Adafruit (PID 3179) Feather M0 RFM95 LoRa Radio - 433MHz
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<b>[Product Information]</b><br>
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<li>Measures 2.0" x 0.9" x 0.28" (51mm x 23mm x 8mm) without headers soldered in</li>
<li>Light as a (large?) feather - 5.8 grams.</li>
<li>ATSAMD21G18 @ 48MHz with 3.3V logic/power 256KB of FLASH + 32KB of RAM No EEPROM. You also get tons of pins - 20 GPIO pins Hardware Serial, hardware I2C, hardware SPI support PWM outputs on all pins 6 x 12-bit analog inputs 1 x 10-bit analog ouput (DAC)</li>
<li>3.3V regulator with 500mA peak current output. Built in 100mA lipoly charger with charging status indicator LED</li>
<li>USB native support, comes with USB bootloader and serial port debugging</li>
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