Raspberry Pi: Unterschied zwischen den Versionen
Aus Wiki_2020
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| (16 dazwischenliegende Versionen desselben Benutzers werden nicht angezeigt) | |||
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https://learn.adafruit.com/what-is-the-command-line/getting-a-terminal-on-your-raspberry-pi | [[Category:Raspberry Pi]] | ||
https://www.piwheels.org<br> | |||
[[pihole aufsetzen - How To]]<br> | |||
https://skeleter.wordpress.com/2014/04/06/raspberry-pi-externe-datenspeicher-einbinden/<br> | |||
''Raspi .xpm Icon-Dateien Aufbau'' https://en.wikipedia.org/wiki/X_PixMap<br> | |||
https://www.hackster.io/kamal-khan/desktop-shortcut-for-python-script-on-raspberry-pi-fd1c63<br> | |||
*'''USB-C Fehler Raspi 4''' | |||
- https://winfuture.de/news,109951.html<br> | |||
==== SenseHAT ==== | |||
es wird eine .txt und eine .png Datei benötigt!!<br> | |||
- Font https://github.com/astro-pi/python-sense-hat/blob/master/sense_hat/sense_hat_text.png<br> | |||
the place where SenseHAT font lives: /usr/lib/python3/dist-packages/sense_hat/sense_hat_text.png<br> | |||
- api Referenz: https://pythonhosted.org/sense-hat/api/ | |||
https://learn.adafruit.com/what-is-the-command-line/getting-a-terminal-on-your-raspberry-pi<br> | |||
* '''bei Meldung''' | * '''bei Meldung''' | ||
E: Für das Depot »http://raspbian.raspberrypi.org/raspbian buster InRelease« wurde der »Suite«-Wert von »testing« in »stable« geändert. | E: Für das Depot »http://raspbian.raspberrypi.org/raspbian buster InRelease« wurde der »Suite«-Wert von »testing« in »stable« geändert. | ||
| Zeile 6: | Zeile 22: | ||
sudo apt update | sudo apt update | ||
==== rrd-Tool ==== | |||
'''install''' | |||
*'''install''' | |||
sudo apt-get install rrdtool | sudo apt-get install rrdtool | ||
für Python3 zusätzlich: | |||
sudo apt-get install librrd-dev libpython3-dev | |||
sudo python3.7 -m pip install rrdtool | |||
*''' Beispiel''' | |||
rrdtool create temperature.rrd --step 300 \ | rrdtool create temperature.rrd --step 300 \ | ||
DS:temp:GAUGE:600:-273:5000 \ | DS:temp:GAUGE:600:-273:5000 \ | ||
| Zeile 20: | Zeile 43: | ||
* If no new data is supplied for more than 600 seconds, the temperature becomes *UNKNOWN*. The minimum acceptable value is -273 and the maximum is 5'000. | * If no new data is supplied for more than 600 seconds, the temperature becomes *UNKNOWN*. The minimum acceptable value is -273 and the maximum is 5'000. | ||
A few archive areas are also defined. | |||
* The first stores the temperatures supplied for 100 hours (1'200 * 300 seconds = 100 hours). | |||
* The second RRA stores the minimum temperature recorded over every hour (12 * 300 seconds = 1 hour), for 100 days (2'400 hours). | * The second RRA stores the minimum temperature recorded over every hour (12 * 300 seconds = 1 hour), for 100 days (2'400 hours). | ||
* The third and the fourth RRA's do the same for the maximum and average temperature, respectively. | * The third and the fourth RRA's do the same for the maximum and average temperature, respectively. | ||
Aktuelle Version vom 22. August 2022, 21:00 Uhr
https://www.piwheels.org
pihole aufsetzen - How To
https://skeleter.wordpress.com/2014/04/06/raspberry-pi-externe-datenspeicher-einbinden/
Raspi .xpm Icon-Dateien Aufbau https://en.wikipedia.org/wiki/X_PixMap
https://www.hackster.io/kamal-khan/desktop-shortcut-for-python-script-on-raspberry-pi-fd1c63
- USB-C Fehler Raspi 4
- https://winfuture.de/news,109951.html
SenseHAT
es wird eine .txt und eine .png Datei benötigt!!
- Font https://github.com/astro-pi/python-sense-hat/blob/master/sense_hat/sense_hat_text.png
the place where SenseHAT font lives: /usr/lib/python3/dist-packages/sense_hat/sense_hat_text.png
- api Referenz: https://pythonhosted.org/sense-hat/api/
https://learn.adafruit.com/what-is-the-command-line/getting-a-terminal-on-your-raspberry-pi
- bei Meldung
E: Für das Depot »http://raspbian.raspberrypi.org/raspbian buster InRelease« wurde der »Suite«-Wert von »testing« in »stable« geändert. N: Sie müssen dies explizit bestätigen, bevor Aktualisierungen von diesem Depot angewendet werden können. Lesen Sie die apt-secure(8)-Handbuchseite, wenn Sie weitere Informationen benötigen.
sudo apt update
rrd-Tool
- install
sudo apt-get install rrdtool für Python3 zusätzlich: sudo apt-get install librrd-dev libpython3-dev sudo python3.7 -m pip install rrdtool
- Beispiel
rrdtool create temperature.rrd --step 300 \ DS:temp:GAUGE:600:-273:5000 \ RRA:AVERAGE:0.5:1:1200 \ RRA:MIN:0.5:12:2400 \ RRA:MAX:0.5:12:2400 \ RRA:AVERAGE:0.5:12:2400
- This sets up an RRD called temperature.rrd which accepts one temperature value every 300 seconds.
- If no new data is supplied for more than 600 seconds, the temperature becomes *UNKNOWN*. The minimum acceptable value is -273 and the maximum is 5'000.
A few archive areas are also defined.
- The first stores the temperatures supplied for 100 hours (1'200 * 300 seconds = 100 hours).
- The second RRA stores the minimum temperature recorded over every hour (12 * 300 seconds = 1 hour), for 100 days (2'400 hours).
- The third and the fourth RRA's do the same for the maximum and average temperature, respectively.
