Hey, I got so exited about the DotKlok that I decided to build my own! As it’s quite difficult to buy one from here (I live in Florianópolis – Brazil), and to pay U$150 for the Kit wouldn’t work for me… So I want to build a good looking clock for my room, which I only have my computer and mobile as clock.
First of all, I needed to buy the 24×16 Led Display from Sure Electronics, which I found for a good price at eBay (little cheaper then buying from the Website).
This is amazing, perfect for those times when your have to create another board just to hold the atmega µC. I am looking forward to use this tiny board in some project in a near future. Congrats to Varesano for the project.
DOTKLOK is an open-source, hackable, Arduino-based digital clock that displays a series of unique time-telling animations. The passing of time is depicted with numbers and abstract/geometric patterns such as Morse code and minimal analog clock faces, and includes animations inspired by classic video games such as Pong, Tetris, Pacman, and Space Invaders.
You can buy the kit for U$150.00 and it assembled for U$200.00
for me… I think I will build one, hell yeah I’m going to build one, just love it!!!
You can check more information from dotklok’s website.
It’s finally here, a document that will help us to define what Open Hardware is, and to spread the idea. Open Software have been around for a long time, Open Hardware is still beginning, but already have a really big community out there, including me. I will add the logo to my next projects for sure!
The objective of this text is to help you to understand how Resistors work and use it in it’s most simple use, as a current limiter. If you want to know more about resistors and leds, check Here and Here.
During the First Meeting of Electronic Arts in Florianópolis, we built a Breathalyzer using the Alcohol Gas Sensor MQ-3 and a Arduino Board to use in the last day of the meeting, in which we gave a party. You can see a quick video two posts below. Last days I received many emails asking for the code or how to make one, so I decided to build the sensor again, take pictures/videos and make a tutorial showing how you can make one, so here it is.
It happened last week, starting on Monday 11th January and finishing on Friday the 15th, the I Meeting of Electronic Arts, where people from many differet places of Brazil came to see what was going on. Our first idea was a meeting (de)constructive, build, hack, modify, learn, teach, freedom of knowledge. Several workshops were presented, Basic Electronics, Processing, PureData, and others (the videos of the presentations will be distributed when people finish editing).
On Tuesday night we made a walking trip crossing the dunes till we find Joaquina’s beach. After swiming in the cold waters, we walked back on a thick rain, amazing, it was long ago since the last time I walked on the rain wanting it!
We learned/teched a lot in this event, one thing that we’ve noticed is that creative minds work much better after midnight. There was no point planning anything for the morning because no one could wake up before 11h.
On Thursday night a party was organized, where we put in for a test some projects developed during the event, for example a Breathalyzer using a Alcohol Gas Sensor MQ-3 sensor, LEDs and an Arduino. By the way, never seen so many arduinos in one place, in different sizes and colors, beautiful!
Here is also a Video from the Breathalyzer (I will make a post on how you can make one after the Campus Party next week)
I recently got a Maxbotix LV-EZ4 Ultrasonic Range Finder to try understand how to use it with my little Arduino. Having a ultrasonic range finder can be very useful in many different projects, as it can detect objects, I can use it to make alarm systems (cars usually use this kind of sensor), Obstacle-Avoiding Robot and many other things that you may have in mind. It works better outdoors then the IR sensor, but the only thing I could notice is that it doen’t detects very well some thick carpets. Besides that, it’s a great sensor. From the datasheet we can read that it sonar range information from 6-inches out to 254-inches (15.24 cm – 6.452m).
In case you think a arduino board is too much for your ATmega Development, you should check this board made by yourITronics. Using the microcontroller`s internal clock, and programming using an ICSP cable you can start developing right now!
In the website you’ll find the scheme and the eagle file.