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RFM69 @ 900 MHz - basic packetized FSK/GFSK/MSK/GMSK/OOK radio at 868 or 915 MHz for use in Americas ITU 2 license-free ISM
We also toss in a 220uF capacitor
A third-hand tool is really useful as well
the controller chip is inside the LED
Adafruit ItsyBitsy M4 Express featuring ATSAMD51 magnetic RFM69 @ 900 MHz -The Adafruit ItsyBitsy M4 Express features the Microchip ATSAMD51! Small, powerful, with a ultra fast ATSAMD51 Cortex M4 processor running at 120 MHz this microcontroller board is perfect when you want something very compact, with a ton of horsepower and a bunch of pins. This Itsy is superfast, with it's 120MHz Cortex M4 with floating point support and 512KB Flash and 192KB RAM. Your code will zig and zag and zoom, and with a bunch of extra
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