Arietta technical documentation Buy

Getting started with Arietta G25

What do you need

  1. A microSD card with Linux installed
    Create by yourself the microSD using a Linux Buildroot ready-to-use image
  2. An USB to microUSB data cable
  3. A Linux or Windows PC or a Mac. This tutorial has been tested width:
    • Ubuntu Linux 22.04.3 LTS
    • Windows 10
    • MacOS Monterey 12.6.9
  4. An Internet connection to update or download software.
  5. A debug port interface interface:

Step-by-step procedure

Insert the bootable class='acmetable' Linux microSD card

Insert the micro usb cable to Arietta and to a PC host port. This action will turn on and boot up the board.

The led on-board will blink after a while to indicate that the Linux Kernel is running.

PC network configuraton

When you plug the Arietta board to your PC USB port it just detects Arietta as a new lan adapter but some manual setup are
required to have access to the Linux command prompt, web server etc. and to allow to Arietta to reach Internet using your PC as a gateway.

Ubuntu Linux

Insert Arietta to the USB port of your PC and check if it has been recognized:

$ lsusb

Bus 001 Device 008: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS Gadget

Check the list of net port available you will find something like this:

$ sudo ifconfig

enx0adeed67240d: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
    inet6 fe80::500e:4e90:7876:c864  prefixlen 64  scopeid 0x20<link>
    ether 0a:de:ed:67:24:0d  txqueuelen 1000  (Ethernet)
    RX packets 39  bytes 5825 (5.8 KB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 11  bytes 1878 (1.8 KB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

The port name enx0adeed67240d will chat any time you will insert the Arietta. To avoid that create this file:

$ nano /etc/udev/rules.d/70-persistent-net.rules

with this content:

SUBSYSTEM=="net", ACTION=="add", ATTRS{idVendor}=="0525", ATTRS{idProduct}=="a4a2", NAME="arietta0"

detach and insert again the Arietta and type:

$ sudo ifconfig

arietta0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
    inet6 fe80::6034:75f7:8cb2:1f66  prefixlen 64  scopeid 0x20<link>
    ether f2:4f:ae:5a:3c:fd  txqueuelen 1000  (Ethernet)
    RX packets 38  bytes 5502 (5.5 KB)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 8  bytes 1375 (1.3 KB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Assign statically an IP addres to the arietta0 net port:

$ sudo nmcli con add type ethernet ifname arietta0 con-name usb0-static ip4

Then try to ping Arietta:

$ ping

You could use also the hostname arietta saved on the file /etc/hostname on the Arietta microSD:

$ ping arietta.local
64 bytes from ( icmp_seq=116 ttl=64 time=0.466 ms
64 bytes from ( icmp_seq=117 ttl=64 time=0.427 ms

Try to open an SSH section with Arietta:

$ ssh root@arietta.local
root@arietta.local's password: acmesystems

Try to open the Arietta web page from your web browser:

Share the Internet link of your Ubuntu Linux PC with Arietta

Edit this file:

$ sudo /etc/sysctl.conf

and add this line:


then type these commands

sudo iptable class='acmetable's -t nat -F
sudo iptable class='acmetable's -F
sudo iptable class='acmetable's -t nat -A POSTROUTING -o enp2s0 -j MASQUERADE
sudo iptable class='acmetable's -A FORWARD -i enp2s0 -o arietta0 -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptable class='acmetable's -A FORWARD -i arietta0 -o enp2s0 -j ACCEPT

Try now to get access to internet from the Arietta command line

Windows 10

Insert Arietta to the USB port of your PC and check if it has been recognized launching the windows Control Panel:

  • Type Control Panel in the search bar and lauch the Control Panel App
  • Click on View devices and printers

Here you will find and Icon with the label USB serial adapter COMx

  • Right click the mouse on this icon and select Properties
  • Select the tab Hardware
  • Press the button Properties
  • Press the button Change settings
  • Select the tab Driver
  • Press the button Update Driver
  • Select the Item Browse my computer for drivers
  • Download on your PC this file and unzip it
  • Press the Browse... button and select the directory just uncompressed
  • Press the Next button

  • Press the Close button

The old icon will disappear from the Device and Printers windows and a new icon will appear with the label USB Ethernet/RNDIS Gadget

  • Right click the mouse on this icon and select Network settings
  • Select the item Change adapter settingson the right
  • Right Click the mouse on the Ethernet icon with the label Ethernet x - USB Ethernet/RNDIS Gadget and select the item Proprties
  • Select the item Internet protocol versione 4 (TCP/IPv4) and press the button Properties
  • Select the Use the following IP address and insert:
    • IP address:
    • Subnet mask:
    • Default gateway: (The IP of your LAN gateway)
  • Press the OK button
  • Press the Close button

Now your Arietta will be contacted using the IP or the Hostname arietta.local

MacOS Monterey

Insert Arietta to the USB port of your MAC and check if it has been recognized:

  • Click on the Apple logo on the top left of your screen and select System Preferences...
  • Click on Network icon
  • Click on the RNDIS/Ethernet Gadget item on the left
  • On Configure IPv4 field select Manually
  • IP Address :
  • Subnet Mask :
  • Router : Insert the IP of your LAN router
  • Press the Apply button

Open a terminal and type:



ping arietta.local

Open an SSH session by typing:

ssh root@arietta.local

Open the Arietta web page on http://arietta.local

Products related

Arietta G25

Features Index Buy

Linux System On Module
  • CPU Microchip AT91SAMG25
  • ARM9 @ 400 MHz
  • Armel architecture
  • DDR2 RAM 128/256 MB
  • Size: 53x25 mm
  • Plug-in module
  • 40 pins 2.54 mm pitch
  • Boot from uSD
  • Linux Kernel 5.15 LTS
  • Debian, Buildroot and Yocto Linux
  • Fully open source drivers

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