76 lines
2.9 KiB
Markdown
76 lines
2.9 KiB
Markdown
# Introduction
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This project describes a Raspberry Pi - time-lapse setup for the ARES beam line building project at DESY.
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**Installation**:<br>
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`git clone http://inetsrv.no-ip.org:3000/mwio/time-lapse_ARES_DESY.git`
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# ARES project setup status
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**Part I**:<br>
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**Part II**:<br>
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**Raspberry Pi Setup**:<br>
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- Raspberry Pi ... Model
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- Raspberry Pi Gehäuse
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- Camera Module (standard version)
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- 16GB Samsung Pro microSDHC I Karte
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__Installation des Betriebsystems auf dem Raspberry Pi__:<br>
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<a href="https://www.raspberrypi.org/documentation/installation/installing-images/README.md" target="_blank">Introduction: Installing operating system images on the Raspberry Pi</a>
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# Playing audio Message - shell script
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For this job we will use **aplay**. is a command-line soundfile recorder for the ALSA soundcard driver. It supports several file formats and multiple soundcards with multiple devices. Make a new file called "audio_message.sh" for example. This file will contain the following lines:
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```
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aplay /home/pi/Documents/ARES_TimeLapse/ARES_FotoText.wav
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```
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# Taking a Photo - shell script
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For this job we will use **raspistill**. raspistill is a command line tool for capturing still photographs with the camera module. Make a new file called "take_photo.sh" for example. This file will contain the following lines:
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```
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#!/bin/sh
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raspistill -o /home/pi/Documents/ARES_TimeLapse/pic-`date +"%Y.%m.%d-%H:%M:%S"`.jpg -l /home/pi/Documents/Beamline-timeruffer/latest.jpg
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```
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# Cronjob
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<a href="https://www.stetic.com/developer/cronjob-linux-tutorial-und-crontab-syntax/ " target="_blank">Introduction: Crontab Syntax und Tutorial in Linux</a>
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**Crontab Syntax**:<br>
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◦ ◦ ◦ ◦ ◦ auszuführender Befehl<br>
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┬ ┬ ┬ ┬ ┬<br>
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│ │ │ │ │<br>
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│ │ │ │ └──── Wochentag (0-7, Sonntag ist 0 oder 7)<br>
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│ │ │ └────── Monat (1-12)<br>
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│ │ └──────── Tag (1-31)<br>
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│ └────────── Stunde (0-23)<br>
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└──────────── Minute (0-59)<br>
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**1) Used code for the ARES-time-lapse-crontab - Playing audio Message**:<br>
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`59 14 * * * /time-lapse_ARES_DESY/src/audio_message.sh` <br>
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Jeden Tag um 14:59 Uhr wird das Audiofile "audio_message.sh" abgespielt.
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**2) Used code for the ARES-time-lapse-crontab - Taking a photo**:<br>
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`* 15 * * * /time-lapse_ARES_DESY/src/take_photo.sh` <br>
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Jeden Tag um 15:00 Uhr, wird die Datei "take_photo.sh" abgespielt, um ein Foto zu schießen.
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**List active Crontab(s)** <br>
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`~ crontab -l`
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**Remove active Crontab(s)** <br>
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`~ crontab -r`
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# ToDo's
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- [X] Add the right Cronjob file and description.
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<!--- - [ ] {{{color(red, Warning example.)}}} ) -->
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<!--- - [-] Half-checked. ) -->
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