• Measures 2.0" x 0.9" x 0.3" (51mm x 23mm x 8mm) without headers soldered in

• Light as a (large?) feather - 5.8 grams

• ATSAMD21G18 @ 48MHz with 3.3V logic/power

• No EEPROM

• 3.3V regulator with 500mA peak current output

• USB native support, comes with USB bootloader and serial port debugging

• You also get tons of pins - 20 GPIO pins

• Hardware Serial, hardware I2C, hardware SPI support

• 8 x PWM pins

• 10 x analog inputs

• 1 x analog output

• Built in 100mA lipoly charger with charging status indicator LED

• Pin #13 red LED for general purpose blinking

• Power/enable pin

• 4 mounting holes

• Reset button

• SX127x LoRa® based module with SPI interface

• Packet radio with ready-to-go Arduino libraries

• Uses the license-free ISM bands (ITU "Europe" @ 433MHz and ITU "Americas" @ 900MHz)

• +5 to +20 dBm up to 100 mW Power Output Capability (power output selectable in software)

• ~300uA during full sleep, ~120mA peak during +20dBm transmit, ~40mA during active radio listening.

• Simple wire antenna or spot for uFL connector

• 4 full H-Bridges: the TB6612 chipset provides 1.2A per bridge with thermal shutdown protection, internal kickback protection diodes. Can run motors on 4.5VDC to 13.5VDC.

• Up to 4 bi-directional DC motors with individual 12-bit speed selection (so, about 0.02% resolution)

• Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil, interleaved or micro-stepping.

• Motors automatically disabled on power-up

• Big 3.5mm terminal block connectors to easily hook up wires (18-26AWG) and power

• Polarity protected 2-pin terminal block and jumper to connect external power, for separate logic/motor supplies

• Completely stackable design: 5 address-select jumper pads means up to 32 stackable wings: that's 64 steppers or 128 DC motors! What on earth could you do with that many steppers? I have no idea but if you come up with something send us a photo because that would be a pretty glorious project.

• Download the easy-to-use Arduino software library, check out the examples and you're ready to go!

Follow Directions Carefully

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• 200 steps per revolution, 1.8 degrees

• Coil #1: Red & Yellow wire pair. Coil #2 Green & Brown/Gray wire pair.

• Bipolar stepper, requires 2 full H-bridges!

• 4-wire, 8 inch leads

• 42mm/1.65" square body

• 31mm/1.22" square mounting holes, 3mm metric screws (M3)

• 5mm diameter drive shaft, 24mm long, with a machined flat

• 12V rated voltage (you can drive it at a lower voltage, but the torque will drop) at 350mA max current

• 28 oz*in, 20 N*cm, 2 Kg*cm holding torque per phase

• 35 ohms per winding