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microcontroller
what is the type of microprocessor used in 8051 microcontroller ?...
Electronic Elementary Questions :: 19 Oct 2007 8:01 :: ndru_w :: Replies: 13 :: Views: 876
replace an at89c2051 with at89s2051
hi!if anyone could help, i would like to know if i could replace an at89c2051 with at89s2051 without any modification in hardware and software. let me explain, i have an project of elektor (ir light dimmer) based on the c2051 uc that cannot be progra...
Microcontrollers :: 07 Oct 2007 21:26 :: sn_burki :: Replies: 12 :: Views: 1920
pulse width modulation
please help...can i use pulse width modulation with 89c2051 microcontroller?...and if, how can it be?...:cry:...
Microcontrollers :: 02 Oct 2007 3:51 :: Darth Maul :: Replies: 4 :: Views: 447
remote controlled light dimmer
hiim building a remote controlled light dimmer circuit.ive got to dim two lights.im using a phillips remote which uses the rc5 protocol. ive decoded the code from the remote but i now have to use a triac and control the intensity of the light. ill be...
Hobby Circuits and Small Projects Problems :: 11 Sep 2007 17:38 :: pilchard :: Replies: 12 :: Views: 5121
microcontroller-based motor control
i am having my research proposal this semester about a microcontroller-based 3 phase induction motor control. but im confused what shall i do first?...could you help me?...ill be using the at89c2051 microcontroller, supposing this is the only microco...
Microcontrollers :: 07 Sep 2007 6:07 :: vijaya_narayana :: Replies: 14 :: Views: 642
line follower robot
helo everyone.im newbie in micro and robotic, i try to build one, from this site. http://www.kmitl.ac.th/~kswichit/lfrobot/lfrobot.htm.thats robot is worked. but i need help to re-code using sdcc. from that site is using mc51. and this is original c...
Microcontrollers :: 01 Sep 2007 18:11 :: xmfa32 :: Replies: 0 :: Views: 297
at89c2051
what if i want to control three phase induction motor, will it still be the same the other motor, say for example its speed, using this microcontroller?......
Microcontrollers :: 05 Aug 2007 11:01 :: silic :: Replies: 2 :: Views: 231
tafe programmer an at89c2051-help!!!
i try to program a 2051 using tafe programmer(http://www.ic-prog.com/2051pv2.gif) and ic-prog.exe and it doesnt work to me..:(1) these connections must be done;--->89c2051 pin20(+5v), pin10(gnd), 74hc174 pin16(+5v) pin8(gnd)because they dont exist in...
Microcontrollers :: 04 Aug 2007 0:12 :: silic :: Replies: 3 :: Views: 588
create hex file...
hi,can someone create hex file from this source code in basic language,for atmel 89c2051 at 6 mhz,best regards...
Microcontrollers :: 21 Jul 2007 3:01 :: pasicr :: Replies: 0 :: Views: 144
please send to me firmware and schematic of at89c51
sorry , please help meim a student! ive just learn microcontroller! and i have some problems! pealse help me to solve thatwhich function is different between 89c51 and 89c2051! and i want to make a loader circuit of 89c2051 please send to me this sc...
Professional Hardware and Electronics Design :: 18 Jun 2007 12:54 :: pido :: Replies: 3 :: Views: 453
industrial microcontroller
hai allwhich microcontroller will you suggest for industrial mapplications?pic/avr/8051?my idea is to make a universal timer for industril usage so i should concider the worst surrounding conditions.what additional components should i add to my schem...
Microcontrollers :: 08 Jun 2007 9:01 :: mg_designs :: Replies: 14 :: Views: 822
led matrix display going to confusing condition
hi for all,i sold one big led message display with 1000 x 5 mm led.on the place where i put this display, i use power from line who also powered 20 neon lights. (i use pc smps)when i turn on the display start normaly, but after 10 seconds all leds go...
