39 Threads found on edaboard.com: Interfacing max232 With 8051
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"MICROCONTROLLER interfacing with RS-232 STANDARD DEVICES"
Microcontrollers :: 08.05.2007 06:24 :: IanP :: Replies: 2 :: Views: 2516
wish you a very happy new year to all of you:D
i am doing a hobby project of sending sms through Nokia E71 with 8051 using AT command.I successfully able to send sms from the mobile through hyperterminal or trying to make a call (ATD 98541*****).The same commands were also successfully sent from 8051 to hyperterminal.But when I (...)
Microcontrollers :: 05.01.2010 05:58 :: ankur1403 :: Replies: 2 :: Views: 1449
i want the schematic and code for the interfacing of rf module A315 do we need to interface it through max232
Hobby Circuits and Small Projects Problems :: 07.11.2011 07:04 :: akshay985 :: Replies: 8 :: Views: 1597
Hi i am using R30x module. it is a finger print module, communication is RS 232. how to start the programming, please guide me..
first i am trying to interface finger print module R30x with 8051. first i am trying to interface with PC.
but it is not showing any thing on my hyper terminal. even i can not write any thing on my hyper (...)
Power Electronics :: 28.10.2012 23:59 :: torana :: Replies: 8 :: Views: 500
Dear friends i have just use tws and rws pair for wireless communication between two 8051 microcontrollers.
when i communuicate them with wire, work fine...
but problem arise when i used the wirless modules,it does not seems that RWS data pin is not able to drive the Rx pin of 8051,because i have tested that the transmitter is transmitt
RF, Microwave, Antennas and Optics :: 08.12.2012 03:50 :: RK_ELECTRONICSWORLD :: Replies: 0 :: Views: 282
If you are new to serial port interfacing and new to 8051 ,and want to learn these two for interfacing only. Then the best choice for you is "Serial port complete " By Jon Axelson .
Have you checked it out ? It has circuit as well as explaination of what you are looking for.
You can download it from the forum (e version of the book ). (...)
Hobby Circuits and Small Projects Problems :: 03.04.2005 15:16 :: truebs :: Replies: 4 :: Views: 820
Can any one send me circuits and programmiing samples for intefacing of
1)Atmel 89c2051 with Max 233
2)Atmel 89c2051 with ADC 0804
Thanks in advance.
if you simply want the connections between 89c2051 and max232/33
the follow this links ::
Microcontrollers :: 09.04.2008 06:27 :: H_D_R :: Replies: 3 :: Views: 1256
after interfacing 8051 with PC; how can i view the results
Microcontrollers :: 22.04.2009 02:42 :: nitheesh :: Replies: 5 :: Views: 1358
i need help interfacing gps garmin 35 hvs with micocontroller 8051..if u could provide a schematic diagram i will be thankful..
Microcontrollers :: 12.04.2010 18:40 :: moody97268 :: Replies: 2 :: Views: 1061
its just connecting to serial port and configuring the bauud rate properly. You dont need any interfacing as the module and your 8051 board will have MAX 232 in it. The zigbee module should have a max232. check if it is there or not. If it is there then directly you can connect.
Microcontrollers :: 21.12.2010 04:58 :: ckshivaram :: Replies: 4 :: Views: 2202
hi,sorry for my English
i want to interface gsm modem with 8051 using serial communication , but first i want to know if (GPRS/GSM-Modem
SINAUT MD720-3) must connect first to rs232 circuit or it has already inside it a rs232 circuit because on websites i read that not all modems needs to rs232 circuit and , please help me to know how to connect i
Microcontrollers :: 20.05.2011 14:21 :: hassan ali :: Replies: 3 :: Views: 1683
sir i haven't interface a PC to a microcontroller before this is my first time.....i want to send data from my computer to at89c52....how do i do max232 with RS232 cable going to work or i can make it work with other connections(diode 1N4148 and transistor QCS9014.......i read this connection somewhere i havent tried this yet) as well????
