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You won#39;t be able to look away from the mesmerizing patterns created by thisAdafruit CharliePlex LED Matrix Display Bonnet. This 16x8 LED display can be placed atop any Raspberry Pi computer with a 2x20 connector, for a beautiful, bright grid of 128 charlieplexed LEDs. It even comes with a built-in charlieplex driver that is run over I2C.
We carry these Bonnets ina few vivid colors-this is the yellow LED matrix.
What is particularly nice about this Wing is the I2C LED driver chip has the ability to PWM each individual LED in a 16x8 gridso 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#39;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.
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