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Raspberry Pi LED matrix bonnets arrive at Adafruit

9:01 am February 27, 2019 By Julian Horsey

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CharliePlex LED Matrix Bonnets

Developers, makers and electronic enthusiasts really interested to know that Adafruit is now selling the CharliePlex LED matrix bonnet offering and arrangement of 8×16 Blue LEDs priced at $12.95. The 16×8 LED display can be placed atop any Raspberry Pi computer with a 2×20 connector, for a beautiful, bright grid of 128 charlieplexed LEDs, and comes with a built-in charlieplex driver that is run over I2C. Watch the video below to learn more about the latest arrivals to the Adafruit online store.

“What is particularly nice about this Wing is the I2C LED driver chip has the ability to PWM each individual LED in a 16×8 grid so you can have beautiful LED lighting effects, without a lot of pin twiddling. Simply tell the chip which LED on the grid you want lit, and what brightness and it’s all taken care of for you. You get 8-bit (256 level) dimming for each individual LED.

The IS31FL3731 is a nice little chip – and it runs happily over 3.3V power. Inside is enough RAM for 8 separate frames of display memory so you can set up multiple frames of an animation and flip them to be displayed with a single command. Since it uses I2C, it takes up only the SDA/SCL pins on your Pi and can share those pins with other I2C devices and sensors.”

If you enjoy building Pi projects you might be interested in our comprehensive list of Raspberry Pi displays, HATS and small screens.

Source: Adafruit

Filed Under: DIY Projects, Hardware, Top News

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