Microcontrollers :: 20.10.2011 01:04 :: sujana gurun :: Replies: 5 :: Views: 739
anyone, please give me CIRCUIT AND CODE OF 8051 USING IR, and also a circuit of db25 connection, which is for interfacing with computer,
Microcontrollers :: 25.12.2011 00:54 :: zulfiqq :: Replies: 1 :: Views: 1552
Thanks for your advice but I've completed my project a month ago ;-)
i am trying to interface fingerprint module R30x with 8051. first i am trying to interface with PC.
but it is not showing any thing on my hyper terminal. even i can not write any thing on my hyper terminal (after connecting fingerprint
Electronic Elementary Questions :: 25.08.2012 00:42 :: torana :: Replies: 3 :: Views: 1484
i am interfacing 8051 to xbee (tharang f4-it is a module from NSK )using max232 ic. when i connected the xbee to PC it works properly at 9600 .
I programmed 8051 to sent hello word at 9600 .when i connected 8051 to pc at9600 it works fine.but when i connected to pc through (...)
Microcontrollers :: 25.01.2013 13:38 :: monna :: Replies: 4 :: Views: 845
Microcontrollers :: 04.02.2013 04:49 :: irfan ahmad :: Replies: 14 :: Views: 593
The design may or may not require the use of max232 transceivers, depending on whether the GSM/GPRS module provides a TTL UART or RS-232 interface.
interfacing GSM Module with 8051 microcontroller (AT89C51) without using PC
Microcontrollers :: 05.08.2013 07:02 :: bigdogguru :: Replies: 1 :: Views: 380
OK, "Serial Port Complete" book can help your problem. In this book, interfacing with 8051 and other microcontroller are included.
PC Programming and Interfacing :: 15.08.2006 06:04 :: merlion :: Replies: 4 :: Views: 1508
if you can use the DPDT Relay for the switching the interface .......... i also did same when i am interfacing the GPS and the GSM modem
coz when i need one device at a time ...... it is nice solution when u wnat to send data to only one device at a time
Microcontrollers :: 06.01.2007 08:01 :: ashad :: Replies: 2 :: Views: 2184
What modem are you talking about? Is it Benq m22 or m23? They are almost the same.
I have used this modem before many times. You do not need to convert any signal if your going to use it with a microcontroller. You only need max232 level converter if your going to connect it to a computer. I recommend you to try to communicate using a computer f
Microcontrollers :: 19.02.2007 20:19 :: nomad13 :: Replies: 12 :: Views: 2833
You have mentioned that while connecting to PC, you have connected the phone to the USB port of PC, which means the phone is interfacing to PC using USB signals, it does not matter whether the level is TTL or not, you need to emulate a USB host in 8051 for it to work with your phone. Apart from just the levels, it means a lot of (...)
Microcontrollers :: 15.03.2008 15:33 :: laktronics :: Replies: 23 :: Views: 4007
I m using 89c52 to interface it with sonyericson T290i mobile... i tested mobile at is working. and supports AT commands.
i know that max232 IC will be used in between mobile and microcontroller... but i dont know what connections should be make in DB9 connector of mobile with max232.
what connections should be make in DB9
Microcontrollers :: 24.09.2008 14:03 :: Naveed_eng :: Replies: 2 :: Views: 1196
How can i interface max232 interfacing with P89v51rd2
It's typical DB-9 - max232 - 8051-derivative configuaration ..
Microcontrollers :: 15.04.2010 02:48 :: IanP :: Replies: 1 :: Views: 1464
1) as for interfacing the 8051 using RS232 check any 8051 related book(mazadi could be a good one)/ or just google it out.
2) For controlling the realys why do u need NE555 ? Whats the purpose you are trying to achive? I guess you are getting the basics wrong!!!!
