The Unique Microcontroller Projects Blog

By Sony Sodikin http://www.sodikinsony.blogspot.com/ This project turns on the LEDs connected to port 0 of the microcontroller in sequence, making the led bouncing back and forth from low speed to high speed. The process is repeated indefinitely with variable delay time. Circuit Diagram Program Listing ;****************************************************************** ;* Title : Bouncing LED * ;* Author : Sony Sodikin * ;* : http://www.sodikinsony.blogspot.com * ;* Date : May 28,2008 * ;* Processor : AT89C51/AT89S51 (AT89CXXXX/AT89SXXXX) * ;****************************************************************** ...

By Sony Sodikin http://www.sodikinsony.blogspot.com/ This project turns on the LEDs connected to port 0 of the microcontroller in sequence such that first only a led are off, bouncing back and forth, then only a led are on bouncing back and forth. The process is repeated indefinitely with 1 second delay between each output pattern. Circuit Diagram Program Listing /*********************************************************** Title : variation blinking led Author : Sony Sodikin : http://www.sodikinsony.blogspot.com Date : September,09,2008 Processor : AT89C51 ***********************************************************/ #include void delay(void) { int i; for(i=-32768 ; i } void main(void) { while(1) { int j; for(j = 1 ; j {P0 = j; ...

By Sony Sodikin http://www.sodikinsony.blogspot.com/ This project turns on the LEDs connected to port 0 of the microcontroller in sequence, resulting in a chasing LED effect to right. The data is displayed with about 1 second delay between each output pattern. Circuit Diagram Program Listing /*********************************************************** Title : led chasing to right Author : Sony Sodikin : http://www.sodikinsony.blogspot.com Date : September,09,2008 Processor : AT89C51 ***********************************************************/ #include void delay(void) { int i; for(i=-32768 ; i } void main(void) { while(1) { int j; for(j = 128; j>1 ; j-=j/2) {P0 = ~j; delay(); } } ...

By Sony Sodikin http://www.sodikinsony.blogspot.com/ This project turns on the LEDs connected to port 0 of the microcontroller in sequence, resulting in a chasing LED effect to left. The data is displayed with about 1 second delay between each output pattern. Circuit Diagram Program Listing /*********************************************************** Title : led chasing to left Author : Sony Sodikin : http://www.sodikinsony.blogspot.com Date : September,09,2008 Processor : AT89C51 ***********************************************************/ #include void delay(void) { int i; for(i=-32768 ; i } void main (void) { while(1) { int j; for(j = 1; j {P0 = ~j; delay(); } } ...

By Sony Sodikin http://www.sodikinsony.blogspot.com/ This project counts down in binary and displays the result on eight LEDs connected to port 0 of the microcontroller. The program written in SDCC is required to decrement a value and then output to port 0 of the microcontroller. The data is displayed with about 1 second delay between each output. Circuit Diagram Program Listing /*********************************************************** Title : led binary counter2 Author : Sony Sodikin : http://www.sodikinsony.blogspot.com Date : September,09,2008 Processor : AT89C51 ***********************************************************/ #include void delay(void) { int i; for(i=-32768 ; i } void main(void) { while(1) { int j; for(j = 255 ; j >= 0 ; j--) ...

By Sony Sodikin http://www.sodikinsony.blogspot.com/ This project counts up in binary and displays the result on eight LEDs connected to port 0 of the microcontroller. The program written in SDCC is required to increment a value and then output to port 0 of the microcontroller. The data is displayed with about 1 second delay between each output. Circuit Diagram Program Listing /*********************************************************** Title : led binary counter1 Author : Sony Sodikin : http://www.sodikinsony.blogspot.com Date : September,09,2008 Processor : AT89C51 ***********************************************************/ #include void delay(void) { int i; for(i=-32768 ; i } void main(void) { while(1) { int j; for(j = 0 ; j {P0 ...

By Sony Sodikin http://www.sodikinsony.blogspot.com/ This project schematic is same with CW-CCW-RUN-STOP controls with 4 LEDs project schematic, but at this project, you are possible to change CW/CCW button have pressed as you want before RUN button to be-on (motor isbutton run). Example: You have pressed CW button, but you want By the motor run counter clockwise. So, you just press CCW button and then press RUN . Hardware Software Software flow chart Source code file in Full Step Mode ;**************************************************************** ;* Title : CW-CCW-RUN-STOP controls with 4 LEDs (2)* ;* in Full Step Mode * ;* Author : Sony Sodikin * ;* Last updated : 04. 03.14 * ;* Target : AT89C51/AT89S51 (AT89CXXXX/AT89SXXXX) * ;***********************************...