you can get the ODROID with HDMI (monitor/screen) output: https://www.pollin.de/p/odroid-xu4-einplatinen-computer-samsung-exynos-5422-2-gb-2x-usb-3-0-810409 for 80€.
or the NAS/SATA variation (headless, no GPU, no HDMI, no screen/monitor) : https://www.pollin.de/p/odroid-hc1-einplatinen-computer-fuer-nas-und-cluster-anwendungen-810766 for 60€.
What SoC are you using?
The SoC is a Samsung Exynos5422 Octa.
What GPU does it include?
An ARM Mali-T628 6 Core.
Complex components such as the XU4 processor may reach temperatures as high as 95°C. At high temperatures, the processor will throttle itself and operate slower so that temperatures do not continue to increase.
The 30-pin GPIO port can be used as GPIO/IRQ/SPI/ADC, and the 12-pin GPIO port can be used as GPIO/I2S/I2C for electronics and robotics. The GPIO pins on an ODROID-XU4 are a great way to interface with physical devices like buttons and LEDs using a lightweight Linux controller. If you’re a C/C++ or Python developer, there’s a useful library called WiringPi that handles interfacing with the pins, which is described in Chapter 4. Note that all of the GPIO ports are 1.8Volt, and the ADC inputs are limited to 1.8Volt. If a sensor or peripheral
needs higher voltage, the GPIO ports may be level-shifted to 3.3V or 5V using the XU4 Level Shifter Shield.
Serial console port
Connecting to a PC gives access to the Linux console. You can monitor the boot process, or to log in to the XU4 to perform root maintenance.
Note that this serial UART uses a 1.8 volt interface, and it is recommended to use the USB-UART module kit available from Hardkernel.
A Molex 5268-04a (2.5mm pitch) is mounted on the PCB, and its mate is Molex 50-37-5043 Wire-to-Board Crimp Housing.
RTC (Real Time Clock) backup battery connector
If you want to add a RTC functions for logging or keeping time when offline, just connect a Lithium coin backup battery (CR2032 or equivalent). All of the RTC circuits are included on the ODROID-XU4 by default. It connects with a Molex 53398-0271 1.25mm pitch Header, Surface Mount, Vertical type (Mate with Molex 51021-0200).
The Realtek RTL8211F is a highly intergrated 10/100/1000M Ethernet transceiver that complies with 10Base-T, 100Base-TX, and 1000Base-T IEEE 802.3 standards.
USB MTT hub controller
The Genesys GL3521 is a 2-port, low-power, and configurable
USB 3.0 SuperSpeed hub controller.
community support forum: https://forum.odroid.com/
download the software
load it onto sdcard
warning! POTENTIAL DATALOSS! selecting the wrong device can OVERWRITE DATA ON YOUR COMPUTER ATTACHED HARDDISKS!
insert sdcard into your sdcard reader..
wget http://de.eu.odroid.in/ubuntu_16.04lts/ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img.xz; # download image lsblk; # make sure you identify the right hardware. NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 119.2G 0 disk ├─sda1 8:1 0 49G 0 part /projects ├─sda5 8:5 0 67.4G 0 part / └─sda6 8:6 0 2.9G 0 part [SWAP] sr0 11:0 1 1024M 0 rom mmcblk0 179:0 0 14.9G 0 disk └─mmcblk0p1 179:1 0 14.9G 0 part # mmcblk0p1 is the first partition on device mmcblk0 (the sdcard) apt-get install xz-utils; # install maybe missing unpacking software md5sum ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img.xz; # check if md5sum matches unxz ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img.xz; # unpack the image umount /dev/mmcblk0p1; # unmount sdcard time # write directly md5sum -c ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img.xz.md5sum; # verify downloaded file has no errors ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img.xz: OK # two possible ways to continue # write directly unpack on the fly xzcat /download/folder/ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img.xz | sudo dd bs=41 of=/dev/mmcblk0 & watch kill -USR1 $(pgrep ^dd); # watch progress, it will copy 1.8GByte sync; # run this to write disk cache to disk # or # unpack first un-xz ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img.xz; # unpack 1.8GByte # then write dd bs=1M if=/download/folder/ubuntu-16.04.3-4.14-minimal-odroid-xu4-20171213.img of=/dev/mmcblk0; # write image to sdcard sync; # run this to write disk cache to disk
depending on if you can connect a monitor or not:
- insert micro sdcard…
- LAN connect ODROID XU4 to a DHCP-server ((DSL) router/fritzbox with DHCP enabled)
- LAN connect PC/Laptop to the same DHCP-server
- start wireshark on your laptop and power on ODROID XU4.
