Try the following steps:

uci set onion.console.setup=1
uci set onion.console.install=1
uci commit onion
console-install-tool

Thanks to everyone for the answers and interesting stories! I solved my problem by applying the DS-DS converter LM2596.

Hello. Tell, please, how I can power my Omega2 from 3.7 volts? I know, exist board Power Dock, but I need compact solution.

@Lex-Slaghuis
The installer has installed everything correctly. It is so specifically conceived that when entering on 192.168.3.1, Onion OS was opened because Onion console is not installed in new Omega2 during installation. To fix this, you may need to edit the file /www/index.html

Hey. An update was recently released in which Onion added support for all Python2 modules for Python3: https://onion.io/2bt-python3-modules/
Try to enter

opkg install python3-onioni2c

Hey. I am very glad that this event happened! I hope that developers will more often tell us such wonderful news!

How I can install library onionI2C for Python3?

1. Is the pinout diagram from Оmega-2 suitable for Omega-2 +?
   

2. Can I use pins 6, 7, 8, 9 as GPIO?

3. Is there an Onion Gpio library for Python 3?

Thanks in advance for answers

@crispyoz
I bought another adapter with ASIX AX88179A chip.
Reinstalled the following modules:
kmod-mii
kmod-usb-net
kmod-usb-net-asix

root@Omega-31F1:~# modprobe asix
asix is already loaded
root@Omega-31F1:~# modprobe usbnet
usbnet is already loaded
root@Omega-31F1:~# modprobe mii
mii is already loaded

Command dmesg | grep usbcore printed following:
root@Omega-31F1:/etc/modules.d# dmesg | grep usbcore
[ 5.391249] usbcore: registered new interface driver usbfs
[ 5.396990] usbcore: registered new interface driver hub
[ 5.402486] usbcore: registered new device driver usb
[ 5.801747] usbcore: registered new interface driver usb-storage
[ 17.632985] usbcore: registered new interface driver btusb
[ 17.643265] usbcore: registered new interface driver cdc_acm
[ 17.905698] usbcore: registered new interface driver ums-alauda
[ 17.914983] usbcore: registered new interface driver ums-cypress
[ 17.924496] usbcore: registered new interface driver ums-datafab
[ 17.933704] usbcore: registered new interface driver ums-freecom
[ 17.943042] usbcore: registered new interface driver ums-isd200
[ 17.955095] usbcore: registered new interface driver ums-jumpshot
[ 17.964453] usbcore: registered new interface driver ums-karma
[ 17.974610] usbcore: registered new interface driver ums-sddr09
[ 17.984034] usbcore: registered new interface driver ums-sddr55
[ 17.993874] usbcore: registered new interface driver ums-usbat
[ 18.007211] usbcore: registered new interface driver usbhid
[ 18.026860] usbcore: registered new interface driver usblp
[ 18.067654] usbcore: registered new interface driver usbserial
[ 18.073744] usbcore: registered new interface driver usbserial_generic
[ 18.154428] usbcore: registered new interface driver asix
[ 18.162642] usbcore: registered new interface driver ch341
[ 18.177852] usbcore: registered new interface driver cp210x
[ 18.193761] usbcore: registered new interface driver ftdi_sio
[ 18.222649] usbcore: registered new interface driver pl2303
[ 18.268377] usbcore: registered new interface driver snd-usb-audio
[ 18.293507] usbcore: registered new interface driver uvcvideo
[ 18.310592] usbcore: registered new interface driver option

The problem is still not solved. Omega does not see the interface.
Maybe this is due to the fact that the adapter has a USB 3.0 interface?

@crispyoz
ifconfig

apcli0    Link encap:Ethernet  HWaddr 40:A3:6B:C7:31:F3
          inet addr:192.168.1.103  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::42a3:6bff:fec7:31f3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

br-wlan   Link encap:Ethernet  HWaddr 40:A3:6B:C7:31:F1
          inet addr:192.168.3.1  Bcast:192.168.3.255  Mask:255.255.255.0
          inet6 addr: fd1d:48c4:7633::1/60 Scope:Global
          inet6 addr: fe80::42a3:6bff:fec7:31f1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:2301 (2.2 KiB)

eth0      Link encap:Ethernet  HWaddr 40:A3:6B:C7:31:F2
          inet addr:192.168.1.102  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::42a3:6bff:fec7:31f2/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:112 errors:0 dropped:0 overruns:0 frame:0
          TX packets:114 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:23294 (22.7 KiB)  TX bytes:16976 (16.5 KiB)
          Interrupt:5

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:36 errors:0 dropped:0 overruns:0 frame:0
          TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3661 (3.5 KiB)  TX bytes:3661 (3.5 KiB)

ra0       Link encap:Ethernet  HWaddr 40:A3:6B:C7:31:F1
          inet6 addr: fe80::42a3:6bff:fec7:31f1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:6

insmod kmod-usb-net-rtl8152

Failed to find kmod-usb-net-rtl8152. Maybe it is a built in module ?

insmod kmod-usb-net

Failed to find kmod-usb-net. Maybe it is a built in module ?

