Author Archives: Lucas Allen

TI-Innovator Hub Demo

I recently added a review of the TI-Innovator. I had a couple of simple demos in there, and I promised I’d show how I did them later. Here’s the first of two blog posts explaining one of those demos. This one is really simple, just playing a few notes from the original Super Mario Bros theme song using the TI-Innovator hub itself.

If you are interested in doing your own experiment similar to this, it’s quite simple. For each note that you want to play, you’ll need to send a command to the hub with the tone and the note duration to play. A couple of notes about this. The documentation (and experimentation) seems to indicate that the tone is in hertz and duration is in seconds. However, I found that the hub is a bit out of tune, as compared to several tuning videos on YouTube (i.e. 440 Hz on the TI-Innovator hub is a bit flat). So if you’re trying to go from sheet music to the hub using a conversion chart, you may end up a little out of tune; you can see in the video that I did. Also, I found that when playing consecutive notes, the Innovator didn’t seem to respect the duration argument. Workaround? Play every sound for the same length of time and add a “Wait” argument in between to make the notes feel like they are the appropriate length.

Here’s the code I used to create this simple program:


Define testsnd()=
Prgm
Send "SET SOUND 666 TIME .1"
Wait 0.15
Send "SET SOUND 660 TIME .1"
Wait 0.3
Send "SET SOUND 660 TIME .1"
Wait 0.3
Send "SET SOUND 510 TIME .1"
Wait 0.1
Send "SET SOUND 660 TIME .1"
Wait 0.3
Send "SET SOUND 770 TIME .1"
Wait 0.55
Send "SET SOUND 380 TIME .1"
Wait 0.575
Send "SET SOUND 510 TIME .1"
Wait 0.45
Send "SET SOUND 380 TIME .1"
Wait 0.4
Send "SET SOUND 320 TIME .1"
Wait 0.5
Send "SET SOUND 440 TIME .1"
Wait 0.3
Send "SET SOUND 480 TIME .1"
Wait 0.33
Send "SET SOUND 450 TIME .1"
Wait 0.15
Send "SET SOUND 430 TIME .1"
Wait 0.3
Send "SET SOUND 380 TIME .1"
EndPrgm

 

TI-Innovator Review

TI-Innovator Review

  A few months back, Texas Instruments announced a new STEM education product they had developed that would encourage kids to develop coding skills right on their graphing calculators, the TI-Innovator. The Innovator would work with either the TI-Nspire CX family or the TI-84 Plus CE, the latest generation of Texas Instruments graphing calculators. I… Continue Reading

How to Draw Mario on the TI-Nspire

A few months back I had some time on my hands and did a post on how to graph Mickey Mouse with the TI-Nspire. Today I found myself in the same situation and decided to try my hand with the classic Nintendo character Mario on the Nspire. I imposed the same rules on myself as… Continue Reading

Texas Instruments Announces TI-Innovator

Texas Instruments Announces TI-Innovator

UPDATE: I have posted a hands on TI-Innovator review. Continuing to build their brand as a way to teach and learn STEM skills in the classroom, Texas Instruments has announced exciting new hardware, the TI-Innovator Hub. The TI-Innovator was created using the TI LaunchPad™ Board technology and is designed as a classroom tool that introduces students… Continue Reading

Thoughts on Illinois’s Move From PARCC to SAT

Thoughts on Illinois’s Move From PARCC to SAT

If you missed the news the other day, my home state of Illinois is partially opting out of their 5-year contract with the Partnership for Assessment of Readiness for College and Careers (PARCC) test. While elementary grades will continue to give the test, high school students are done with it, and instead will receive the… Continue Reading

Filed Under: SAT