• Atmel SAMD21 processor (same as is used on the Arduino Zero)
• More memory compared to TinyDuino (both Flash and RAM)
• Power switch, regulator, lithium battery management on board
• Precision clock crystal and Real-Time Clock hardware built-in, low power standby
• 4 individually addressable I2C Wireling Ports 

• Atmel ATSAMD21G18A 32 bit ARM processor at 48MHz, Arduino Zero compatible
• 32.728KHz clock crystal, RTC hardware built-in with standby mode down to 0.2mA
• Ultra-compact size and weight (smaller than a US Quarter!)
  • 15mm x 32mm (.59 inches x 1.26 inches)
  • Max Height: 4.6mm (0.18 inches)
  • Ultra-thin 0.61mm (0.024 inches) PCB
  • Weight: 1.40 grams (0.049 ounces)
• Atmel 32-bit ATSAMD21G18A ARM Microcontroller
  • ARM Cortex M0
  • 256KB Flash, 32KB SRAM
  • 12-bit ADC, 10-bit DAC
  • Default Clock speed: 48MHz
• 2.7V – 5.5V operating voltage with built-in 3.3V regulator
• Arduino compatible bootloader with CDC Serial port, plug and play on OSX and Windows 10
• 4 individually addressable I2C Wireling Ports  

Note :

• This processor board is designed for low-cost Wireling projects, so this board does not include the TinyShield expansion connector.
• To send text to the Arduino IDE Serial Monitor, use the SerialUSB object instead of Serial
• If you were able to upload a sketch to the WirelingZero and now it does not respond, you may need to force this into bootloader mode. To do this, power off the WirelingZero using the slide switch. Plug the USB cable into the WirelingZero and your computer. Then press and hold the button on the bottom on the WirelingZero while sliding the switch to the ON position. Select the new available COM# Port under the Tools tab, then try uploading your program to the WirelingZero and it should work. You may need to try this several times if it does not work the first time.
• All batteries are sold separately

Documents :

• SAMD21 Datasheet
• PCA9544 Datasheet
• Schematic
• Eagle Files
• Wireling Library

Package Includes :

• 1 x WirelingZero