You will need an Android Terminal. You can turn on the default one in the developer settings. Need to turn on developer mode?
You will also need to enable root which can also be done in the Developer settings
Open up the terminal app and run
su
rpi3-audio-jack.sh
More info here
The default strength for new passwords created on cPanel and WHM looks to be 65.
Note that increasing the strength should not disable any passwords that are under the threshold.
Open Tools -> Accounts -> Select account and hit Properties -> Servers & Advanced
Change the server settings and ports and Apply.
You may get the following alert in LibreNMS. Basically you need to install python 3 to keep things up to date.
Python 3 is required to run LibreNMS as of May, 2020. You need to install Python 3 to continue to receive updates. If you do not install Python 3 and required packages, LibreNMS will continue to function but stop receiving bug fixes and updates.
Install Python 3 with yum, or apt if you are on a Debian based distro.
sudo yum install python3
sudo pip3 install -r /opt/librenms/requirements.txt
Run the following commands to make sure that LibreNMS is working correctly and is up to date.
cd /opt/librenms sudo ./validate.php sudo ./daily.sh
https://help.ui.com/hc/en-us/articles/204977444-airFiber-Updating-the-Firmware
Quick list of commands
ssh ubnt@192.168.1.20 <- Replace with username and IP address cd /tmp wget http://dl.ui.com/firmwares/airfiber11X/v4.1.0/AF11.v4.1.0.bin mv AF11.v4.1.0.bin fwupdate.bin /sbin/fwupdate -m
/sbin/fwupdate -m
Wait for it to finish upgrading
Screen is a handy tool that can help you run scripts on servers remotely without having to worry about the session getting terminated. It seems to operate kinda like a virtual console.
Create a new session with a specified name
screen -S SessionName
Example output below. Create session named testsession and print screen sessions.
[bob@localhost imapsync]$ screen -S testsession [bob@localhost imapsync]$ screen -ls There are screens on: 3313.testsession (Attached) 1 Sockets in /var/run/screen/S-bob. [bob@localhost imapsync]$
You can disconnect from a screen session by hitting ctrl + a and then ctrl +d
“ctrl + a” then “ctrl + d”
You can list the screen sessions with
screen -ls
Example
[bob@localhost imapsync]$ screen -ls There are screens on: 3212.testsession (Detached) 2556.xap (Detached) 2 Sockets in /var/run/screen/S-bob. [bob@localhost imapsync]$
You can reconnect to a screen session with
screen -r testsession
To terminate a screen session, connect to that session and then on a clear line hit ctrl + d
Same way as if you were closing a remote ssh connection.
In Vi you can use the following command to search for a pattern and delete all those lines
:%g/pattern-to-search-for/d
To inverse the operation and delete all lines not matching the pattern, change g to v
:%v/pattern-to-search-for/d
The LuminOx Oxygen sensor seems to be a pretty decent O2 sensor and easy to get setup and running.
| Pin | Designation |
| 1 | Vs (+5V) |
| 2 | GND (0V) |
| 3 | 3.3V UART* Sensor Transmit |
| 4 | 3.3V UART* Sensor Receive |
| * 5V tolerant |
Fortunately wiring up the LuminOx O2 Sensor to an Arduino is super easy
In the code example below we will use pins 10 and 11 to communicate with the sensor. So you can wire it up as follows
sensor pin 1 -> 5V power
sensor pin 2 -> Ground
sensor pin 3 -> pin 10
sensor pin 4 -> pin 11
Should be able to just copy and past the code into the arduino editor and upload it.
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX (O2 Pin 3), TX (O2 Pin 4)
void setup() {
Serial.begin(9600);
mySerial.begin(9600);
}
void loop() {
if (mySerial.available()) {
Serial.write(mySerial.read());
}
}Open up the serial console to view the sensor output
Helpful links
Datasheet: https://www.sstsensing.com/product/luminox-optical-oxygen-sensors-2/
Arduino forum: https://forum.arduino.cc/index.php?topic=601622.15
Sketch uses 444 bytes (1%) of program storage space. Maximum is 32256 bytes.
Looks like this can randomly happen. Things to try to resolve the problem
More information here
https://arduino.stackexchange.com/questions/23620/problem-uploading-to-arduino-uno
In the Outlook “Tell me what you want to do” search area, type COM Add-ins and Launch the COM Add-ins
Find the Add-in and remove it