Microcontrollers :: 26 Apr 2007 18:40 :: pasicr :: Replies: 4 :: Views: 1293
universal infrared remote control receiver with 89c2051
hi @ll,i would like to build a universal infrared remote control receiver into a hobby grade project based on atmel 89c2051.there are many projects based on pic controllers as uir (12c509 and 16f84), uirt, irman and others.these devices receive ir an...
PC Programming and Interfacing :: 20 Apr 2007 16:38 :: JaMe :: Replies: 12 :: Views: 3226
best ide and compiler for 89c51
hi alls, i am programming at89c51 or at89s51 using kiel ide and c51 compiler ( i am programming with c) but this sompiler dont have the built in functions for delay();uart() and other modules we have to define fucntions is there any other compiler...
Microcontrollers :: 09 Apr 2007 3:14 :: dafahmi :: Replies: 1 :: Views: 285
eeprom 24c08 interfacing with 89c51
dear all,i am facing a problem to interface the 24c08 with 89c51 micro. actualy i am writing in assembly code. can any body send the assembly coding for the same. kidly help..........regardsmak...
Microcontrollers :: 27 Mar 2007 6:05 :: mak_goel :: Replies: 11 :: Views: 1395
any suggestion about this one….
hi all,i need your views about this http://www.amateurfunkbasteln.de/atprog/atmel_eng.html programmers for at89c1051/2051/4051. did anybody previously experienced with this programmer, like to share his views? is it working fine or not... i tried to ...
Microcontrollers :: 22 Mar 2007 7:57 :: woolungtea :: Replies: 5 :: Views: 834
unlock 89c2051
hello guys,i was curious to know if anyone successfully unlocked an 89c2051 (20 pin device)in order to read out the code.i know it is possible, i have seen it done in the past, but i could never accomplish this myself. i wrote a program for the at89c...
Microcontrollers :: 16 Mar 2007 19:46 :: johnsmith123 :: Replies: 4 :: Views: 417
89c2051 + key board
hai alli am intrested in interfacing the 4x4 matrix keypad to the 89c2051the problrm here is i can do it using two ports as shown in mazidibut i am using port 3 for some other purposeis it possible to interface the 4x4 matrix keyboard to the port1can...
Microcontrollers :: 14 Mar 2007 1:39 :: ARoque :: Replies: 5 :: Views: 435
problem with led message display from www.woe.de.vu
hi,i found this project on www.woe.de.vu. this is led message display with atmel 89c2051 and display driver max7219.i make this led display with 11 modules (each modul consist 64 individual leds).how, i have a problem. led mesage display work only wi...
Microcontrollers :: 09 Mar 2007 9:53 :: sofi_je :: Replies: 11 :: Views: 1479
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generate bin file from asm file for 89c2051
hi,i need software for generate bin file from asm file for 89c2051. i try with ml-asm51 and i receve 50 errors on this file.the original bin file from www.woe.de.vu work fine.i need to change something in asm file and generate bin file, but with ml-a...
Microcontrollers :: 26 Feb 2007 2:24 :: pasicr :: Replies: 2 :: Views: 231
sms controller from silicon chip magazine
i had saw many people here willing to build an sms controller. i decided to scan and attach the article sms controller published in the octomber-november 2004 issue of silicon chip magazine. the hex file for the microcontroller is included also....
Microcontrollers :: 21 Feb 2007 10:18 :: l_senthilkumar :: Replies: 43 :: Views: 6696
triac switch
hai alli would like to controll a triac bta12 using the 89c2051which will switch on the triac when an interrupt is occuredi want this triac to be on for both the cycles as i am connecting the triac to switch on a bulbcould anyone please provide the s...
Microcontrollers :: 16 Feb 2007 19:27 :: Ave_Rapina :: Replies: 8 :: Views: 657
urgent help plz
hello guys,plz tell me that i want to count lumps of cloth on the moving belt ..how i can i do---i think this is possible by means of infrared ....but how...plz plz do replysecondly tell me that i want to count the length of cloth on moving belt ......
