112 Threads found on edaboard.com: Interface 89c51
I am doing a final year project and my project is "voice based home automation system" .
Im using ic hm2007 for voice recognition and want to interface it with muc 89c51.
i just want to control 3-4 lights.How this can be done?
please any1 can help me??
Microcontrollers :: 01-18-2014 06:06 :: jashbharwada :: Replies: 2 :: Views: 1174
You'll find a clear timing digram of "External Data Memory Write Cycle" in 89c51 hardware description. Data is put on P0 during nWR low, for about 6 clock cycles.
But how do yout want to latch the data in the second 8051? It has no bus device interface or input capture feature. The idea simply doesn't work.
You can of course set the data stat
Microcontrollers :: 10-17-2013 06:09 :: FvM :: Replies: 3 :: Views: 544
I m doing one project in which i want to interface GSM Module and RF-ID Reader to 89c51..
but problem is there is only one UART for 89c51..
I do not have an AT89c51 available....
Then why stated
Microcontrollers :: 07-26-2013 05:48 :: bigdogguru :: Replies: 42 :: Views: 2022
Check these link:
- - - Updated - - -
Check these link:
Microcontrollers :: 07-10-2013 18:49 :: Ogu Reginald :: Replies: 2 :: Views: 1452
This link having Lcd interfacing with 8051. If you more circuits search in google.
Microcontrollers :: 06-14-2013 15:48 :: amayilsamy :: Replies: 1 :: Views: 881
I also use JYMCU bluettoth wit a pic18F46K22
you can directly use this module with 5V power supply .
and connect UART TX and RX to the BT module trough a resistor of 1K ohms value..
no need to uses special level adaptor.
It's works by default at 9600 bauds..
No need to programm something for the bluetooth device
I use it as transparent
Microcontrollers :: 04-27-2013 12:49 :: paulfjujo :: Replies: 23 :: Views: 3327
i used a RL=47Kohm and a pcf8591t adc , i interfaced the analog Vout of the mQ-7 sensor with one of pcf8591 analog input pins then how should i interface the pcf with the 89c51 microcontroller ?
if there any thing wrong with the things that i have interfaced plz tell me ..
this is for my project
and pls i want (...)
Microcontrollers :: 03-18-2013 16:10 :: Majd995 :: Replies: 0 :: Views: 911
hi guys pls help me for programming for temp and humidity sensorsy-hs-220 interfacing with 89c51.
pls i need it urgently
See this example (register on site to get full access to material, registration is free) :
How to interface Humidity Sensor with 8051 Microcontroller (AT89c51)
Professional Hardware and Electronics Design :: 03-16-2013 14:38 :: tpetar :: Replies: 1 :: Views: 762
i want interface rs232 with 89c51 .
my main ajanda is what i writing in hyper terminal that may be display in LCD.
that is possible
pls help me.
Microcontrollers :: 03-07-2013 10:01 :: ronkpatell :: Replies: 21 :: Views: 1669
hi everyone i want to do one project like i want to interface dc motor by using the driver ic l293d with microcontroller 89c51 RD2 IC by using the concept of pwm can anyone help in that....
Microcontrollers :: 01-11-2013 05:16 :: pradeep23 :: Replies: 0 :: Views: 571
I am new in microcontroller world, want to interface two PC's using MAX232 and 89c51 microcontroller for Simplex Serial port communication and Bi-directional communication.
However, Simplex communication is working through microcontroller on hyper terminal, what should be the code to interface Bi-Directionally.
Thanks in advance.
