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  • Please help in programming EEPROM. | Free Microcontroller Projects - 8051-AVR-PIC
    CLR P2 0 LCALL DELAY LCALL I2C START MOV A 0xA0 LCALL I2C SEND LCALL ACK MOV A 0x10 LCALL I2C SEND LCALL ACK MOV A 0xA1 LCALL I2C SEND LCALL ACK MOV A 0x00 LCALL I2C SEND LCALL ACK LCALL I2C STOP AGAIN SJMP AGAIN I2C START I2C START SETB SDA LCALL DELAY SETB SCL LCALL DELAY CLR SDA LCALL DELAY CLR SCL LCALL DELAY RET I2C STOP I2C STOP CLR SDA LCALL DELAY SETB SCL LCALL DELAY SETB SDA LCALL DELAY CLR SCL LCALL DELAY RET I2C SEND BYTE I2C SEND RLC A MOV SDA C LCALL DELAY SETB SCL LCALL DELAY CLR SCL LCALL DELAY RET I2C RECEIVE BYTE I2C READ SETB SDA LCALL DELAY SETB SCL MOVC A A DPTR LCALL DELAY CLR SCL CLR SDA RET ACKNOWLEDGE ACK SETB SCL LCALL DELAY LCALL DELAY CLR SCL RET DELAY PROGRAM DELAY MOV R3 255 HERE MOV R4 255 HERE2 DJNZ R2 HERE2 DJNZ R1 HERE RET LCD CLEAR CLRLCD MOV A 01H LCALL COMNWRT LCALL DELAY MOV A 80H LCALL COMNWRT LCALL DELAY RET nikhildascl Apr 22 2012 1 You must log in or sign up to reply here Show Ignored Content Loading Similar Threads please help me to compile bas file farukmw Nov 24 2013 in forum BASCOM 8051 Projects Doubts Replies 2 Views 924 farukmw Nov 25 2013 someone please help me with this simple connection GSINGH Aug 24 2012 in forum Electronic Projects Design Ideas Reviews Replies 0 Views 685 GSINGH Aug 24 2012 Please Help with serial to pc Maged Jan 19 2012 in forum Electronic Projects Design Ideas Reviews Replies 0 Views 517 Maged Jan 19 2012 Please help me to fix this code for clock zaythf gem90 Dec 3 2011 in forum Project Doubts Replies 0 Views 600 zaythf gem90

    Original URL path: http://www.8051projects.info/threads/please-help-in-programming-eeprom.2528/ (2016-05-01)
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  • Recent Content by rajput | Free Microcontroller Projects - 8051-AVR-PIC
    microcontroller Control the speed and direction of a DC motor using 8051 microcontroller Post by sajivjess Jul 8 2013 in category Interfacing Resource Various supporting tools More software which is used for developing a microcontroller based project Post by Binu May 17 2013 in category 8051 Tools Find all content by rajput Find all threads by rajput Your name or email address Do you already have an account No create

    Original URL path: http://www.8051projects.info/members/rajput.168309/recent-content (2016-05-01)
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  • Automatic Room light Controller with Visitor Counter (AT89S52) | Page 3 | Free Microcontroller Projects - 8051-AVR-PIC
    IC you need a microcontroller programming kit please visit our kits page for more details J Binu Click here to get free blog Binu Sep 30 2007 24 msmuneer New Member Likes Received 0 Trophy Points 0 hello i am really confuse in the connection of 7 segment display with the microcontroller please help me i mean to say a of 7segment is connected to which pin of microcontroller etc msmuneer Oct 20 2007 25 msmuneer New Member Likes Received 0 Trophy Points 0 I cannot understand the purpose of using DS 1 in the coding i cannot find about it in any book can you tell me any web from which i can learn concept of ds in assembly msmuneer Oct 20 2007 26 Binu Administrator Likes Received 119 Trophy Points 63 DS Directive The DS Directive is used to reserve space in the currently selected segment in byte units It can only be used when ISEG DSEG or XSEG are the currently active segments The location counter of the segment is advanced by the value of the directive Care should be taken to ensure that the location counter does not advance beyond the limit of the segment The format for the DS Directive is optional label followed by one or more spaces or tabs followed by DS followed by one or more spaces or tabs followed by a number arithmetic expression or previously defined symbol no forward references allowed followed by an optional comment Below is an example of using the DS Directive in the internal Data Segment If for example the Data Segment location counter contained 48 decimal before the example below it would contain 104 decimal after processing the example DSEG Select the data segment DS 32 Label is optional SP BUFFER DS 16 Reserve a buffer for the serial port IO BUFFER DS 8 Reserve a buffer for the I O Taken from the 8051 Assembler mannual from metalink assembler J Binu Click here to get free 8051 Codes Binu Oct 21 2007 27 msmuneer New Member Likes Received 0 Trophy Points 0 hello sir what is the purpose of using reg 51 pdf file as a header in coding and u havent define the connection of 7segment please mark a b c d e f g connection on the coding msmuneer Oct 22 2007 28 msmuneer New Member Likes Received 0 Trophy Points 0 hello sir i cannot open the file reg 51 pdf because adobe reader is giving error that it is either not supported or file is damage please give another link msmuneer Oct 22 2007 29 Binu Administrator Likes Received 119 Trophy Points 63 Open it with notepad J Binu Click here to get free 8051 Codes Binu Oct 22 2007 30 You must log in or sign up to reply here Show Ignored Content Page 3 of 61 Prev 1 2 3 4 5 6 61 Next Loading Similar Threads automatic room light using atmega aarathiajith Sep 11 2012 in

