Basic Lego Walker

















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Lego Walker controlled by android app via Bluetooth

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This is a Lego robot with a geared Stepper Motor 28BYJ-48 5V with ULN2003 driver board which is controlled by a Bluetooth using an android app that the author has developed. /*  Stepper Motor controlled by android app via bluetooth  This sketch controls a geared stepper motor wirelessly using a phone  The motor will revolve one revolution forward when green button is pressed.  The motor will revolve one revolution backward when red button is pressed.  The motor is attached to digital pins 8 - 11.  An indicator red led is attached to pin 13. */ #include <SoftwareSerial.h> SoftwareSerial BTserial(2,3); int i=0; int m=4 void setup() {                 pinMode(8, OUTPUT);   pinMode(9, OUTPUT);   pinMode(10, OUTPUT);   pinMode(11, OUTPUT);   pinMode(13, OUTPUT);  } void loop(){ if (BTserial.available()) data=BTserial.read()...
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Lego Walker stepper motor with Arduino

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Geared Stepper Motor 28BYJ-48  5V  with  ULN2003 driver board /*  Stepper Motor Test  This sketch test a geared stepper motor.  The motor will revolve one revolution forward then backward.  The motor is attached to digital pins 8 - 11.  */ int i=0; int m=4 void setup() {                 pinMode(8, OUTPUT);   pinMode(9, OUTPUT);   pinMode(10, OUTPUT);   pinMode(11, OUTPUT); } void loop() {       for(i=0;i<512;i++)      {       forward();       }        delay(1000);                    for(i=0;i<512;i++)      {       backward();       }        delay(1000);...
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