Electronic Elementary Questions :: 14 Feb 2007 2:54 :: installer2001 :: Replies: 4 :: Views: 138
80c51 programmer
hi i need pcb and software for 80c51 device at89c51rc2 plcc44at89c51rd2 plcc44at89s51 plcc44i am amateur and need full information and pcb&schematic and softwarefor this device please helpme best regard...
Microcontrollers :: 12 Feb 2007 7:36 :: Unomano :: Replies: 23 :: Views: 5766
asm to bin conversion for atmel 89c2051
hi,i do not have experience with atmel micro. i need software for generate bin file from asm file for 89c2051,any sugestion,regards...
Microcontrollers :: 11 Feb 2007 18:23 :: manish12 :: Replies: 4 :: Views: 207
which is best controller to start
hii wants to start work on micro controllers please guide me which is the best controller to start work as i am new commer in uc world and which is the best tool for me...
Microcontrollers :: 24 Jan 2007 14:01 :: rudiso :: Replies: 51 :: Views: 8304
89c2051 moving text
hi, i want to use 89c2051 and 7 row 64 column moving text led display . a keyboard ps2 or other should be connectd. there is a diyi topic for same matter in this forum but i am not able to understand complete circuit di...
Microcontrollers :: 27 Dec 2006 5:18 :: IanP :: Replies: 1 :: Views: 384
how to interface grpical lcd module (128*64) with pic
can any body help me to interface grapical lcd module 128*64with pic microcontroller with circuit diagram and program...
Microcontrollers :: 26 Dec 2006 2:40 :: kutkm_ti :: Replies: 9 :: Views: 2274
help: 8051 programming
hello all,i am an undergraduate student of electrical enginnering.i want to learn 8051 programming. can anybody tell me which is the best book/resource to learn it??if anyone has got material on it plz post it or mail me to adnan.sana@gmail.comregard...
Microcontrollers :: 16 Dec 2006 3:10 :: ashad :: Replies: 20 :: Views: 1314
how to interface the rtc ht1380 with µ controller 89c51
dear all,help rquired to interface the rtc ht1380 with micro 89c51 in assembly coding only as i dont know c.kindly help.regardsmak added after 4 hours 57 minutes: any body help!!!!!!! added after 39 seconds: any body help!!!!!!! added after 1 minutes...
Microcontrollers :: 03 Dec 2006 19:40 :: manish12 :: Replies: 9 :: Views: 1104
89c51/89s51
hai allcan we load a program wrote for 89c51 to 89s51?or should we have tomake any changes?what are the steps to be taken when doing so?whats the difference between them? ml...
Microcontrollers :: 23 Nov 2006 6:59 :: vibeeshpv :: Replies: 8 :: Views: 2391
problem in keil
i am learning keil.i wrote small programs without interrupts they run wellthen i wrote a simplest program with interrupt it is giving error while building target.here is the screen dump:compiling int01.c...linking...*** error l121: improper fixup...
Microcontrollers :: 22 Nov 2006 12:05 :: nikhilele :: Replies: 7 :: Views: 516
at89c2051 applications
hi, im dany and i study electronics for my first degree.i need to do a hand in paper on the atmel 89c2051 microcontroller and among other issues that i need to write about in this work , i also need to give multiple examples of practical applications...
Hobby Circuits and Small Projects Problems :: 05 Nov 2006 2:14 :: the_risk_master :: Replies: 5 :: Views: 606
please help me in 89c2051
i want to use external intrrupt 1 but it does not work im new in this feild but i hope you help memy code is as followorg 0hajmp start--------------------------------------------------------org 03h ;external interrupt 0 ret...
Microcontrollers :: 03 Nov 2006 1:43 :: IanP :: Replies: 1 :: Views: 216
sleep mode in 8051
hi alli want to design a real time clock with 89c2051 and this clock will be displayed to lcd but the power must be a battery 3 v , so i need a help in how can i make the 89c2051 enter the sleep mode in order to save the power while timer1 is still w...
