Category: Engineering

bookmark_borderBarTop Mame Cabinet (under dev)

Posted on by dansku

Who hasn’t spend a lot of money and time on arcades during childhood? What about build one and play all those games again?

Mame Cabinet

Browsing the web I found that a lot of people are building their own machines, building over a pc running a MAME emulator with a cool front-end. If you google images for ‘arcade cabinet‘ you will be amazed by what people are doing!!

I decided then to build my own, trying to use as much used stuff as possible, like a old computer, old screen and two usb game controllers that were broken but with the electronics hardware in perfect conditions. The cabinet will stay on the hackerspace from my town, TARRAFA HACKERSPACE, so we can set some championships, it will be fun for sure!!!

On this post, I will be giving updates on the progress (not much will be done during university semester, I hope to finish this project on holidays).

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bookmark_borderATmega8A Development Kit Review

Posted on by dansku

Few days ago I received a ATmega8A Development Kit from ProtoStack.

The board is well made, and it has everything you need to start developing any kind of project using the famous Atmega8, which is the same µC used by the first Arduino. Actually, you can also use this board with different µC’s such as Atmega168 and Atmega328 (used in Arduino UNO).

The kit have a lot of space to add more components, and a good thing is that the VCC and GND voltage is easily accessed everywhere of the board. On the pictures and the video I posted here, I have connected the output pin PB2 to an resistor, green LED and to the ground, even without soldering the board works great.

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bookmark_borderDistance of two Geo-Points in PHP & Python

Posted on by dansku

I needed to calculate the distance between two Geo-Points using PHP.

Using Haversine formula you get to this function, where you enter lat1, long1, lat2, long2 and it will give the distance in Km.

In case you want to show the distance in Miles, simply change the Earth radius to 3956.

PHP:

Python

Hope it helps someone!

bookmark_borderOpen Hardware MoodLamp

Posted on by dansku

Finally it’s here, my first Open Hardware project, in which I have delayed some years to release due my lack of time to finish it and make it presentable.

For this project I’ve created a Project Page, in which I will be updating in a regular basis.

So I want to invite you to take a look at the
OPEN HARDWARE MOODLAMP PROJECT PAGE.

bookmark_borderOpen Source Hardware Association

Posted on by dansku

Just want to share this cool Association that is being created:

The Open Source Hardware Association is Coming Soon! It will be a non-profit organization (status pending) working to spread the love of open source hardware. We’re working out details, and as soon as we know, you’ll know! Check back at oshwa.org for upcoming news.

They are asking people to fill a survey so they can know which path follow to make the association. You can help them by filling it here: http://www.surveymonkey.com/s/OSHW

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