    Original URL path: http://www.8051projects.info/threads/automatic-room-light-controller-with-visitor-counter-at89s52.30/page-3 (2016-05-01)
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  • Automatic Room light Controller with Visitor Counter (AT89S52) | Page 4 | Free Microcontroller Projects - 8051-AVR-PIC
    0D0H ACC DATA 0E0H B DATA 0F0H SP DATA 81H DPL DATA 82H DPH DATA 83H PCON DATA 87H TCON DATA 88H TMOD DATA 89H TL0 DATA 8AH TL1 DATA 8BH TH0 DATA 8CH TH1 DATA 8DH IE DATA 0A8H IP DATA 0B8H SCON DATA 98H SBUF DATA 99H BIT Register PSW CY BIT 0D7H AC BIT 0D6H F0 BIT 0D5H RS1 BIT 0D4H RS0 BIT 0D3H OV BIT 0D2H P BIT 0D0H TCON TF1 BIT 8FH TR1 BIT 8EH TF0 BIT 8DH TR0 BIT 8CH IE1 BIT 8BH IT1 BIT 8AH IE0 BIT 89H IT0 BIT 88H IE EA BIT 0AFH ES BIT 0ACH ET1 BIT 0ABH EX1 BIT 0AAH ET0 BIT 0A9H EX0 BIT 0A8H IP PS BIT 0BCH PT1 BIT 0BBH PX1 BIT 0BAH PT0 BIT 0B9H PX0 BIT 0B8H P3 RD BIT 0B7H WR BIT 0B6H T1 BIT 0B5H T0 BIT 0B4H INT1 BIT 0B3H INT0 BIT 0B2H TXD BIT 0B1H RXD BIT 0B0H SCON SM0 BIT 9FH SM1 BIT 9EH SM2 BIT 9DH REN BIT 9CH TB8 BIT 9BH RB8 BIT 9AH TI BIT 99H RI BIT 98H J Binu Click here to get free 8051 Codes Binu Oct 22 2007 32 Hmdtop New Member Likes Received 0 Trophy Points 0 hi i want really good project for my collage please offer me some Hi thank you Hmdtop Oct 26 2007 33 Binu Administrator Likes Received 119 Trophy Points 63 Please visit the projects page and there are many projects with circuit diagram PCB and source code J Binu Click here to get free 8051 Codes Binu Oct 26 2007 34 msmuneer New Member Likes Received 0 Trophy Points 0 i am unable to include reg 51 pdf file with the program i am using keil software to make hex file but it is giving SYNTAX ERROR msmuneer Oct 27 2007 35 msmuneer New Member Likes Received 0 Trophy Points 0 i think there is a problem in keil software can you make available hex file of this project i need it urgently msmuneer Oct 27 2007 36 msmuneer New Member Likes Received 0 Trophy Points 0 hello why u have not use reset button in this project plz mention connection of 7 segment with the microcontroller is it necessary to use ldr cant we use eye infra red sensors cant we use command DB instead of DS u are including reg 51 for DS command if i use DB then is there any need to include this file plz reply soon i will be waiting msmuneer Oct 27 2007 37 Binu Administrator Likes Received 119 Trophy Points 63 Use RIDE from www raisonance com to assemble the program else use ordinary assembler Please go through here for assembling your program http www 8051projects info forum topic asp TOPIC ID 173 For 7 seg display connection please visit http www 8051projects info codelibrary asp J Binu Click here to get free 8051 Codes Binu Oct 28 2007 38 msmuneer New Member Likes Received 0 Trophy

