Bach Cantata Number 147
/* * Bach Cantata Number 147 * * Uses a LilyPad speaker (buzzer) to play Bach Cantata No. 147, * a.k.a. Jesu, Joy of Man's Desiring. * * Programmed by Cindy Brooman * Christmas 2009 * How this works: connect the speaker's - to pin 4 and its + to pin 5. The cantata is * called from the setup, and the loop does nothing but repeat a delay. This has * the effect of making the music play once and then stop. (Believe me, it quickly * becomes tiresome hearing it in a loop!) To play it again,…See More
Comment Wall (2 comments)
You need to be a member of Fashioning Technology to add comments!
Join Fashioning Technology
The LED matrix is indeed controlled by a display driver (MAX6953 from Maxim). There are actually four traces running to the display: two up the left side of the shirt (for the 2-wire control interface with the driver) and two up the right (power and ground). I sort of cheated and used a PCB for the display, so the 6953 is soldered directly on, but if you're sewing in all of your LEDs, I would recommend using the DIP version of the driver and attaching it by removing the pins on a 40-pin socket and sewing it on (as described by Leah Buechley: http://web.media.mit.edu/~leah/grad_work/diy/diy_tank.html -- Construction step #5). There are a few capacitors and resistors in the driver circuit, as well, which are detailed in the data sheet: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3291.
Hope that helps. If you have any other questions, just let me know. I look forward to seeing the quilt!