A small bag my mother and I have made for a 4 year old girl (called Theresa) with sewable electronics. It has 4 neopixels (some kind of RGB leds) controlled by an Adafruit Gemma. It is powered by a lithium battery. If the button at the top is pressed shortly, the leds start blinking in random colors for 100 s and then turn off again. If the button is pressed longer, the leds turn on till the button is pressed again in colors corresponding to the crocheted flowers
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