    Original URL path: http://www.8051projects.info/threads/automatic-room-light-controller-with-visitor-counter-at89s52.30/page-4 (2016-05-01)
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  • Automatic Room light Controller with Visitor Counter (AT89S52) | Page 5 | Free Microcontroller Projects - 8051-AVR-PIC
    DJNZ R1 HIGH BYTE MOV B 10D MOV A R6 DIV AB MOV R6 B MOV R7 A ENDD RET but this code is not understandable plz tell me purpose of ADD A 5 ADD A 2 CJNE R6 00D ADD IT SJMP CONTINUE ADD IT ADD A R6 CONTINUE MOV R6 A DJNZ R1 HIGH BYTE MOV B 10D MOV A R6 DIV AB what u r doing below HIGH BYTE label msmuneer Oct 29 2007 44 msmuneer New Member Likes Received 0 Trophy Points 0 my 2nd question is that u r using DS command for saving 8 bit data can we use DB command instead if we use DB command then is there any need to include reg 51 pdf msmuneer Oct 29 2007 45 msmuneer New Member Likes Received 0 Trophy Points 0 what should be the output of sensors in volts when there is no obsruction msmuneer Oct 31 2007 46 Binu Administrator Likes Received 119 Trophy Points 63 Please go through any Books on 8051 microcontroller for HEX to BCD convertion else use the following simple code for converting a 2digit HEx value max 63 to BCD upto 99 HEX2BCD MOV B 00H CJNE A 64H N100 NOT EQUAL 100D N100 JC LT99 JMP GT99 greater than 99D LT99 less than 99D continue SUB10 repeatedly subtaract 10D from Acc till reminder less than 10D CLR C CJNE A 0AH N10 NOT EQUAL 10D N10 JC LT10 reminder less than 10D SUBB A 0AH INC B loop counter JMP SUB10 GT99 CLR A output 00 only if greater than 99D LT10 SWAP A A contains low BCD nibble B contains high BCD nibble ORL A B SWAP A RET THIS ROUTINE ACCEPTS A BINARY NUMBER BETWEEN 0 99D 63H IN ACC CONVERTS TO BCD IF ACC 63H 99D OUTPUTS 00H Tou can use DB instead of DS but the include reg 51 pdf is nessary for the port declarations When there is no obsruction the output of the IC555 is 5v and the sensor ouput will be also high J Binu Click here to get free 8051 Codes Binu Nov 1 2007 47 ucpatnaik New Member Likes Received 0 Trophy Points 0 Dear Binu This ckt was assembled on your PCB The 7 seg multiplexing for one of the transistor is driven from pin 27 in the ckt as well as at the code As the PCB has the same at pin 26 we changed the code accordingly and used your on line assembler to get the HEX file which was lodaded to the 89S52 The 7 segment driving transistor collector resistors were taken as 1k instead of 2 2k for better illumination of the segments Base drive though not given in the circuit we took 2 2k Result In any case the 7 seg gives no glow Temporarily Sorting the collector emiter of the 7 seg drive transistors all segments of corrosponding 7 seg glow Even After 99 interruptions as per your code output