Microcontrollers :: 12-08-2012 09:22 :: adilaslam :: Replies: 1 :: Views: 612
How to interface LCD with 89c51
LCD TO 89c51
Elementary Electronic Questions :: 11-23-2012 16:20 :: tpetar :: Replies: 3 :: Views: 2590
I want to interface my AC voltage signal (which is coming from transformer) to ADC0808 with 89c51 microcontroller. so prblem is that if i will connect my transformer o/p +ve wire to the analog channel 1 then where should i connect my -ve terminal, i can't connect it to the ground because ground of IC is DC whereas my signal is AC. So pleas
Microcontrollers :: 08-23-2012 09:43 :: girish09 :: Replies: 3 :: Views: 841
89S51 (I really dont know why people use 89c51) with keypad, RFID and LCD
You have source in C, description, video presentation,... just register its free.
Microcontrollers :: 05-08-2012 22:33 :: tpetar :: Replies: 1 :: Views: 1232
I have a problem interfacing RF module(433Mhz ask) to 8051(atmel 89c51).
I am using two micro controllers
First: I have written a simple program to transmit 'A' serially if P1^0 is high in transmitter micro controller(uc1). and at receiver micro controller(uc2) to take serial data and put in on P1 of (uc2
Microcontrollers :: 03-30-2012 02:23 :: IanP :: Replies: 4 :: Views: 3017
Read the thread on the link, try do your own coding with the sample, no one will spoon feed you.
how to interface atmel 24C02 with 89c51
Hobby Circuits and Small Projects Problems :: 02-13-2012 07:45 :: abidr :: Replies: 1 :: Views: 1444
I AM TRYING A HALLO WORLD PROGRAM ON LCD BUT ITS NOT WORKING
I DOWNLOADED DIFFERENT TUTORIALS AND WORKED THE WAY GIVEN IN THOSE TUTORIALS...
MY CODE IS:
Microcontrollers :: 12-20-2011 15:01 :: mrarslanahmed :: Replies: 27 :: Views: 3612
write a simple serial program for both the controllers and test if they work properly ( individually) then interface the controller with these modules...
---------- Post added at 20:37 ---------- Previous post was at 20:36 ----------
Embedded Linux and Real-Time Operating Systems (RTOS) :: 07-11-2011 15:07 :: ckshivaram :: Replies: 5 :: Views: 2812
I wants to use a 74hc595 to interface 7 segment display to 89c51 ...
What input should be given to the sh_cp st_cp and DS .
do i need to toggle the ips of sh_cp and st_cp for the 74hc595 as they are mentioned to be clock i/ps .
I am trying to run a basic program tyo understand the working of 74hc595
Microcontrollers :: 05-24-2011 11:40 :: deeplearns :: Replies: 4 :: Views: 1734
learn about microcontroller.. doing simple programming .. understand the concepts... interface the sensors one by one and finish the project..
come back again when you are struck.
no readymade projects delivered to door steps...............
Robotics and Automation Forum :: 05-13-2011 16:15 :: ckshivaram :: Replies: 3 :: Views: 3536
A mobile phone with USB interface can only be interfaced by an USB host, e.g. FTDI Vinculum or an USB microprocessor with host capabilities. Software is difficult as well.
Microcontrollers :: 04-28-2011 13:42 :: FvM :: Replies: 3 :: Views: 861
hi i am writing code for cc2500 interface 89c51 but its not working can some one give me help or code if any one have
Microcontrollers :: 04-25-2011 09:47 :: ud23 :: Replies: 2 :: Views: 1077
please help me i want to interface 24c16 eeprom with 89c51
i just want when the power cut and resume the power 89c51 should not reset, i want 89c51 start from that point where the power cut ,i don't know how to write eeprom interface code
my asm code is below,
Microcontrollers :: 04-04-2011 20:31 :: naeem_28 :: Replies: 17 :: Views: 1241
Check the code given here RFID Interfacing with 8051 Microcontroller (AT89c51) | interface RFID
The code and circuit is for 89c51 but that would work with 89s52 as well.
Microcontrollers :: 03-29-2011 07:30 :: sumit_sharma :: Replies: 1 :: Views: 1278
interface the lm35 to 0804.then control the 0804 with 8051,display the readings in 7 segment.just do google. you will get plenty of examples.
