Zigduino

Caution

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Tip

When using this board with RIOT, set the BOARD variable to zigduino in your Makefile. If you follow the standard RIOT project structure, your Makefile should look like this:

./Makefile

# name of your application
APPLICATION = hello-world

# Change this to your board if you want to build for a different board
BOARD ?= zigduino

# This has to be the absolute path to the RIOT base directory:
RIOTBASE ?= $(CURDIR)/RIOT

include $(RIOTBASE)/Makefile.include

Support for the Zigduino board

Hardware

Pinout

Pinout

Warning: Unlike on other ATmega MCUs, the GPIOs are not 5V tolerant.

Note: The 5V pin cannot be used to power the board, as the board is not equipped with an voltage regulator. The pin is therefore not connected. But it can be used to pass 5V to shields, if connected to a 5V supply voltage.

Board

The Zigduino board is an Arduino-compatible microcontroller platform that integrates a SOC with a 8-Bit AVR MCU and a IEEE 802.15.4 radio chip (ATmega128RFA1).

MCU Details

MCU	ATmega128RFA1
Family	ATmega
Vendor	Atmel
Package	QFN/MLF
SRAM	16KiB
Flash	128KiB
EEPROM	4KiB
Core Frequency	8MHz (16MHz no power save mode)
Oscillators	32.768 kHz & 16 MHz
Timer	6 ( 2x8bit & 4x16bit )
Analog Comparator	1
ADCs	1x 15 channel 6 to 12-bit
USARTs	2
SPIs	3 (1 SPI & 2 USART SPI)
I2Cs	1 (called TWI)
Vcc	1.8V - 3.6V
Datasheet / Reference Manual	Datasheet and Reference Manual
Board Manual	Product Page

The MCU comes with a 2.4 GHz IEEE 802.15.4 radio that is compatible with the Atmel AT86RF23x line of transceivers with the only difference being that it is not being accessed over an SPI bus, but instead the radio registers are directly mapped into memory.

Flashing RIOT

Flashing RIOT on the Zigduino is done using the on-board USB-TTL adapter. The ATmega bootloader is present on the MCU. Simply use

make flash BOARD=zigduino

Use on IoT Lab

Most of the Zigduino nodes are deployed in the Strasbourg site with sensors. Some of these nodes are also combined with a LoRa modem in order to offer a dual radio stack IEEE 802.15.4/LoRaWAN.

There are two available configurations:

Zigduino (atmega128rfa1)

A basic Zigduino nodes with embedded sensors:

• Grove Temperature Humidity sensor (pin 14, A0)
• Grove Light sensor (pin 15, A1)
• Grove Loudness sensor (pin 16, A2)
• Grove PIR Motion sensor (pin 4, D4)

Zigduino (atmega128rfa1_rn2483)

This is an extension of the previous Zigduino (atmega128rfa1)

• Secondary serial port (LoRa modem): 57600 bauds
• RN2483 modem with 1.0.3 firmware (LoRaWAN Class A only)
  • TX (pin 1, TXD1)
  • RX (pin 0, RXD1)