There are a number of websites out there that take advantage of the lens of a low-end laser pointer, using it as a macro lens for phone cameras and such. None that I found, however, mentioned that the lens is just the right size to fit inside a Lego...
The Raspberry Pi (model B) has only 2 USB ports, which makes connecting a mouse, keyboard and WiFi dongle challenging. In the end, many folks go for the powered USB hub solution, but I find that there are times I want to slim down the wires and components that I'm carrying, and I'm always carrying my iPod touch, so why not take advantage of that?
Sending output from Mathematica to the Adafruit RGB LCD display on a Raspberry Pi
I had a birthday and bought the Adafruit RGB LCD kit for the Raspberry Pi. Then I wrote some Wolfram code to send out put to the display. Then I wrote a tutorial about it. Finally, someone read that tutorial.
In part 2 of this series, I demonstrated the basic use of custom defined characters. Now I want to exploit the custom characters to make a fully customized display. It isn't going to be easy because we've got 8 custom characters and 32 character spaces to fill. In the end, we see the limitations of this setup (or more precisely, the limitations of me writing the code for this setup), but hopefully end up with some useful tools.
In part 1 of this series I showed how one can create some basic functions to direct text output from Mathematica to an LCD display attached to a Raspberry Pi. In this part of the series I will focus on building custom characters. Before that, however, I'd like to take a brief look at how the functions in lcdlink behave when incorporated into Mathematica's dynamic features.
Coding myself out of a job
Recently, a speech recognition software package, Jasper, was released for the Raspberry Pi, so I had to try it out. After a number of bumps and hiccups I was able to get it up and running on (one of) my Raspberry Pis. Naturally (?!?), the next step was to use Mathematica in order to teach Jasper to speak Chemistry to me, and now my Raspberry Pi is lecturing about the physical properties of elements on the periodic table.