Marcelo Toledo

startups, empreendedorismo e tecnologia

Hardware

Chip offers 5Gbps short-range wireless

A new wireless technology has been developed that should serve as an extremely fast replacement for technologies such as Bluetooth and ultra-wideband (UWB), says Australian research group NICTA. Nicknamed GiFi, the process would use a chip (not pictured) that transmits at an extremely high 60GHz frequency versus the 5GHz used for the fastest forms of Wi-Fi. The sheer density of the signal would allow a chip to send as much as five gigabits per second. While the spectrum would limit the device to the same 33-foot range as Bluetooth or UWB, it could theoretically transfer an HD movie to a…

360° Video

My friend Camilo Telles did his master thesis on this exact subject, he projected this camera entirely in wood and cheap web cameras, he also wrote a software to integrate all the images in one single, it’s not his work, but it’s similar and very interesting. Reference: http://adn.blam.be/papervision/

How to use your iPhone on Linux

You will need windows or Mac for the first moment and then you’ll be free. I have a VMware image in my computer and I could never make it work with USB, this time I had a chance to look after this issue and found out why. Linux’s VMWare doesn’t work with USB 2.0, to workaround this you can either change it to 1.1 through software (Kernel or BIOS) or you can use a USB 1.1 Hub, another option is using a temporary machine with windows, I have one at work and that’s what I did. You need to install…

What smartphone to buy

I try not to spend my money on things that doesn’t work for me, I had a Palm V years ago, it was perfect for a few months, then suddenly it became too heavy and too complicated to carry. I realized that the only similar thing I would like to have is a smartphone. Yesterday I was thinking if I should buy a Nokia N95 or an iPhone, I made my mind, my perfect phone doesn’t exist yet and I will stick with my simple phone for a while more. Mark Pilgim has a strong opinion on the iPhone case.

Hotspot Simulator

One of the systems I work on is VexBox, a multi-architecture Linux distribution for hotspots, it comes with all the softwares needed to serve a user, dhcp server, legitimate ARP Spoof, web server, radius client, etc. For simple testing purposes it’s ok to open up a notebook, find the SSID, connect and do all your tests. But some times you need more then this, you need more users, more time connected and you might not have all the resources you need. That’s when I came up with the idea of creating a hotspot simulator. For each client we use an…

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