networking: dhcp and finding odroid’s ip
can be a little pain in the a….fternoon.
the ubuntu ODROID XU4 image does not come with a fixed IP, so you will have to connect it to some sort of DHCP-server (router) in order to ssh into it, or install the dhcp-server-service under debian 8. (maybe as VirtualBox VM).
you can also use wireshark and to listen to network activity related to the odroid (dhcp-offer) and find it’s IP this way.
you are looking for simething like:
15 2.286036000 Wibrain_30:cf:9b Broadcast ARP 60 Who has 192.168.0.1? Tell 192.168.1.101
or use nmap network scanner to find it’s ip…
nmap -n -v -p 1-255 -n -sS 192.168.10.0/24 Initiating SYN Stealth Scan at 22:21 Scanning 192.168.10.10 [255 ports] Discovered open port 22/tcp on 192.168.10.1
modify the above line depending in what kind of subnet your router is operating. (192.168.XXX.XXX)
ssh into it
usr: root / usr: odroid pwd: odroid root@odroid:~# hostnamectl Static hostname: odroid Icon name: computer Operating System: Ubuntu 16.04.3 LTS Kernel: Linux 4.14.5-92 Architecture: arm
CONGRATULATIONS! YOU LOGGED IN SUCCESSFULLY THE FIRST TIME TO YOUR EMBEDDED POWERHOUSE!
fix the ip
to not have to hassle with dhcp servers again one can change the ip to fixed via:
fill it with this content:
# The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 192.168.0.111 netmask 255.255.255.0 gateway 192.168.0.1 dns-nameservers 192.168.0.1
modify the orange parts so it fits your LAN settings – then type:
if everything went straight… you should be able to ping the odroid on 0.111 and ssh into it on 0.111
messing with the odroid
the first thing you probably do with a new system is check for updates…
if your network settings are correct your odroid should be able to access the internet.
ping yahoo.com; # check if internet is working apt update; # update package index Hit:1 http://ports.ubuntu.com/ubuntu-ports xenial InRelease Hit:2 http://ppa.launchpad.net/saiarcot895/myppa/ubuntu xenial InRelease Get:3 http://ports.ubuntu.com/ubuntu-ports xenial-updates InRelease [102 kB] Hit:4 http://deb.odroid.in/5422-s xenial InRelease Get:5 http://ports.ubuntu.com/ubuntu-ports xenial-backports InRelease [102 kB] Get:6 http://ports.ubuntu.com/ubuntu-ports xenial-security InRelease [102 kB] Get:7 http://ports.ubuntu.com/ubuntu-ports xenial-updates/main Sources [286 kB] Get:8 http://ports.ubuntu.com/ubuntu-ports xenial-updates/main armhf Packages [587 kB] Get:9 http://ports.ubuntu.com/ubuntu-ports xenial-updates/universe armhf Packages [499 kB] Fetched 1678 kB in 2s (667 kB/s) Reading package lists... Done apt upgrade; # upgrade system The following packages have been kept back: linux-image-xu3 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. apt install linux-image-xu3; # force upgrade of this package # what follows is this scary message that one accepts by selecting "No" # then an output like this should follow... apt autoremove; # remove packages that have become obsolete reboot; # reboot now to load new kernel Connection to 192.168.0.111 closed by remote host. Connection to 192.168.0.111 closed. ping 192.168.0.111; # after round about 30 seconds the odroid xu4 should have rebooted and respond to your pings PING 192.168.0.111 (192.168.0.111) 56(84) bytes of data. 64 bytes from 192.168.0.111: icmp_seq=27 ttl=64 time=1.12 ms 64 bytes from 192.168.0.111: icmp_seq=28 ttl=64 time=0.513 ms 64 bytes from 192.168.0.111: icmp_seq=29 ttl=64 time=0.480 ms apt install htop vim rsync; # install cool software task monitor htop, vim, rsync htop; # and start it # as you can see the 8x CPUs of the odroid xu4 are pretty bored right now
