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Raspberry Pi Forum Raspberry Pi as a break "alarm"
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Forum Thread Details
  • Replies 13 replies
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  • raspberry_pi
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Raspberry Pi as a break "alarm"

Former Member
Former Member over 9 years ago

Hi.

 

We have a customer at work that has a broken system for the announcing the breaks for it's employees.

It is as simple as making a ringing sound at certain times a day.

 

I would have no problem getting this to work with a Windows PC, but that seems a bit excessive image

 

I know this would be possible with a RPI, but i don't know where to even begin.

The sound will be played on a system that is being fed with a simple mini-jack cable.

 

I would say i'm an advanced beginner with the Pi's.
I have used them as airplay devices, Kodi and some retropie.

 

I hope that someone can help me image

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  • Former Member
    Former Member over 9 years ago

    Hi all.

     

    I created a thread on another forum as well and i got basically the same answer image

     

    I think I got it made now.

     

    I've installed raspian.

    Chosen correct timezone in raspi-config, and disabled the gui.

    Used crontab to play a sound at the times it's needed.

     

    Which command do i use to get the Pi to sync with the NTP server with crontab? i could that an daily event to make sure the time is right.

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  • Former Member
    Former Member over 9 years ago

    Hi all.

     

    I created a thread on another forum as well and i got basically the same answer image

     

    I think I got it made now.

     

    I've installed raspian.

    Chosen correct timezone in raspi-config, and disabled the gui.

    Used crontab to play a sound at the times it's needed.

     

    Which command do i use to get the Pi to sync with the NTP server with crontab? i could that an daily event to make sure the time is right.

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  • clem57
    clem57 over 9 years ago in reply to Former Member

    Look at How to force a clock update using ntp? - Ask Ubuntu They do the following:

    $ date ; sudo service ntp stop ; sudo ntpdate -s time.nist.gov ; sudo service ntp start ; date
    Thu Jan 1 00:00:58 UTC 1970
    * Stopping NTP server ntpd [ OK ]
    * Starting NTP server [ OK ]
    Thu Feb 14 18:52:21 UTC 2013

    You can see the default time change to the correct time. You will need internet for above or local network if you have your own private NTP server.

    Clem

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