README.md, further optimization and added shell script files for the crontab: take_photo.sh and audio_message.sh.

README.md

@@ -26,6 +26,19 @@ __Installation des Betriebsystems auf dem Raspberry Pi__:<br>
 ![preview:](/2020-10-17_18-282.png?raw=true "Raspberry Pi and Camera Module connected.")
 
 
+# Playing audio Message - shell script
+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:
+```
+aplay /home/pi/Documents/ARES_TimeLapse/ARES_FotoText.wav
+```
+
+# Taking a Photo - shell script
+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:
+
+```
+#!/bin/sh
+raspistill -o /home/pi/Documents/ARES_TimeLapse/pic-`date +"%Y.%m.%d-%H:%M:%S"`.jpg -l /home/pi/Documents/Beamline-timeruffer/latest.jpg
+```
 
 # Cronjob
 <a href="https://www.stetic.com/developer/cronjob-linux-tutorial-und-crontab-syntax/ " target="_blank">Introduction: Crontab Syntax und Tutorial in Linux</a>
@@ -41,12 +54,20 @@ __Installation des Betriebsystems auf dem Raspberry Pi__:<br>
 └──────────── Minute (0-59)<br>
 
 **1) Used code for the ARES-time-lapse-crontab - Playing audio Message**:<br>
-`59 14 * * * /time-lapse_ARES_DESY/src/ARES_FotoText.wav` <br>
+`59 14 * * * /time-lapse_ARES_DESY/src/audio_message.sh` <br>
-Jeden Tag um 14:59 Uhr wird das Audiofile "ARES_FotoText.wav" abgespielt.
+Jeden Tag um 14:59 Uhr wird das Audiofile "audio_message.sh" abgespielt.
 
 **2) Used code for the ARES-time-lapse-crontab - Taking a photo**:<br>
-`* 15 * * * /time-lapse_ARES_DESY/src/ARES_...sh` <br>
+`* 15 * * * /time-lapse_ARES_DESY/src/take_photo.sh` <br>
-Jeden Tag um 15:00 Uhr, wird die Datei "ARES_...sh" abgespielt, um ein Foto zu schießen.
+Jeden Tag um 15:00 Uhr, wird die Datei "take_photo.sh" abgespielt, um ein Foto zu schießen.
+
+
+**List active Crontab(s)** <br>
+`~ crontab -l`
+
+**Remove active Crontab(s)** <br>
+`~ crontab -r`
+
 
 # ToDo's
 - [X] Add the right Cronjob file and description.

src/audio_message.sh

@@ -0,0 +1,3 @@
+#espeak --stdout "In five seconds will a photo been taken. Please step out of the cameras area. Photo will be taken in. . .  5. 4. 3. 2. 1. SHOT." | aplay
+aplay /home/pi/Documents/ARES_TimeLapse/ARES_FotoText.wav
+

src/take_photo.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+raspistill -o /home/pi/Documents/ARES_TimeLapse/pic-`date +"%Y.%m.%d-%H:%M:%S"`.jpg -l /home/pi/Documents/Beamline-timeruffer/latest.jpg