    Original URL path: http://www.8051projects.info/threads/automatic-room-light-controller-with-visitor-counter-at89s52.30/page-5 (2016-05-01)
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  • Automatic Room light Controller with Visitor Counter (AT89S52) | Page 6 | Free Microcontroller Projects - 8051-AVR-PIC
    really think that the code is wrong please check it with the 8051 simulator from www frontline electronics com which support multiplexed displays J Binu Click here to Assemble your 8051 Codes online Binu Nov 17 2007 53 ucpatnaik New Member Likes Received 0 Trophy Points 0 At normal time when the IR falls on the sensors then the IC555 output is on High level The above statement does not tally with the circuit you have given Please I request go through the circuit In normal situation the 555 output is low as I have clearly explained above How does the output of 555 remain high while pin 2 of 555 is high Request please recheck You might have tried the circuit with some other sensor and not on the TOSP This I am dead sure Thus What you are mentioning repeatedly shall hold good for a LDR used in place of TOSP I hope you shall appreciate that TOSP output goes low while IR falls on it and its a must no argument over it please The circuit asumes TOSP output as high while IR falls on it This is wrong Infact while TOSP output is low the Q4 and Q5 is off meaning its collector high Thus pin 2 of 555 is high that causes pin 3 low If you disagree with this basic fundamental theory of 555 TOSP please let me have your comments I have high respect for your knowledge so please try to rectify the projects as many are trying your circuits who are likely to get frusteted Patnaik ucpatnaik Nov 17 2007 54 ucpatnaik New Member Likes Received 0 Trophy Points 0 your code is perfectly ok but the way you explain in not in line with the ckt operation ucpatnaik Nov 18 2007 55 ucpatnaik New Member Likes Received 0 Trophy Points 0 I would suggest for all those who would like to try this ckt but want to have good illumination of the 7 seg LED pls connect 330 ohms 7 nos in series to the port pins rather than connecting them directly But you have to eliminete the collector resistors of the multiplexing transistors and connect directly to the common anode plus pin directly ucpatnaik Nov 18 2007 56 Binu Administrator Likes Received 119 Trophy Points 63 How did the seven segment displays works now Do you change anything in the circuit please post it here i have done this project before 4years thats y i cant explain it more briefy Please give out the explanation here little briefly J Binu Click here to Assemble your 8051 Codes online Binu Nov 19 2007 57 ucpatnaik New Member Likes Received 0 Trophy Points 0 uniformly brighter now as every segment is with separate resistor As against only one resistor in series with the common anode affecting illumination level for digits like 8 0 where many segments are on compared to 1 that results in larger voltage drop across the series resistor ucpatnaik

    Original URL path: http://www.8051projects.info/threads/automatic-room-light-controller-with-visitor-counter-at89s52.30/page-6 (2016-05-01)
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  • Automatic Room light Controller with Visitor Counter (AT89S52) | Page 61 | Free Microcontroller Projects - 8051-AVR-PIC
    how i replace CL100 transistor and which i use Click to expand rajput May 16 2015 601 You must log in or sign up to reply here Show Ignored Content Page 61 of 61 Prev 1 56 57 58 59 60 61 Loading Similar Threads automatic room light using atmega aarathiajith Sep 11 2012 in forum Project Doubts Replies 0 Views 1 292 aarathiajith Sep 11 2012 automatic room light controller with visitors counter suhani yadav Apr 13 2011 in forum Microcontrollers Replies 1 Views 1 856 coolest buddy Apr 22 2011 automatic room light and temperature control with visitor counter using 89s51 carrion Mar 2 2010 in forum Electronic Projects Design Ideas Reviews Replies 1 Views 3 684 albinvadakkekara Dec 19 2011 Automatic Room light Controller with Visitor Counter AT89S52 anishtholath Jan 9 2010 in forum Microcontrollers Replies 2 Views 3 042 albinvadakkekara Dec 19 2011 Automatic Room Light Controller with visitor counter Binu Nov 23 2009 in forum Project Kit s Album Replies 0 Views 10 087 Binu Nov 23 2009 Tags infrared microcontroller based counter room light controller visitor counter using 8051 sir Share This Page Tweet Your name or email address Do you already have an

    Original URL path: http://www.8051projects.info/threads/automatic-room-light-controller-with-visitor-counter-at89s52.30/page-61 (2016-05-01)
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  • room light controller | Free Microcontroller Projects - 8051-AVR-PIC
    it Buy projects Buy Custom Project room light controller These are all contents from Free Microcontroller Projects 8051 AVR PIC tagged room light controller Contents 2 Watchers 0 Views 544 Thread Automatic Room Light Controller Visitor Counter Hi binu ji I am designing a similar project like your automatic room light controller Visitor counter IÃ â â m in the half way mark The Thread by Gayan Soyza Oct 16 2007 10 replies in forum Electronic Projects Design Ideas Reviews Thread Automatic Room light Controller with Visitor Counter AT89S52 This Project Automatic Room Light Controller with Visitor Counter using Microcontroller is a reliable circuit that takes over the task of Thread by Binu Jun 2 2007 600 replies in forum Doubts in My Projects Showing results 1 to 2 of 2 Show Ignored Content Share This Page Tweet Your name or email address Do you already have an account No create an account now Yes my password is Forgot your password Stay logged in Free Microcontroller Projects 8051 AVR PIC Home Forums Tags Home Forums Forums Quick Links Search Forums Recent Posts Store Store Quick Links Resources Resources Quick Links Search Resources Most Active Authors Projects Old Projects Interfacing Code

    Original URL path: http://www.8051projects.info/tags/room+light+controller/ (2016-05-01)
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