800Ah
>> @ 12v
>>> = 9.6kWh
>>> I did a half-baked hung-over skill-share on 12v solar&  batteries in
>> 2010
>>> (actually I can't remember the title, it was Chan's thing but no one
>> woke
>>> him up) - I'd like to do it again sometime but with some preparation and
>>> documents to hand... esp now I've seen that Prezi thing...
>>> Anyhow, I think the answer is, yes, enough power, even if it rains for a
>>> few days.
>>> sols
>>> ptg
>>
>>
>>> * it's here:
>>>
>> http://hacktivista.net/hacktionlab/index.php/Camp_for_Climate_Action_2008_Power
>>
>>
>>> _______________________________________________
>>> HacktionLab mailing list
>>> HacktionLab at lists.aktivix.org
>>> https://lists.aktivix.org/mailman/listinfo/hacktionlab
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>
> ------------------------------
>
> Message: 2
> Date: Fri, 17 Jun 2011 16:57:14 +0100
> From: Adelayde Skidmore<adelayde at riseup.net>
> To: hacktionlab at lists.aktivix.org
> Subject: Re: [HacktionLab] BGG letter
> Message-ID:<4DFB795A.9050106 at riseup.net>
> Content-Type: text/plain; charset=ISO-8859-1
>
>
>> Hi
>>
>> I've written the letter to be sent to the Green gathering people and
>> stick it on a wiki so people can modify it if you think it can be
>> improved. I will be sending it this eve if everyone is happy. Please
>> add questions/comments if you think I have missed something important.
>>
>> http://hacktivista.net/hacktionlab/index.php/LetterBGG
>>
>> It might sound a bit formal but I wasn't sure how to approach them
>> really...
>> cheers
> reads great Llanos, I've made one alteration to add that we did the G8
> in 2005 and the No Borders camp.
>
> news on the satellite dish: it seems I can get it online again, I have
> the modem and ODU (the laser gun bit) down in Weston and the dish and
> stand are (funnily enough) actually stashed in the barn at Highbury
> Farm!  I am still finding out the exact details about getting it up and
> running again, and what the cost might be...
>
> we could in theory offer a mobile upload hub for people in and around
> our space and therefore charge, either punters or the organisers....
>
> more when I know more.
>> Llanos
>>
>>
>> _______________________________________________
>> HacktionLab mailing list
>> HacktionLab at lists.aktivix.org
>> https://lists.aktivix.org/mailman/listinfo/hacktionlab
>>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 17 Jun 2011 16:16:08 +0000
> From: llanos<gorditazz at aktivix.org>
> To: hacktionlab at lists.aktivix.org
> Subject: Re: [HacktionLab] BGG letter
> Message-ID:<20110617161608.16695arj29o4h32g at newyear.aktivix.org>
> Content-Type: text/plain;	charset=ISO-8859-1;	DelSp="Yes";
> 	format="flowed"
>
> Quoting "Adelayde Skidmore"<adelayde at riseup.net>:
>
>>> Hi
>>>
>>> I've written the letter to be sent to the Green gathering people and
>>> stick it on a wiki so people can modify it if you think it can be
>>> improved. I will be sending it this eve if everyone is happy. Please
>>> add questions/comments if you think I have missed something important.
>>>
>>> http://hacktivista.net/hacktionlab/index.php/LetterBGG
>>>
>>> It might sound a bit formal but I wasn't sure how to approach them
>>> really...
>>> cheers
>> reads great Llanos, I've made one alteration to add that we did the G8
>> in 2005 and the No Borders camp.
> cool, I have now sent the email. I'll update you as soon as I hear from them.
>
>> news on the satellite dish: it seems I can get it online again, I have
>> the modem and ODU (the laser gun bit) down in Weston and the dish and
>> stand are (funnily enough) actually stashed in the barn at Highbury
>> Farm!  I am still finding out the exact details about getting it up and
>> running again, and what the cost might be...
>>
>> we could in theory offer a mobile upload hub for people in and around
>> our space and therefore charge, either punters or the organisers....
> I suppose if we charge the users we'd have to pay something to the
> organizers as we'll be making money? I'll raise the point with them
> when they get back to see what they prefer.
>
> I also had a chat with Jjj who is planning on getting involved with
> this, he's happy to lend us the big tend we had at barncamp 2010. It
> might need some repairs, he's going to check it this weekend.
>
> There's an irc chat on irc.psand.net - #bc we used for the
> organization of barncamp so that'd be a good place to communicate to
> get this one done.
>
> cheers
> Llanos
>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Fri, 17 Jun 2011 18:52:20 +0100
> From: Ben Green<ben at bristolwireless.net>
> To: hacktionlab at lists.aktivix.org
> Subject: Re: [HacktionLab] BGG letter
> Message-ID:
> 	<20110617185220.Horde.YA1eUmOelG9N_5RUKK-nhRA at slackmail.co.uk>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed; DelSp=Yes
>
>
> Quoting llanos<gorditazz at aktivix.org>:
>
>> I suppose if we charge the users we'd have to pay something to the
>> organizers as we'll be making money? I'll raise the point with them
>> when they get back to see what they prefer.
> We are using lots of expensive equipment which needs maintenance. They
> really should cover our expenses or we should keep any money we make.
> I don't think giving them a slice would be at all reasonable.
>
> 2p,
> ==
>   From Ben Green
>
>
>
> ------------------------------
>
> Message: 5
> Date: Fri, 17 Jun 2011 19:48:21 +0100
> From: Andy S<andys at bristolwireless.net>
> To: hacktionlab at lists.aktivix.org
> Subject: Re: [HacktionLab] BGG letter - power - Thermo electric
> Message-ID:<BANLkTinVc3E1ZXX==7nS2O4=ux9_xT7tzA at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On 17 June 2011 14:16,<sam at bristolwireless.net>  wrote:
>
>>   Anyhow, I think the answer is, yes, enough power, even if it rains for a
>>> few days.
>>>
>> Slightly off topic, I recently got one of these 50watt (rated) Thermo
>> electric generators.
>>
>> http://tegpower.com/products.html
>>
>> I have yet to try it out, so I don't know if the 50watts is achievable in
>> practice. I thought it was an interesting addition to the mix. We are often
>> stood around a wood fire during the evenings anyway..
>>
>> I will update the list when I actually get a chance to play with it..
>>
>> Thanks
>>
>> Sam
>>
>>
>> _______________________________________________
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>> HacktionLab at lists.aktivix.org
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>>
> What became of those batteries in your horsebox trailer Sam? No good? Poss?
> Flogged 'em??!
>
> A
>




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