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#valentinesday – From the Forums: Bicolor square heart/valentines necklace #leds #arduinomicro #sugru

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Dr_Speed shared some photos of LED heart projects on the Adafruit Forums!

Bicolor square heart/valentines necklace

heart_bmp[] =
{ B01101100,
B11111110,
B11111110,
B11111110,
B11111110,
B01111100,
B00111000,
B00010000},

I use a micro, but just about anything will do. There’s some Sugru on there to keep the sharp bits from catching on clothing/pockets. Usb battery powers the whole thing. It’s pretty bright, definitely not subtle.

Read more.

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Adafruit Bicolor LED Square Pixel Matrix with I2C Backpack: What’s better than a single LED? Lots of LEDs! A fun way to make a small colorful display is to use a 1.2″ Bi-color 8×8 LED Matrix . Matrices like these are ‘multiplexed’ – so to control all the 128 LEDs you need 24 pins. That’s a lot of pins, and there are driver chips like the MAX7219 that can help control a matrix for you but there’s a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn’t it be awesome if you could control a matrix without tons of wiring? That’s where these adorable LED matrix backpacks come in. We have them in three flavors – a mini 8×8, 1.2″ Bi-color 8×8 and a 4-digit 0.56″ 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial. It’s called a Bicolor LED, but you can have 3 colors total by turning on the red and green LEDs, which creates yellow. That’s 3 colors for the price of 2! (read more)


3d_printing_vCardHappy Valentine’s Day from Adafruit! Today we are highlighting our favorite heart-shaped electronics projects. We have lots of excellent projects to let your loved one know that you care. Be sure to check out our gift guide as well!


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