Set alarm for PR12 interface with PIC16F877A

[IsaacChuah90]

Hey guys,can I know how to set the alarm for the alarm clock project I'm doing now?Im using PIC16F877A instead of PIC16F876A,all the connections of the components I connected according to the cytron project PR12.Seeking for helps..thank you!!!

[Brian Griffin]

Hey guys,can I know how to set the alarm for the alarm clock project I'm doing now?Im using PIC16F877A instead of PIC16F876A,all the connections of the components I connected according to the cytron project PR12.Seeking for helps..thank you!!!

Just giving you a small nudge, with the pseudocode:

CODE: SELECT_ALL_CODE

IF current time equals to alarm time
   Turn On Buzzer.

I assume that you can easily turn the buzzer on or off. It's pretty simple. (And please, with a transistor as well)

[IsaacChuah90]

Ok.So the sample source code for the PR12 can I use in PIC16F877A?I connected all the port according to the schematic of PR12,I just change the PIC from PIC16F876A to PIC16F877A.Seeking for helps.thanks a lot guys.

[sich]

If you connect everything according to PR12's circuit, it should work. What's the problem that you are facing?

[IsaacChuah90]

Because after I connected all the components according to the schematic of PR12, my LCD just show nothing instead of showing a clock such as 00:00:00 am/pm. What's that problem? And the sample source code for PR12 sure can function well with PIC16F877A? Thanks guys!

[TeoYX]

Hi, i notice there is a capacitor at MCLR but not in other project. Can i know what is the function of this capacitor for?

Please help. Thanks.

[TeoYX]

Another confusing me is about the pin RC3 and RC4. Both of them are set as input or output?

Hope can get reply soon. Thanks.

[ober]

Hi, i notice there is a capacitor at MCLR but not in other project. Can i know what is the function of this capacitor for?

Basically, the cap is just for de-bouncing purpose, try googling it. You should be able to get some idea. It is to filter the signal of switch. It is just good practice to apply it. Some case, it is not required.

[IsaacChuah90]

Sorry for making you guys confuse about my post, I'm here to ask for setting an alarm for the rtc. Hope can get replies from you guys soon. If can you guys can post your replies at 'DS1307 RTC interface with PIC16F877A' this post in order to not making you guys confuse. Really sorry to you guys, hope you guys don't mind. Thanks. Seeking for helps in setting alarm. Hope to see you guys replies soon.

[TeoYX]

Hi, i notice there is a capacitor at MCLR but not in other project. Can i know what is the function of this capacitor for?

Basically, the cap is just for de-bouncing purpose, try googling it. You should be able to get some idea. It is to filter the signal of switch. It is just good practice to apply it. Some case, it is not required.

Thanks.