Intro: Scrolling Display Driver for Linkit One
I had a few scrolling Led displays from a project at work. I took one home to work on some ideas for what to show on it. The only problem was it was a serial display and I didn't like being tethered to it.
I used a Linkit one to make it bluetooth. So far the best use is to show game scores in Unreal Tournament 2004. Probably not a good use for work though.
I'd like to use the Linkit's SMS capability to override the current message with any SMS message received. My thought is that I would enroll the SMS number in my schools Campus alert system. That way if there's a problem I'll know about it.
That would be a great off campus alert screen. I'd love to see those weather closing messages before I get out of bed.
If I do the same with the Wifi connectivity I may be able to use it on campus too.
Step 1: Legacy Serial Interface
I made a simple serial interface board for the Linkit One. I used a Max232CPE chip and 5 small 1uF capacitors just like the standard test setup in the data sheet.
The code is pretty simple. I have to figure out if the Linkit can do UDP calls then I wont need my computer at all. Right now my Macbook runs UT Query and sends the data up to the screen.
The SMS should be easy but My Sim isn't registered yet. I just got it and have to see if its recognized by the Linkit.
Step 2: Couldn't Have Been Easier
I initially tried setting it up with a Lantronix serial port server. It worked but telnet programming was a little harder to deal with than I wanted. The bluetooth SPP port made it look just like it was plugged in the laptop. All the programs ran without modification.
Step 3: Some Video's of the Displays in My Basement and My Office
I have one in my office to. I can switch it depending on my mood. I have rss feeds from Ted talks, CNN, Educause, and even my sons blog....
I found a program on the web called UT Query. It does the UDP query of a UT2004 server and returns the team scores. That's still my favorite use.