# Introduction
This project describes a Raspberry Pi - time-lapse setup for the ARES beam line building project at DESY.
**Installation**:
`git clone http://inetsrv.no-ip.org:3000/mwio/time-lapse_ARES_DESY.git`
# ARES project setup status
**Part I**:
**Part II**:
**Raspberry Pi Setup**:
- Raspberry Pi ... Model
- Raspberry Pi Gehäuse
- Camera Module (standard version)
- 16GB Samsung Pro microSDHC I Karte
__Installation des Betriebsystems auf dem Raspberry Pi__:
Introduction: Installing operating system images on the Raspberry Pi
# 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
Introduction: Crontab Syntax und Tutorial in Linux
**Crontab Syntax**:
◦ ◦ ◦ ◦ ◦ auszuführender Befehl
┬ ┬ ┬ ┬ ┬
│ │ │ │ │
│ │ │ │ └──── Wochentag (0-7, Sonntag ist 0 oder 7)
│ │ │ └────── Monat (1-12)
│ │ └──────── Tag (1-31)
│ └────────── Stunde (0-23)
└──────────── Minute (0-59)
**1) Used code for the ARES-time-lapse-crontab - Playing audio Message**:
`59 14 * * * /time-lapse_ARES_DESY/src/audio_message.sh`
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**:
`* 15 * * * /time-lapse_ARES_DESY/src/take_photo.sh`
Jeden Tag um 15:00 Uhr, wird die Datei "take_photo.sh" abgespielt, um ein Foto zu schießen.
**List active Crontab(s)**
`~ crontab -l`
**Remove active Crontab(s)**
`~ crontab -r`
# ToDo's
- [X] Add the right Cronjob file and description.