I edited the touchscreen Neko program to include Marisa sprites based on her sprites from “Patchcon: Defend the Library!”, except in monochrome. She can also be controlled by serial port if connected through USB: send a header byte of 255 to the Arduino, followed by the X and Y coordinates, and she will move there (assuming the previous command was a valid one). This allows her to also be controlled by, say, Ustream/IRC chat commands.

Source code and bitmaps can be found here.

Update: Had an interactive stream on Ustream where viewers could type “!mari” followed by two integers, and she would move to the coordinate (unless it’s too large or small, then she moves to wherever she can). Here‘s a recording of the stream; cooler stuff happens at about 13 mins onward (fire and snow effects). It doesn’t record the chat messages though, but they were definitely there.

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Made an Arduino program based on the computer program Neko. Neko moves to where you tap on the screen, and if you don’t do anything for awhile, it does some idle animations. I’ve also added a thing that wasn’t in the original program; after Neko performs two idle animations, it moves to a random location on the screen (not shown in the video).

Source code can be found here.

Update: Figured out how to make Neko controllable by having users type in coordinates on UStream.

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I took one of those Sony Ericsson touchscreens I got from DealExtreme, along with a SparkFun Nintendo DS touchscreen breakout board (it works with this touchscreen too), and put it on my KS0108 MONOCHRON GLCD screen after a lot of messing around with wires. The touchscreen is actually a really good size for this screen, it’s just slightly larger but it’s a very good fit. I knew it was a good idea to buy two of them though, because I ended up breaking one of them (the wires are very fragile and it got torn off), which is why I decided to use twenty layers of tape to protect the wires on the second one. The only downside to using this touchscreen with the GLCD is that now I only have one analog input pin left.

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IRC on a GLCD!

I found this thing about making an IRC bot in Python, and thought: since I know how to send serial information from Python using pySerial and how to receive serial information on the Arduino as well as knowing how to output text on a GLCD, why not make an Arduino program that shows IRC text on a GLCD?

Basically, the IRC bot connects to a server and channel you choose, and it just stays in there, sending serial information to the Arduino. Using the GLCD library 3 beta, the Arduino simply prints each character received to a text area and checks for newlines.

The IRC bot isn’t that great (probably still needs a lot of work) but it gets the job done.

Source code available here and in the full post. Note that the Python script requires pySerial and Python 3.1.

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The source code for Running Marisa can be found here.

Included with the Arduino GLCD library is a Processing program by Michael Margolis that converts an image into a header file that you can include in your Arduino sketch to display bitmaps using GLCD.DrawBitmap(). It’s pretty convenient, but what if I wanted to include lots of bitmaps, to be used as frames of an animation? I’d have to generate the header files one by one and include all of them, then define some arrays to point to the different frames.

I decided to modify the program to accept a folder as an input, and the output would be a single file containing the headers for all of the files in the array. In addition, at the very end of the file, a pointer array is declared, with each entry in the array pointing to the address of each image. The length of the array is also stored as a variable.

Bitmap header file

The lines appended to the end of the file.

You can download the Processing file and java applet here.

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