apt install sysbench; # let's install them some work mkdir /scripts vim /scripts/bench_cpu.sh #!/bin/bash NUM_CORES=$(grep -c ^processor /proc/cpuinfo) echo "============ CPU MIPS and FLOPS" cat /proc/cpuinfo | grep -ie hardware; cat /proc/cpuinfo | grep -ie model; cat /proc/cpuinfo | grep -ie mips; cat /proc/cpuinfo | grep -ie flops; echo "============ CPU BENCHMARK" sysbench --test=cpu --cpu-max-prime=20000 run --num-threads=$NUM_CORES
:wq save and quit or download it.
wget http://dwaves.de/wp-content/uploads/2017/05/bench_cpu.sh_.txt; # download script mv bench_cpu.sh_.txt bench_cpu.sh; # rename chmod +x /scripts/bench_cpu.sh; # make script executable /scripts/bench_cpu.sh; # run it ============ CPU MIPS and FLOPS Hardware : ODROID-XU4 model name : ARMv7 Processor rev 3 (v7l) model name : ARMv7 Processor rev 3 (v7l) model name : ARMv7 Processor rev 3 (v7l) model name : ARMv7 Processor rev 3 (v7l) model name : ARMv7 Processor rev 3 (v7l) model name : ARMv7 Processor rev 3 (v7l) model name : ARMv7 Processor rev 3 (v7l) model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 84.00 BogoMIPS : 84.00 BogoMIPS : 84.00 BogoMIPS : 84.00 BogoMIPS : 120.00 BogoMIPS : 120.00 BogoMIPS : 120.00 BogoMIPS : 120.00 ============ CPU BENCHMARK sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 8 Doing CPU performance benchmark Threads started! Done. Maximum prime number checked in CPU test: 20000 Test execution summary: total time: 37.4554s total number of events: 10000 total time taken by event execution: 299.4689 per-request statistics: min: 23.26ms avg: 29.95ms max: 44.59ms approx. 95 percentile: 40.59ms Threads fairness: events (avg/stddev): 1250.0000/327.26 execution time (avg/stddev): 37.4336/0.01
so the benchmark ran in 37 seconds.
on an QuadCore Intel(R) Core(TM) i5-4200U CPU @ 1.60GHz the benchmark run in 14.60 seconds.
so the 8x core ODROID X4U is 2.5 times slower than the 4x core i5 at 1.60 GHZ using all available cores.
while doing this
vim /scripts/cpu_temp.sh #!/bin/bash while true ; do cpu_temp=$(< /sys/class/thermal/thermal_zone0/temp) cpu_temp=$(($cpu_temp/1000)) echo $cpu_temp C sleep 1; clear; done # executes COMMAND every second
i monitored the temp of the cpu for around 30minutes while running all 8 cores full speed.
the system is PASSIVELY cooled and seems to throttles the CPUs automatically when 80 degrees Celsius are reached.
maximum measured temp was 82 Celsius (179.6 F).
the passively cooled case got warm but not uncomfortably hot. i have heard raspberry had problems with heat.
when the benchmark was over the temps dropped instantly to 53 C.
Real Time Clock: RTC
just as the Raspberry pi, the odroid needs a battery to keep clock when it is turned off.