Microcontrollers :: 08.09.2010 12:36 :: asimov :: Replies: 9 :: Views: 2088
i m interfacing 8051 with a max232 to VTerminal program is writen in keil c only a ? appears when i m sending the data to the VTerminal plz help me with right schematic and program
Microcontrollers :: 31.05.2011 21:24 :: akshay985 :: Replies: 3 :: Views: 1574
actually i m interfacing rf module to 8051 without max232 so will the transmitter and reciever work without it i dont know plz help
Hobby Circuits and Small Projects Problems :: 07.11.2011 06:46 :: akshay985 :: Replies: 6 :: Views: 1281
Please see my example for 8051 interfacing to PC serial port . It is working example with 9600 baud rate. Hyperterminal file is include in whole project zip file. For more examples see project page of site
Microcontrollers :: 31.08.2012 18:07 :: Rashid_Mehmood :: Replies: 18 :: Views: 4010
Interface GSM Module with 8051 Microcontroller : Project with Circuit & C code
Interface GSM with 8051 Microcontroller (
Microcontrollers :: 10.02.2012 08:30 :: ud23 :: Replies: 2 :: Views: 4600
I don't see any use of max232 or MAX3232... there is no need to convert the signal to TTL logic as both work on CMOS logic.
Simple interfacing RX(of GPS)->Tx(of MCU) and Tx(of GPS)->Rx(of MCU) should work, won't it???
Microcontrollers :: 18.07.2012 08:26 :: dean_winchester :: Replies: 11 :: Views: 1268
I am interfacing a GSM Module with the help of a AT89S52 Microcontroller. I am writing the program on C and compiling using Keil.
Please could anyone tell me how do I generate a call through the MC using AT commands and how should I enter it in the C program.
Also please could you tell me about the RS232 connections.
Any help on th
Microcontrollers :: 14.04.2013 12:23 :: Prixy Patil :: Replies: 1 :: Views: 514
You can use MCU 89xx Programmer, with serial I/F or Parallel I/F to send .hex file
Some resource available for free and commercial.
for example link site:
And reference for interfacing serial/parallel
Microcontrollers :: 19.01.2007 00:52 :: dafahmi :: Replies: 3 :: Views: 1310
I would like to know about interfacing 8051 microcontroller into PC via RS-232 connector, can anyone tell me how i can do it,
what are the steps i can take ..
Microcontrollers :: 26.08.2007 06:53 :: dayal :: Replies: 3 :: Views: 1134
yup jitu is right u have to use max232 IC for interfacing micro controller to the PC... using hyper terminal is very simple, check this link for hyper terminal settings
Microcontrollers :: 13.01.2009 12:58 :: amol_shah :: Replies: 4 :: Views: 1376
Dear All My friends
Very good VB interfacing and micro controller programmer book
Microcontrollers :: 17.09.2011 04:02 :: Medtronic :: Replies: 19 :: Views: 26253
can anyone plz help me , i want to make my very first project regarding microcontrollers...i want to switch on/off led connected to p0.0 port of at89s52, through key: 'A' . i have used here max232 for interfacing at89s52 with the plz anyone , send its source code in assembly language only????
Microcontrollers :: 04.10.2010 13:14 :: bhanot.manik90 :: Replies: 4 :: Views: 2142
you may first study how to make a simple program in your device before you can do interfacing..
we will try to help you in the interfacing if you have problems..
PC Programming and Interfacing :: 08.07.2011 05:26 :: romel_emperado :: Replies: 14 :: Views: 2642
i want a circuit diagram through which i could read sms from a gsm module using a project is "controlling home appliances using sms" --->wanted a circuit diagram interfacing gsm module sim300 and a microcontroller............. urgently plzzzzz someone help me out.
Hobby Circuits and Small Projects Problems :: 04.11.2011 21:47 :: ARIF HASAN :: Replies: 2 :: Views: 3647
how can we help you if not know what type of modem you have?
here is some example:
instead of classic 8051 series to C8051F330 is very litle difference.....
use datasheet of F330 and datasheet of modem and all will be clear very quick!
Microcontrollers :: 05.07.2012 02:19 :: js :: Replies: 2 :: Views: 557
Microcontrollers :: 04.05.2013 14:04 :: aameer :: Replies: 34 :: Views: 1610