When I insert the USB adapter

 usb 1-1: new high-speed USB device number 2 using ehci-platform

When I remove the USB adapter

usb 1-1: USB disconnect, device number 2

Hello. I need connect a USB-Ethernet adapter to my Omega2+. I use adapter on chip RTL8153.
The Raspberry Pi3 detects the new interface, but the Omega2 does not.
I installed the packages kmod-usb-net-rtl8152 and kmod-usb-net.
Tell me, can I somehow make my Omega2 see this adapter? Maybe someone has already done this, which adapter model you used.

The model is made in cubesat 1u format. Functions performed:

1. Collecting data from sensors (temperature, pressure, humidity, acceleration along three axes, battery voltage, GPS data) and sending them over the radio channel.
2. Single-axis orientation along the vertical axis using the reaction wheel. Fuzzy logic is used to set the angular velocity of the reaction wheel.
   Demonstration
   If you have any questions, I will be happy to answer them.

@crispyoz I am connecting Omega-2 + via a homemade board (3.3v to vin). Now I connected it to Power dock 2. The metal cover is also very hot (burns finger). I remember that some time ago I could safely touch the lid for a long time. Current consumption approx. 500 mA

Mem: 47396K used, 77412K free, 88K shrd, 6936K buff, 18144K cached
CPU: 0% usr 0% sys 0% nic 99% idle 0% io 0% irq 0% sirq
Load average: 0.06 0.30 0.17 1/52 1933
PID PPID USER STAT VSZ %VSZ %CPU COMMAND
1834 1826 root R 1216 1% 0% top
1825 1293 root S 1132 1% 0% /usr/sbin/dropbear -F -P /var/run/dropbear.1.pid -p 22 -K 300 -T 3
222 2 root IW 0 0% 0% [kworker/0:1]
1592 1 mosquitt S 3320 3% 0% mosquitto -c /etc/mosquitto/mosquitto.conf
1539 1 root S 1968 2% 0% /usr/sbin/onion-helper
1061 1 root S 1796 1% 0% /sbin/rpcd
1199 1 root S 1656 1% 0% /sbin/netifd
1465 1 nobody S 1568 1% 0% avahi-daemon: running [Omega-3929.local]
1 0 root S 1552 1% 0% /sbin/procd
1328 1 root S 1532 1% 0% /usr/sbin/uhttpd -f -h /www -r Omega-3929 -x /cgi-bin -u /ubus -t 60 -T 30 -k 20 -A 1 -n 3 -N 100 -R -p 0.0.0.0:80 -p [::]:80
1087 1 root S 1436 1% 0% /sbin/blockd
1228 1 root S 1432 1% 0% /usr/sbin/odhcpd
1791 1 dnsmasq S 1324 1% 0% /usr/sbin/dnsmasq -C /var/etc/dnsmasq.conf.cfg01411c -k -x /var/run/dnsmasq/dnsmasq.cfg01411c.pid
1734 1 nobody S 1304 1% 0% /usr/sbin/shellinaboxd -t --service=/:LOGIN --css /usr/lib/shellinabox/style.css
1758 1734 nobody S 1304 1% 0% /usr/sbin/shellinaboxd -t --service=/:LOGIN --css /usr/lib/shellinabox/style.css
1044 1 root S 1228 1% 0% /sbin/logd -S 64
687 1 root S 1216 1% 0% /bin/ash --login
1508 1199 root S 1216 1% 0% udhcpc -p /var/run/udhcpc-apcli0.pid -s /lib/netifd/dhcp.script -f -t 0 -i apcli0 -x hostname:Omega-3929 -C -O 121
1396 1199 root S 1216 1% 0% udhcpc -p /var/run/udhcpc-eth0.pid -s /lib/netifd/dhcp.script -f -t 0 -i eth0 -x hostname:Omega-3929 -C -O 121

I noticed that my Omega2 immediately after switching on heats up to 60 degrees Celsius (metal cover). Don't touch it. Is this the norm? It seems to me that it was less hot before.