Adafruit has today announced the availability of the new 15×7 CharliePlex LED Matrix FeatherWing which is a perfect addition to any Feather projects you might be developing that we do require a light source or some sort of visual display.
The 15×7 LED display can beCombined with any Feather development boards to create a bright grid of 105 charlieplexed LEDs. The CharliePlex LED Matrix even comes supplied with a built-in charlieplex driver that is run over I2C.
Adafruit explains more about the new hardware which is now available to purchase directly from their online store priced at $12.95 :
What is particularly nice about this Wing is the I2C LED driver chip has the ability to PWM each individual LED in a 15×7 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 Feather and can share those pins with other I2C devices and sensors.
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