Microcontrollers :: 02-24-2011 09:52 :: microlab :: Replies: 3 :: Views: 2755
If the Nokia 2700 is unavailable, you can try one of the following, Nokia 6610, Nokia 6610i and, Ericsson T10.
I worked with these phones, they all have serial interface.
Another practical solution, as ckshivaram said, you can go for the GSM/GPRS modules or MODEMs.
Hope this helps.
Microcontrollers :: 02-03-2011 06:13 :: seadolphine2000 :: Replies: 8 :: Views: 1297
i am doing laser light data and voice communication project .i have few but major difficulties in interfacing photo diode to 89c51 to rxd pin can any one provide me the working circuit diagram of it?
Microcontrollers :: 01-08-2011 16:56 :: santoshaxl :: Replies: 4 :: Views: 4152
can i interface 12 bit ADC to 89c51 microcontroller?if micro controller is 8 bit..what does it mean?
Analog Circuit Design :: 10-18-2010 11:30 :: NARENDRA1234 :: Replies: 1 :: Views: 709
I tried to interface SPI EEPEOM with 89c51. i know 89c51 doesn't have SPI in hardware, so i write it in software and simulate it in proteus. The code i written is in below, but it doesn't working. please correct it, if there is any error in my code.
sbit sck = P2^0;
sbit swr = P2^1;
Microcontrollers :: 10-13-2010 13:27 :: arunraj1984 :: Replies: 2 :: Views: 1440
i want to interface 3310 with microcontroller 89c51..
can i interface it using serial port directly ?
PC Programming and Interfacing :: 07-30-2010 01:06 :: nayan_trivedi :: Replies: 5 :: Views: 1548
search google for 8051 microcontrollers by Mazidi.That book has same interface example
Microcontrollers :: 04-10-2010 10:10 :: engr.waqas :: Replies: 3 :: Views: 2117
I have to interface an NPN proximity switch to uC 89c51...
Please help me with a schematic on how to connect the sensor and how to code it..
The sensor is NPN and takes 5 to 24V input supply. And it gives the same at o/p..
Elementary Electronic Questions :: 04-08-2010 16:08 :: eshan7 :: Replies: 2 :: Views: 3043
I want to send a message to a Mobile Phone from a GSM activated by a Micro 89c51.I am using the following code. But the code is not working. Can anyone debug and correct it please......
Microcontrollers :: 04-05-2010 12:44 :: sudan :: Replies: 1 :: Views: 998
im doing my final yr project.. and i have close to 2 weeks to get this interface working..
Its like this..
Adc0804 goes to uC 89c51 .. to give output in LCD 2*16
this connection is made on bread board
the only output tht i get now is "sensor data"
after that nothing..
The attachment has all the text files containing the program for
Microcontrollers :: 03-29-2010 16:19 :: web_bug2005 :: Replies: 3 :: Views: 1058
i am doing a project of interfacing pc with an induction motor. All i have to do is to interface a triac with microcontroller. But for input voltage and triac gate pulse synchronization i have to use u208b. Anyone knows how to interface 89c51 and u208b?:|
Microcontrollers :: 03-21-2010 05:54 :: raxza :: Replies: 0 :: Views: 1092
i m working with Sim 300s v7.03 modem interfacing with 89c51... when i work seperately they r working well... i can see the results too... but wen i interface modem does not respond... wen i give the command from microcontroller modem led goes off for few seconds then it glows... can u help me to interface it properly... thank u...
Digital communication :: 03-17-2010 09:54 :: paramathma :: Replies: 3 :: Views: 5864
hi guys i am a 3rd year diploma student i need to interface st -tr2500 fsk transceiver, which has SPI with 89c51............can anybody help? project needs to be done before 20th of march...........
