16x8 1.2" LED Matrix + Backpack - Ultra Bright Square Green LEDs Shipping:2-4 Weeks The A-Star 32U4 Mini can

The A-Star 32U4 Mini can either be powered directly from the USB 5 V supply or from an external voltage source

The back of the panel has separate aluminum wires

Built in USB means you plug it in to program it

The interface of this sensor uses DFRobot Gravity Interface

A-Star 32U4 Mini SV : 5 V to 40 V

16x8 1.2" LED Matrix + Backpack - Ultra Bright Square Green LEDs Shipping:2-4 Weeks The A-Star 32U4 Mini canWhat'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