30 Aug '16, 7pm

Program this @Adafruit-powered LED matrix handbag for any occasion:

Peel the backing off of each strip, and press it onto the vinyl. It is helpful to peel and press as you work your way down the strip. Once the strips are secured, cut wire into short lengths to connect each strip to its neighbors. I used 26 AWG silicone wire for its flexibility. Solder the pads on the end of each strip and tin the ends of each wire before soldering the wires to the pads. I found that if I wasn’t careful, the strands on the wires would sometimes spread out and short with a neighboring contact. After soldering each strip to the next one, I would test the connections by connecting the matrix to an Arduino Uno and running the Adafruit Strandtest Arduino sketch to make sure all of the connected LEDs would light up correctly. Once all of the connections were made and tested, I used a hot glue gun to melt hot glue over the solder joints. This provides strain reli...

Full article: http://www.geekmomprojects.com/led-matrix-handbag-2-0-how...

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