I am putting together a motion sensor and camera. To test the effectiveness of the motion sensor, I would like to temporarily have the system make a beep in the speaker which is integral to my monitor connected via a HDMI cable to the Pi.

I would be grateful for help in how I go about programming this.


closed as too broad by techraf, Milliways, Steve Robillard, Jacobm001 Jan 19 '18 at 2:17

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • Have you been able to play other audio from the monitor speakers? Perhaps try playing an audio file with a media player to test. If that works, then all you'll have to do is generate a beep in your favourite programming language. Otherwise, it'd be useful if you could edit explaining what happens when you try to play audio. – Aurora0001 Jan 12 '18 at 19:55
  • The monitor speakers work with my Windows PC. I've only just started working with the PI. I've set up the night vision system with an IR camera and a PIR sensor at a very basic level hich works. I would like ot tet the moition sensor by having a beep every time it picks up movement. I have no idea how to go about this, and hope that someone can provde me with simple code. – epzcaw Jan 12 '18 at 20:03
  • Have you even bother to search for an answer/code? – MatsK Jan 12 '18 at 22:09

Does the display have on-board speakers? If so, audio should play back over HDMI without any special configuration.

  • Yes the display has on-board speakers. But I don't know how to generate audio from the Raspberry Pi. I was hoping there might be some simple command whihc would generate a sound. I've found out how to get the sound to go via the HDMI. I just need the sound now! – epzcaw Jan 12 '18 at 20:07
  • 2
    If I play videos using omxplayer /path/to/video.mp4 to my TV using an HDMI cable, the audio plays through the TV speakers with no additional configuration. Audio playback goes through the TV speakers as well. – bobstro Jan 12 '18 at 20:11

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