SCIFI User Interface Designer Lukasz Wieczorek
Posted on December 21, 2012 by lukasz on arduino, Hardware

Attiny85 + arduino serial monitor

arduino2

so I’m working on this cloud project with a co-worker and trying to get a capacitive switch to work with it. If you have ever worked with capacitive switches you know how tedious this can be. Now imagine you have no way to monitor output, well that is what I was running into. Problem is you can never know what the output is with stock settings of an attiny. So my solution comes from the good boys/gals of MIT.

Lets set up a little basic “hello world” type example.

Posted on September 2, 2012 by lukasz on arduino, Interaction Design, Processing

install Twitter4j with processing 2.0

wow… well that was a workout.

seems that you have to have very specific way of organizing an imported library. Here are some steps I took to get it into the newly released processing 2.0:

  1. make sure you rename twitter4j-core-2.2.6.jar to: twitter4j226.jar
  2. make sure you rename the lib folder to: library
  3. rename twitter4j-2.2.6 to twitter4j226

Here is a screen grab of my structure

then you just go to: sketch > import library. it should be in there, it will add the following lines of code:

Posted on March 25, 2012 by lukasz on arduino

Connecting to a Arduino Duemilanove for Hello World LED example in OSX Lion

So I started diving into the land of Arduino and went with the Arduino Duemilanove. It doesn’t have sexy branding like the Uno, but seems to be exactly the same. I cannot tell the difference, so I did a little digging and found this:

The main difference is the substitution of the Atmel ATmega8u2 in place of the older FTDI chip. The ‘8u2 has been programmed to act like a USB-serial converter. The second difference is the new bootloader which takes up only 512b compared to the original 2k, and is faster. Other than that they aren’t notable differences.

source

Ok so that told me all of nothing, might as well have tried to explain some quantum physics to me. Only thing I can guess is that I don’t need drivers for Uno and do need to install drivers for Duemilanove(more on this later). so I looked some more and found a less esoteric explanation of the perks of the Uno:

Better:

  • 150mA 3.3v Voltage Regulator
  • Smaller, faster Bootloader
  • More flexible USB Chip
  • A 4th mounting hole

Worse:

  • Replaced crystal with lower accuracy ceramic oscillator

source