16x8 1.2" LED Matrix + Backpack - Ultra Bright Square Amber LEDs Shipping:1 day The new RF data rates

The new RF data rates up to 250Kbps and 200 ft indoor ranges and up to 4000 ft line-of-sight outdoor range

a 915MHz radio + antenna

although this is easily changed to another of eight locations - see Changing the RLY08 Address

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16x8 1.2" LED Matrix + Backpack - Ultra Bright Square Amber LEDs Shipping:1 day The new RF data ratesWhat'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