Microcontrollers :: 02 Nov 2006 5:30 :: ARoque :: Replies: 6 :: Views: 720
multiplexed 7-segment display
hi friends, the attached circuit diagram is of a multiplexed 4 digit display running from 89c2051. and below is the code written for it. im getting a flickering in the display. for example:- if i send value 8519 on display, the segment showing 1 (t...
Microcontrollers :: 28 Oct 2006 11:48 :: yaharoni :: Replies: 7 :: Views: 492
mega project: robotic land mine detector
im planning to make a land mine detector for a competition. can i get some suggestions for this?a playfield of 240 x 240x 5 cm (5 cm being the width, the base plywood and another plywood at 5cm height). the playfield will have a boundary of 5 cm heig...
Robotics and Automatics Forum :: 29 Sep 2006 1:12 :: nafaiz :: Replies: 39 :: Views: 4437
i am looking for the cheapest microcontroller
89c2051 is the best which i got uptill now.i donot want factory programmed controller i want to program them in batch of 10 at my place. although i donot have any problem if they are having otp, eeprom, or flash, programs are small and requirement ar...
Microcontrollers :: 28 Sep 2006 9:48 :: sci-3d :: Replies: 28 :: Views: 1608
moving message display
hi all, i have been trying to make a moving message(text) display just for experimental pupose, and many times i asked for help on forum but suggested site has no easy softwares to be understood. i want a easy software for it which is written in asse...
Microcontrollers :: 23 Aug 2006 14:06 :: CMOS :: Replies: 12 :: Views: 1500
c code example
hi guys, i need c code example for at89s51 or 52 or 53 using .....keil c or sc51 compiler. need the basic one, like led blinking, delay, loop, pwm, interrupt......starting to learn how to program the atmel 8051.plz help, thanks.......
Microcontrollers :: 19 Aug 2006 10:44 :: masud58 :: Replies: 6 :: Views: 540
hex keypad decoder problem
hi there, please help mei intended to make a 4x4 hex decoder using at89s2051, after i made the program, i tried it on at89s52, and its work, but when i tried to write the hex file into at89s2051 and tried it on the circuit, it didnt work, i use asm l...
Electronic Elementary Questions :: 05 Aug 2006 6:37 :: zhi_yi :: Replies: 6 :: Views: 282
line follower robot..
i trying to build a line follower robot using microcontroller..pls help me..need all the help..tnks in advance...
Microcontrollers :: 28 Jul 2006 4:18 :: sample :: Replies: 10 :: Views: 585
can any one help me with programming 89c2051 chip
hi i have made a manual programmer for 89c2051, it has dip switches to set the signals and code byte to be programmed. but the problem is when i follow the programming algoritm and try to read the signature bytes or flash, the controller does not r...
Microcontrollers :: 24 Jul 2006 10:51 :: nikhilele :: Replies: 3 :: Views: 240
powering keyboard without computer ? ;)
does a k/b need to initialized or something when its plugged in? this is what i have...+5v power (http://www.audiotstation.com/forum/showthread.php?s=&threadid=25715&highlight=usb+battery)----> +5v connected to pin4 / grnd connected to pin3 of male p...
Electronic Elementary Questions :: 24 Jul 2006 10:47 :: nikhilele :: Replies: 6 :: Views: 258
please help
hi to alli am facing a very difficult problem....i have make a project of remote light control with dimmeruisng 89c2051 published on elektor july/ august 2003i project is working fine but the problems are1)after storing the desired infrared code...th...
Hobby Circuits and Small Projects Problems :: 03 Jul 2006 22:26 :: mtl :: Replies: 2 :: Views: 228
atmel micro prog and downloader
hey ppl i need programmin hardware and software to download d program in atmel 89c51 micro..at89c51 24pc 0445 is d micro...
Microcontrollers :: 30 Jun 2006 14:10 :: bagi :: Replies: 3 :: Views: 357
two digits up & down counter
hi, alli am looking for two digits up & down counter with reset.this counter countes up from 0 to 99 and it is count down from 99 to 0.did anyone make like this project?if you made it would you please post it.i appreciate any help....
