tag:blogger.com,1999:blog-7481197986107611337.post6794715119797162464..comments2023-09-29T15:03:39.691+07:00Comments on PIC Microcontroller Note: DS1307 + PIC16F877AUnknownnoreply@blogger.comBlogger16125tag:blogger.com,1999:blog-7481197986107611337.post-54725383244505886752015-01-03T09:36:12.379+07:002015-01-03T09:36:12.379+07:00i want 7segment countdown timer with overflow mode...i want 7segment countdown timer with overflow mode pls helpAnonymoushttps://www.blogger.com/profile/18115490185233377233noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-77033351170688291632010-07-09T16:01:40.606+07:002010-07-09T16:01:40.606+07:00please i have a problem hear im not searching to h...please i have a problem hear im not searching to have the time ot the date ,i have to find how can i see in the lcdwhat i write in my pc <br />i know that i must add a connector db9 and an RS232 but i can't resolve the program<br />thanksamoshttps://www.blogger.com/profile/00923445430568138249noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-40152800244750371802010-01-07T18:43:14.946+07:002010-01-07T18:43:14.946+07:00I like your clock project very much. Btw, may I kn...I like your clock project very much. Btw, may I know what crystal are you using for that microcontroller? (Of course, it's understood that the DS1307's using a 32.768kHz crystal)<br /><br />Also, the "delay_ms(500)" in the infinite while loop caused the LCD to skip a few seconds periodically. I'm not sure why it happened on the microcontroller with 10MHz crystal. The nearest solution for me to prevent this from happening is decreasing the delay_ms to at least 50. :D<br /><br />If the crystal's speed is like 20MHz, I guess one can allow much more time for the HD44780 display to refresh itself. :DUnknownhttps://www.blogger.com/profile/16445816105102915052noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-9267828089699825642010-01-02T18:30:40.828+07:002010-01-02T18:30:40.828+07:00what MHz crystal are you using for DS1307???I am u...what MHz crystal are you using for DS1307???I am using 32.78 crystal...but the clock s running 35 minutes faster than normal time....saiboyzhttps://www.blogger.com/profile/05017283767427062345noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-3953620437115644272009-06-22T10:49:47.589+07:002009-06-22T10:49:47.589+07:00PLEASE MY FRIENDS I REQUEST YOU PEOPLE TO SEND ME ...PLEASE MY FRIENDS I REQUEST YOU PEOPLE TO SEND ME MULTISIM COMPONENT OF DS1307... SO THAT I CAN ALSO BUILD A DIGITAL CLOCK FOR MY PROJECT IN MY ACADEMIC.... PLEASE SEND MULTISIM COMPONENT OF DS1307 TO anand1586@yahoo.com.....please i request you friends.......<br /><br />thank you....Unknownhttps://www.blogger.com/profile/15228606756505328802noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-24023405777613812832009-04-19T00:08:00.000+07:002009-04-19T00:08:00.000+07:00What is the Value of the crystal attached to the D...What is the Value of the crystal attached to the DS1307? is it 32.7...kHz or?Cyril Davis-Adehttps://www.blogger.com/profile/06908380528358910628noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-42883975635712677182009-04-02T09:05:00.000+07:002009-04-02T09:05:00.000+07:00i have the simulation circuit in proteus7.2 and us...i have the simulation circuit in proteus7.2 and us CCS C compiler and C language program coding but failed to get result..Sitihttps://www.blogger.com/profile/01527468193990994180noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-44957776891231150592009-04-02T09:01:00.000+07:002009-04-02T09:01:00.000+07:00hi Mr. Punkky..congratulation..i already see your ...hi Mr. Punkky..congratulation..i already see your blog and its amazing me.look u are really expert with PIC.here i would like to have some help from u. i used five 7-,pic16f877a and bcd(binary code decimal) ic with 3 input switch of push button. the first input,when switch 1 is push, then then display will display A0000-A3333, switch 2 B3334-B6666 and switch 3 C6667-C9999. the counter will only count up when switch is push. lets says, present display is A2333, when push button 1 is pushed,it will count up to A2334. the scope of display may can be reduced to A000-A333 or A00-A33..thanks..i really hope that u can give solution to this problems.Sitihttps://www.blogger.com/profile/01527468193990994180noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-31561371869690130662009-03-25T01:15:00.000+07:002009-03-25T01:15:00.000+07:00hi benik .. any luck .. ??hi benik .. any luck .. ??Arjunhttps://www.blogger.com/profile/08250829231954011347noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-11059359332188775392009-02-03T17:08:00.000+07:002009-02-03T17:08:00.000+07:00Can anyone share PIC 16F877A interface to GSM Mode...Can anyone share PIC 16F877A interface to GSM ModemBenikhttps://www.blogger.com/profile/03961207780669881011noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-80986221947579549772009-01-06T05:38:00.000+07:002009-01-06T05:38:00.000+07:00PunkkyHave you come across a code/schematic that u...Punkky<BR/><BR/>Have you come across a code/schematic that uses a ds1307 that can count down to a set date/time? I'd like to see if I can make a DDD:HH:MM count down timer. Set the current date/time, set the target date/time and it displays the time remaining in a count downStevehttps://www.blogger.com/profile/01657360655906851897noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-72399009712219977902009-01-05T02:37:00.000+07:002009-01-05T02:37:00.000+07:00ah_bear, I have posted the detail about my answer ...ah_bear, I have posted the detail about my answer at http://picnote.blogspot.com/2009/01/simple-clock-using-ds1307-pic16f877a.html . Please take a look.punkkyhttps://www.blogger.com/profile/09291179320974512021noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-66358523420685435152009-01-05T00:28:00.000+07:002009-01-05T00:28:00.000+07:00Hello, ah_bearThis code is for reading time from t...Hello, ah_bear<BR/>This code is for reading time from the DS1307 so you have to write some values to DS1307 before you can read them. Please see http://picnote.blogspot.com/2008/08/ds1307-setting-time.html for writing values to the DS1307.<BR/>Just put the code for setting time before the while(1) loop.<BR/><BR/>My LCD Clock with DS1307 is now running just fine.punkkyhttps://www.blogger.com/profile/09291179320974512021noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-37366280659520230322009-01-04T01:23:00.000+07:002009-01-04T01:23:00.000+07:00i have build up everything exactly same with yours...i have build up everything exactly same with yours, but my LCD screen just show out <BR/><BR/>time : =1:=1:=1<BR/>date : =1/=1/20=1<BR/><BR/>, without counting also.<BR/>no matter how i try, it still same.can u give me some guide?ah_bearhttps://www.blogger.com/profile/12353510155608046756noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-85772007681151259992008-08-13T22:56:00.000+07:002008-08-13T22:56:00.000+07:00Please check out my post about this at http://picn...Please check out my post about this at http://picnote.blogspot.com/2008/08/ds1307-setting-time.htmlpunkkyhttps://www.blogger.com/profile/09291179320974512021noreply@blogger.comtag:blogger.com,1999:blog-7481197986107611337.post-15423553148183227132008-08-08T13:13:00.000+07:002008-08-08T13:13:00.000+07:00thanks for sharing the code.may i know how to set ...thanks for sharing the code.<BR/>may i know how to set the time??charliehttps://www.blogger.com/profile/09950720211004870869noreply@blogger.com