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OrangePi OctoPrint Installation

This passage is based on YouTube Installing Armbian and OctoPrint on an Orange Pi , https://www.youtube.com/watch?v=LzLb_FnXu70. Update and upgrade your OS 1. sudo apt-get update 2. sudo apt-get upgrade Create your user and give it sudo permissions 3. sudo adduser octoprint 4. sudo usermod -a -G tty octoprint 5. sudo usermod -a -G dialout octoprint 6. sudo adduser octoprint sudo 7. sudo visudo Scroll to the bottom of the document, and add the line at the bottom octoprint ALL=(ALL) NOPASSWD:ALL Ctrl + O to save, Ctrl + X to exit Remove the password from the octoprint user 8. sudo passwd octoprint -d Install the required support software to make this all work 9. sudo apt-get install git python-pip python-dev python-setuptools psmisc virtualenv * This line cannot fully completed in my Armbian Focal with Linux 5.4.43-sunxi64. * Probably we need to install both Python 2.7 and Python3, try sudo apt-get install python2 sudo apt-get install python3 Switch to the octoprint user and confirm your
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When armbian-config works

I wrote several messages about the basic setup of Armbian on OrangePi. All of them were using line commands. Along the self-learning path, someday I found that there is armbian-config command that starts up a menu utility, roughly corresponds to raspi-config utility. However, before this Armbian version (20.02.1, Armbian Stretch for OrangePi Lite 2), I have a tough time dealing with this utility. Until today, I can say armbian-config works now. Therefore, many things can now be done in a menu-driven approach. Because I never lay down any can-opener style startup notes, this is the guide: Download an Armbian software from Armbian website. You will get a 7z zipped file in your downloads directory. Unzip the file. I just use 7zip Unzip Here feature. Use an SD card writer program (like Win32DiskImager) to write the unzipped file into the SD card. Connect OrangePi debug port to TTL-USB device. Connect USB to the computer, and startup PuTTY, open the connected USB COM port, with sp
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FTP Server vsftpd

This is a simple installation note for Linux FTP server vsftpd. I only want it to communicate with my PC Filezilla client to upload/download files. No fancy nor serious configuration wanted. 1. Install the software   sudo apt-get install vsftpd  2.  Edit configuration file sudo nano /etc/vsftpd.conf 3. Uncomment/change these lines and save the file local_umask = 022 write_enable = true  4. Start the service sudo systemctl start vsftpd  5. Make it a startup service sudo systemctl enable vsftpd 6. In case you changed some settings sudo systemctl restart vsftpd Use the default username and password. The home directory will be the user's directory. Kevin Lee 19 March 2020 Hong Kong.  
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Hello GPIO

We are flooded with GPIO information from RaspberryPi. Then we learned that OrangePi GPIO pin layout is compatible with RaspberryPi, but with some subtle difference in naming convention. If you are RaspberryPi fans, you will find it more difficult to use OrangePi GPIO, not only the naming is different, but you have to use another set of library calls. Also, the pin layout is upside down. This is how I setup GPIO in Python 3. First, prepare the Python environment, $ sudo apt-get install python3-setuptools $ sudo apt-get install python3-dev Then, install the pyA20 library, $ sudo pip3 install pyA20 Now install the library to manage the Orange Pi GPIO. $ cd $ git clone https://github.com/duxingkei33/orangepi_PC-gpio_pyH3 $ cd orangepi_PC_gpio_pyH3 $ sudo python3 setup.py install Here is the test program to turn LED ON/OFF every second, #!/usr/bin/env python3 # Turn LED On/Off with PA # Kevin Lee 31 Dec 2019 # Connect LED to OpiZ pin 25 (GND) & 26 (PA10) from pyA2
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Install/Setup Xfce and TightVNC to Armbian OrangePi

Following https://www.instructables.com/id/The-OrangePi-Lite/ , the next instruction after network started is usually VNC server setup. Many Internet resources suggested TightVNC, an open source software for this purpose. However, Armbian distribution for OrangePi does not include any X window desktop, therefore install TightVNC itself is just half of the journey. This is how I complete the work. 1. Make sure Armbian is updated: sudo apt-get update sudo apt-get upgrade 2. Install XFont used by TightVNC server sudo apt-get install xfonts-base 3. Install TightVNC server sudo apt-get install tightvncserver 4. Create a user dedicate for this service. I use user ID 'vnc' sudo adduser vnc gpasswd -a vnc sudo 5. Setup this user for VNC server, vncserver :1 We need to assign a password. No need to specify a view-only password. Use the command to confirm the server is running and the default options applied ps -ef | grep Xtightvnc 6. VNC Client can now conn
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Setup USB Camera to work in Octoprint

This passage summerize the website "Orange Pi Zero and Webcam for Octoprint", https://www.iot-experiments.com/orange-pi-zero-and-webcam-for-octoprint/, aimed to make my life easier. Check the USB webcam present, octoprint@orangepizero:~$ lsusb Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 002: ID 046d:0826 Logitech, Inc. HD Webcam C525 Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 007 Device 002: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub To discover webcam information, (octoprint@orangepizero:~$sudo apt-get install hwinfo) octoprint@ora
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Configure OrangePi Lite WiFi

There are many websites and Youtube videos show you how to install Armbian to OrangePi with a SD-card. There are many ways to connect to the initial console of the device. Most of them tell you to utilize the LAN interface. This is a quick and easy method, however, my OrangePi Lite simply lacks a LAN interface. We need to setup Wifi before we can use it for console connection. But without the console how can we setup Wifi connection? Finally I used a USB to TTL device. With only 3 wires I connected the device to OrangePi: Rx-Tx, Tx-Rx, and GND-GND. Then I can use PuTTY to bring up the console thru SSH. Up to this point basically I am following this website: https://www.instructables.com/id/The-OrangePi-Lite/ . I continued with the instructions and successfully connect to WiFi, but puzzle why I have do that with so many manual editings. Especially when I edit the /etc/network/interface file, it has a remark say "# Network is managed by Network manage". My question is can N
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