Microcontrollers :: 29 Jun 2006 16:43 :: sohail_akram :: Replies: 7 :: Views: 2733
noise immune microcontroller (8051 family)???
hello friends,can any one suggest a microcontroller which is highly immune to noise from 8051 family?i am currently using 89c2051 for my application but the circuit is to be placed in very noisy environment. noise level is high.so please suggest a mi...
Microcontrollers :: 21 Jun 2006 8:42 :: nikhilele :: Replies: 5 :: Views: 147
new user
have no experince. could any body please tell me how to start and any guide lines or advises. i hade a look in the market and found that the available parts are 8052, 8085, 80c31,89c55, 89c51, 89c52, 89c2051 and 8751. i ha......
Microcontrollers :: 18 Jun 2006 3:48 :: TechToys :: Replies: 1 :: Views: 150
digital clock and temperature meter.
dear all,i would like to make a digital clock on atmel 2051 using rtc (philips) along with lm-35 to show the temperature as well as clock time. but the ciruit should be simple. if any person could help in this regards.regards....
Microcontrollers :: 12 Jun 2006 12:19 :: deepu_ttc :: Replies: 10 :: Views: 1641
crystal oscillator of 89c2051
hello friends!i have connected vcc and gnd to µc 89c2051, connected power on reset ckt (10µf & 8.2k resistor)as well as the crystal with 33pf capacitor (as per the datasheet)but still i m not getting the output from crystal (i.e. any waveform on the ...
Microcontrollers :: 09 Jun 2006 18:51 :: erodeboy :: Replies: 2 :: Views: 183
ir switch using 89c2051
i want to transmitt a ir code and recieve it through the same microcontroller.just buy sending and recievin a simple pulse is not enough the switch get triggered buy the other remotes.can we do transmitting of some ir codes and verify the same using ...
Hobby Circuits and Small Projects Problems :: 30 May 2006 9:49 :: nikhilele :: Replies: 2 :: Views: 414
inputs to 89c2051???
hello friends!can u tell me how to give a +5v or 0v as a input to 89c2051?i want information on internal pull up facility i am not getting what is meant by pull up?thanks added after 1 hours 48 minutes: input is meant as to the port pins of port1 & p...
Microcontrollers :: 20 May 2006 17:43 :: Davood Amerion :: Replies: 2 :: Views: 171
8051 assembly code interprating
can anyone please explain what are these codes all about in every single line?? thanks; fet@89c5x integrated development environment (assembly code) org 0000h jmp main org 000bh jmp t0isr org 0023h jmp sisr org 0030h mov r0, #12 ; motor speed on tim...
Microcontrollers :: 03 May 2006 13:26 :: novschopin :: Replies: 27 :: Views: 645
programmer for the at89c52
has anyone tried the programmer developed by shiao at this linkhttp://www.kmitl.ac.th/~kswichit/shiao/prog.htmi am planning to build this. am i taking the right decision or is there something simpler and better ?tia...
Microcontrollers :: 01 May 2006 8:45 :: syrax :: Replies: 46 :: Views: 10751
lock bits of 89c51
can any body tell me how lock bits in 89c51 worksand how to break themthanx in advance...
Microcontrollers :: 25 Apr 2006 13:04 :: IanP :: Replies: 5 :: Views: 1338
use nokia 3310 lcd with at90s2313
hy!is it possible to use the nokia 3310 phones lcd display with atmel 90s2313???...
Microcontrollers :: 21 Apr 2006 9:02 :: gauravsarode :: Replies: 7 :: Views: 8208
how to build modem for only send and receive the msg
helloi want to build the modem for only send and receive msg.. and the modem can connet to microcontroller and the vb.can some one help me..i my country the modem is very expensive..if i build the modem i can save my money for another project..if my ...
