School bell alarm clock software

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When the set time is arrived the relay will be turned on for 3 seconds and turns off. Change this if you need. Upload the modified code to Arduino. That concludes the project, if you have any questions regarding this project feel free to express in the comment section.

If you have any circuit related query, you may interact through comments, I'll be most happy to help! Your email:. Hi Kesav, for a 12V battery the lower threshold is around I am a student. I completed this project. But I am sometimes facing a problem that when the specified time is reached, the bell rings but doesnt stop automatically…. I need to press EXIT button to stop the bell…..

Plz help me ASAP. GR and request him to solve it for you. I need a motion detection based alarm and lighting system circuit. Features I need lights and alarm should turn on when detecting human movement Range is approximately 6 mtrs. After 30 seconds or 1 minute the lights and alarm should turn off automatically. Again it should turn on when detecting a movement. I hope you have a design already. Sir …still the problem exists…. I also connected diode…but the problem is same…I am using 1N diode….

Abhishek, how did you connect the external components, did you connect them over a breadboard or a PCB, please make sure that you connect these components by soldering over a PCb.

Let me know about the connections, If you have assembled the external parts on a PCB, and still getting the issue, then I may have to contact Mr. GR for the solution. I have connected all components on a breadboard…. But when the power supply to the bell and relay is cut off, the relay woks absolutely fine.

Its on according to set time and turns of accordingly. School Bell System. Home » School Bell System. Sorry, your browser doesn't support embedded videos.

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