need urgent help please about burning the 8051 Forum -> General help Guidance and Discussion

Also try with another micro,just in case the one you're using has a bad flash area. Have you ever programmed successfully with the programmer?If no,then you may want to contact your vendor for a replac...

Thanked 1 time Posted by sashijoseph on Wednesday 18 February 2009 - 20:02:57

Finger print attandence system Forum -> Project Help

First look around locally for fingerprint sensors that are available. Typically you would need a module with onboard authentication(relieving your microcontroller of the dirty work) and some kind of se...

Thanked 1 time Posted by sashijoseph on Sunday 15 February 2009 - 23:04:50

How can I...? Forum -> 8051 Discussion Forum

use asm51 attached here for compiling. in your code,remove all these declarations.. CODE: ACC     EQU     E0h                     B &...

Thanked 1 time Posted by sashijoseph on Sunday 15 February 2009 - 03:10:38

Help on tachometer C code Forum -> Project Help

You may use P3.7 in place of P1.1 The P1 of 89c2051 will be used for the lcd's data lines. In the original code P0 is used in whole as a 8bit port,not as individual lines.That's why you don't see any b...

Thanked 1 time Posted by sashijoseph on Sunday 08 February 2009 - 00:54:19

Need Help in Proteus Forum -> General help Guidance and Discussion

@pdi there's a 'hidden pins' tab in the 'edit properties' page(right click on component) which allows you to connect the hidden pins to different nets.

Thanked 1 time Posted by sashijoseph on Saturday 07 February 2009 - 20:27:13

Help on tachometer C code Forum -> Project Help

CODE: ena(){ P2_7 = 1; delay (5); P2_7 = 0; } ini_lcd(){ P1_1 = 0;         P2_7 = 0; //transfering instructions P2_6 = 0; P0 = 56;  //function set ena(); P0 = 56;  ...

Thanked 1 time Posted by sashijoseph on Saturday 07 February 2009 - 05:32:01

p89v51rd2 and at89s51 Forum -> 8051 Discussion Forum

You've omitted those diodes!!! Well then most probably your micro's gone kaput. The pc's serial port uses RS232 voltage levels which will destroy a ttl microcontroller if not for the MAX232 interface,...

Thanked 1 time Posted by sashijoseph on Saturday 07 February 2009 - 05:01:06

digital code lock circuit Forum -> Project Doubts

After 3 wrong tries the user password will get blocked and will be unblocked only by entering the master password.

Thanked 1 time Posted by sashijoseph on Saturday 07 February 2009 - 04:10:14

caller id basics Forum -> Project Doubts

Well you would need to buy a programmer for the microcontroller(89C2051). But a better alternative would be to buy a P89V51RD2 micro(it's code compatible with 89c2051) and build a small circuit around ...

Thanked 1 time Posted by sashijoseph on Saturday 31 January 2009 - 19:27:14

9541.98baud --> 9600baud.. Forum -> 8051 Discussion Forum

Have you tested the atmel's serial connection with a pc or sth to verify that it's working ok? See if you find a 11MHz xtal.That will solve your problem.

Thanked 1 time Posted by sashijoseph on Saturday 24 January 2009 - 09:44:53

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