Arduino Due without Headers brands_Arckit there is the option of

there is the option of getting the antenna directly from our store at the following link: Dipole Pentaband Waterproof Antenna

Please note that currently the MKR2UNO adapter is compatible only with MKR1000 without headers

7V battery charger

so you can easily adapt your custom made shields to the GIGA R1 WiFi (remember this board works at 3

TWI: SDA and SCL pins that are near to the AREF pin

Arduino Due without Headers brands_Arckit there is the option ofThe Arduino Due is a microcontroller board based on the Atmel SAM3X8E ARM Cortex M3 CPU. It is the first Arduino board based on a 32 bit ARM core microcontroller. It has 54 digital input output pins (of which 12 can be used as PWM outputs), 12 analog inputs, 4 UARTs (hardware serial ports), a 84 MHz clock, an USB OTG capable connection, 2 DAC (digital to analog), 2 TWI, a power jack, an SPI header, a JTAG header, a reset button and an erase button.