Microcontrollers :: 06 Apr 2006 17:45 :: acus :: Replies: 5 :: Views: 369
[need help] digital clock using 89c51
i designed a digital clock using keil c for 89c51. i planned to use 74ls47 for each display and programmed and now i planned to reduce the circuit such that i connect all the 7-segment display parallely in a single port and refreshing it.when i progr...
Microcontrollers :: 15 Mar 2006 20:11 :: silvio :: Replies: 11 :: Views: 1797
tempeture reader.
dear allcan any one help me in making a simplest temperature reader(weather) and show on 7 seg displayby using atmel 89c2051 and lm 35. plz help me in sending asm or suggest.regards...
Microcontrollers :: 06 Mar 2006 8:11 :: deb_mallik :: Replies: 5 :: Views: 552
help program 89c2051 to control motor speed
can anyone here please tell me how to write the code of 89c2051 to control the speed of the motor? how to write the code for pwm? thanks. below is my schematic...
PC Programming and Interfacing :: 01 Mar 2006 8:03 :: chuchinh :: Replies: 1 :: Views: 291
help motor speed control using 89c2051
can anyone here please tell me how to write the full code of 89c2051 to control the speed of the motor? how to write the code for pwm? thanks.motor forward when p3.4 and p3.5 on, p3.3 and p3.7 off.motor reverse when p3.3 and p3.7 on, p3.4 and p3.5 of...
Microcontrollers :: 01 Mar 2006 3:55 :: IanP :: Replies: 1 :: Views: 276
automatic control and display of room temperature
hello every one and i hope they all ok could u help me a temperature sensor is to be interfaced with a pc and an output signal is to control the flow of hot air into the room. a high level language is to be used to provide the control algorithm to m...
Microcontrollers :: 10 Feb 2006 15:17 :: rituparnasaikia :: Replies: 2 :: Views: 441
programmer 89c2051
its a programmer of 89c2051by c...
Microcontrollers :: 05 Feb 2006 13:09 :: tiksh :: Replies: 0 :: Views: 237
89c2051...a lookuptable in sdccc or keilc
.. 89c2051 has 2k code mem (onchip rom) i want ,say a sin() lookuptable of 0xff height.. 1)code unsigned char sintable[0x100]; //doesnt work says u cant modify lvalue 2)tried xdata in place of it compiles fine.. but it is meaningless though.. (o...
Microcontrollers :: 04 Feb 2006 19:24 :: jan noha :: Replies: 2 :: Views: 267
avr rc5 receving and transmitting.
hai,, iam using avr8535 with 3.6864mhz crystal. how can decode the rc5 code in c.any ready code avilable.thanks...
Microcontrollers :: 02 Feb 2006 11:52 :: Picstudent :: Replies: 4 :: Views: 5340
programmer ckt for 8051/52
hey guysi wanted to know if neone has a simple 8051/52 programmer cktthe ones i found through search engines seem to be quite complicatedif neone has ne simple one which can be done easily then pls post it...
Microcontrollers :: 31 Jan 2006 16:02 :: tiksh :: Replies: 3 :: Views: 336
difference in atmel 89c51 and 89c52
hican anybody explain the difference in atmel 8o51 series -89c51 and 89c52 which may affect coding if the microntroller is changed and in what respect will that affect.thanks...
Microcontrollers :: 29 Jan 2006 1:00 :: silvio :: Replies: 9 :: Views: 4137
at89c2051 programmer
anyone has a simple programmer schematic for at89c2051 on paralell port?...
Microcontrollers :: 18 Jan 2006 23:28 :: josip :: Replies: 40 :: Views: 15798
frequency meter function control?
hi,i have a circuit for i/n/t/e/r/s/i/l 7216a frequency counter. however the gate and range selection is done via rotary switches. i need a circuit to do all this switching digitally with two momentry switches with leds indication of gate time (0.1s,...
Hobby Circuits and Small Projects Problems :: 24 Dec 2005 18:34 :: hadihf :: Replies: 5 :: Views: 567
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