AI - topsites

 https://www.futuretools.io/

https://theresanaiforthat.com/

AI Text-to-Speach services / Voice clone / Music generation

Music generation:

splashmusic.com - generate full length songs

 lofi generator #1 #2 #3 #4
#4 lofi playlist

 

Text-to-Speech

https://github.com/suno-ai/bark - Realistic

https://weilbyte.github.io/tiktok-tts/ - TikToks TTS

https://app.uberduck.ai

 

 Voice Cloning

https://beta.elevenlabs.io/speech-synthesis

https://fakeyou.com/

https://app.uberduck.ai/speak#mode=tts-basic&voice=rick-sanchez

Other:

Automatic transcriber

Tutorials:

https://rentry.org/AI-Voice-Cloning - Voice cloning using tortoise-tts

mqtt

Mqtt tools

Mqtt explorer - Install tools for testing mqtt.

mosquitto_pub  - Unix tool for testing

https://testclient-cloud.mqtt.cool/ - Online tool

 

Patho-mqtt guide

Patho-mqtt guide with tls

 

 Brokers:

• Hivemq
• Mosquitto

 

QoS Level	Benefits
QoS 0	- Lowest overhead
	- Fast message delivery
	- No guaranteed message delivery
	- No message retransmissions
	- Suitable for non-critical data or real-time updates
	- Minimal impact on network bandwidth
	- Simple and efficient for scenarios where message loss is acceptable
QoS 1	- Ensures at least once delivery
	- Minimal message duplication
	- Suitable for scenarios where some duplicates are acceptable, but loss is not
	- Guarantees that messages are not lost
	- Requires acknowledgement (PUBACK) for every message
	- Provides a balance between reliability and efficiency
QoS 2	- Ensures exactly once delivery
	- No message duplication
	- Suitable for mission-critical and highly reliable applications
	- Guarantees that messages are not lost or duplicated
	- Most reliable but involves more overhead
	- Requires a complex handshake (PUB, PUBREC, PUBREL, PUBCOMP) for every message

 Connecting to mosquito TLS

I successfully established a secure TLS/MQTT connection between a publisher, a broker, and a subscriber. Here's the step-by-step procedure I followed:

1. Generate a private key:
   openssl genrsa -out client.key

2. Generate the Certificate Signing Request (CSR):
   openssl req -out client.csr -key client.key -new

3. Submit the CSR content to test.mosquitto.org/ssl/ and obtain the "client.crt" file.

4. Download the "mosquitto.org.crt" from test.mosquitto.org/.

5. Ensure all the following files are in the same folder:
   - client.crt
   - client.csr
   - client.key
   - mosquitto.org.crt

6. To publish, use the following command:
   mosquitto_pub --cafile mosquitto.org.crt --key client.key --cert client.crt -h test.mosquitto.org -m "Hello World" -t "test" -p 8884 -d

7. On the subscriber side, use the following command:
   mosquitto_sub -h test.mosquitto.org -t "test" -p 8884 --cafile mosquitto.org.crt --key client.key --cert client.crt -d

I followed this procedure on my Ubuntu PC, and the TLS/MQTT connection is working flawlessly. 

Links

This guide demonstrates how to act as your own certificate authority (CA)

Atviro kodo įrenginiai

 https://wiki.pine64.org/wiki/Main_Page

Vilniaus virtualus viešojo transporto žemėlapis

 https://judu.lt/viesojo-transporto-keleiviams/virtuali-svieslente/

Logging Levels

System logger

$ journalctl --unit=service

$ journalctl -fu service # To follow log as with tail -f

 
To limit journal logging:

$ sudo nano /etc/systemd/journald.conf
Uncomment
SystemMaxUse=100M
sudo systemctl restart systemd-journald

$ journalctl --disk-usage # How much space is used

Restart system logging
$ sudo systemctl restart rsyslog # resets /var/log/syslog, deamong.log
$ sudo systemctl restart logrotate

/usr/sbin/logrotate -f /etc/logrotate.d/spaikon # Force run logrotate

Show detailed debug trace
from loguru import logger
@logger.catch # Stack trace

Python logger

When a logger is created, the level is set to NOTSET (which causes all messages to be processed when the logger is the root logger, or delegation to the parent when the logger is a non-root logger).


Note that the root logger is created with level WARNING.

Level	Numeric value
CRITICAL	50
ERROR	40
WARNING	30
INFO	20
DEBUG	10
NOTSET	0

Documentation:

https://docs.python.org/3/howto/logging.html

InfluxDB

Web interface: http://localhost:8086

Package info:
$ sudo apt list --installed | grep influx
influxdb2/now 2.7.0-1 arm64 [installed,local]

installing influx:
$ sudo dpkg -i influxdb2-2.7.0-arm64.deb

watching influxdn disk-space
$ watch -d "sudo du -h /var/lib/influxdb/ | sort -rh | head -n 10"

Literals

y    year (12 months)
mo    month
w    week (7 days)
d    day
h    hour (60 minutes)
m    minute (60 seconds)
s    second
ms    milliseconds (1 thousandth of a second)
us or µs    microseconds (1 millionth of a second)
ns    nanoseconds (1 billionth of a second)

 

Websites:

About tasks:
https://docs.influxdata.com/influxdb/v2.7/process-data/get-started/

Python API:
https://docs.influxdata.com/influxdb/cloud/api-guide/client-libraries/python/

Down-sampling:
https://www.influxdata.com/blog/downsampling-influxdb-v2-0/

Examples:
https://github.com/influxdata/influxdb-client-python/tree/1ec64b7e1039c891ac3a667ee6697731c61ddbaf/examples