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they use a Pro Trinket 3V or 5V
The Explorer HAT and Explorer HAT Pro are the perfect prototyping side-kicks for your Raspberry Pi
5V powered outputs - The onboard darlington array can supply up to 500mA per channel (but you'll be limited to driving around 1A total from the board)
The HAT uses the high speed SPI interface on the Pi and can use the mini display as a console
Because we control everything about the product
16x8 1.2" LED Matrix+Backpack UltraBright Round YellowGreen LEDs motor they use a Pro TrinketWhat's better than a single LED? Lots of LEDs! And what's better than lots of LEDs? TWO TIMES AS MANY LEDS!!! With the 16x8 LED Matrix Backpack we've doubled your project's matrix capacity by making it super easy to get two separate 8x8 matrices onto one handy board! Matrices like these are 'multiplexed' so to control 64 LEDs you need 16 pins and to control 128 LEDs, you'd need 24 pins. That's a lot of pins, and there are driver chips like the MAX7219
US$ 35.74
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