Microcontrollers :: 03-09-2010 13:22 :: yash199 :: Replies: 8 :: Views: 1241
I want to interface touchscreen with 89c51. I have ad7843 touchscreen digitiser IC. but I don't know how to interface that with 89c51. pls help me to proceed
Microcontrollers :: 04-15-2009 10:34 :: hk_parmar :: Replies: 3 :: Views: 1837
i want a c program on how to interface ds1307 with at89c51 and display the time on 8 bit lcd(2x 16).. plz help
Microcontrollers :: 02-25-2010 04:11 :: charry :: Replies: 3 :: Views: 3451
I need GPS to Microcontroller 89c51 coding. Please any one can help me ?
Microcontrollers :: 02-07-2010 01:13 :: sudan :: Replies: 0 :: Views: 1341
can i have interface code of adc0808 with 89c51.
Send me ur project
Microcontrollers :: 12-28-2009 13:12 :: binojkumar :: Replies: 2 :: Views: 1286
please help me
i want to interface fingerprint detector with microcontroller 89c51 and then i want to interface it with GSM moderm
any body have the circuit diagrm.
pls mail me
my email id is
Microcontrollers :: 10-13-2009 15:36 :: vicky89 :: Replies: 0 :: Views: 1409
Hi sir gud evening,i want some details of 24c04.plz give me detaqils hoe to interface to 89c51 microcontroller and also give the program for that.plz give me reply sir its urgent tome.
THANK YOU SIR.
Microcontrollers :: 09-22-2009 11:56 :: lavi :: Replies: 2 :: Views: 1754
hi..I tried to interface data signals to LCD(2 x16) via P1 and control bits via P2(RS/RW/EN).its the standard code in Mazidi book and still there is problem in LCD dispalying chars.I gave direct connectivity w/o any it ok?I suspect the hw.
Any adice please...?
Microcontrollers :: 07-14-2009 14:29 :: srikantan :: Replies: 6 :: Views: 2568
I have already interface PS2 Keyboard with microcontrller. now i want to inter face controller with computer as a keyboard. so how i start??
share some idea in this line...
Elementary Electronic Questions :: 07-07-2009 11:41 :: niravrede :: Replies: 1 :: Views: 996
Hi Can someone guide me the way to how to interface 2 Devices to a microcontroller via Serial port. I mean like I have to interface my controller 89c51 with GSM Modem as well as with PC. The data will be transfered to & from both the devices.
Thanks for giving the time to read my problem.
Microcontrollers :: 06-18-2009 16:15 :: lats :: Replies: 6 :: Views: 1907
I am using argox as-8250 ps2 based barcode scanner . I can easily interface ps2 keyboard with 89c51 but with the same ps2 port when I am using barcode scanner than sometimes it gives output and sometimes it is not. actually whwn we press the switch of scanner it should show the continuous light but here in my case on pressing the switch for a
Microcontrollers :: 04-15-2009 10:44 :: hk_parmar :: Replies: 1 :: Views: 1388
Do you want to interface the USB chip to some other device or you just want to control that peripheral...
The functionality of controlling LED or doing a particular command can be achieved using vendor commands...
Hobby Circuits and Small Projects Problems :: 03-17-2009 02:03 :: A.Anand Srinivasan :: Replies: 7 :: Views: 2909
m new here! and i need help , can anyone help me in how can i interface MT8888C chip with 89c51 microcontroller ? any thing useful ( like codes for example or documents)
Microcontrollers :: 02-03-2009 14:50 :: amol_friend1234 :: Replies: 0 :: Views: 797
here is the code iam trying to interface 8x8 dot matrix display to 89c51.. please help me out...
sfr col = 0xA0;
sfr row = 0x80;
sbit r1 = P0^0;
sbit r2 = P0^1;
sbit r3 = P0^2;
sbit r4 = P0^3;
sbit r5 = P0^4;
sbit r6 = P0^5;
sbit r7 = P0^6;
sbit r8 = P0^7;
Microcontrollers :: 12-24-2008 11:29 :: sriraj_jan :: Replies: 1 :: Views: 1757