Stuck on . Elegoo. Most Comoplete Starter Kit . Lesson 29 DC Motors wont work

Other Hardware Motors, Mechanics, Power and CNC
1

Have the Elegoo Most Complete Starter Kit.

Stuck on Lesson 29 DC Motors.

Appears to be wired up right

Have plugged in the adapter power to the power board, the led on the power adapter is lit but not the LED on the power board.

Positive and negative lines to the board and motor driver chip apper right, the jumper cable on the power board looks set to 5v.

The Uno 3 is connected with 3 wire, it has leds lit, have up loaded the code ore than ones... nothgin dead as a dodo but the messages of what the motro is supposed to be doing are appearign in the serioal monitor... Will try and post the manual next post..

help Please

2 
//www.elegoo.com
//2016.12.12

/************************
Exercise the motor using
the L293D chip
************************/

#define ENABLE 5
#define DIRA 3
#define DIRB 4

int i;
 
void setup() {
  //---set pin direction
  pinMode(ENABLE,OUTPUT);
  pinMode(DIRA,OUTPUT);
  pinMode(DIRB,OUTPUT);
  Serial.begin(9600);
}

void loop() {
  //---back and forth example
    Serial.println("One way, then reverse");
    digitalWrite(ENABLE,HIGH); // enable on
    for (i=0;i<5;i++) {
    digitalWrite(DIRA,HIGH); //one way
    digitalWrite(DIRB,LOW);
    delay(500);
    digitalWrite(DIRA,LOW);  //reverse
    digitalWrite(DIRB,HIGH);
    delay(500);
  }
  digitalWrite(ENABLE,LOW); // disable
  delay(2000);

  Serial.println("fast Slow example");
  //---fast/slow stop example
  digitalWrite(ENABLE,HIGH); //enable on
  digitalWrite(DIRA,HIGH); //one way
  digitalWrite(DIRB,LOW);
  delay(3000);
  digitalWrite(ENABLE,LOW); //slow stop
  delay(1000);
  digitalWrite(ENABLE,HIGH); //enable on
  digitalWrite(DIRA,LOW); //one way
  digitalWrite(DIRB,HIGH);
  delay(3000);
  digitalWrite(DIRA,LOW); //fast stop
  delay(2000);

  Serial.println("PWM full then slow");
  //---PWM example, full speed then slow
  analogWrite(ENABLE,255); //enable on
  digitalWrite(DIRA,HIGH); //one way
  digitalWrite(DIRB,LOW);
  delay(2000);
  analogWrite(ENABLE,180); //half speed
  delay(2000);
  analogWrite(ENABLE,128); //half speed
  delay(2000);
  analogWrite(ENABLE,50); //half speed
  delay(2000);
  analogWrite(ENABLE,128); //half speed
  delay(2000);
  analogWrite(ENABLE,180); //half speed
  delay(2000);
  analogWrite(ENABLE,255); //half speed
  delay(2000);
  digitalWrite(ENABLE,LOW); //all done
  delay(10000);
}
3

https://www.elegoo.com/download/

can get lesson here

4

Hello,

Positive and negative lines to the board and motor driver chip apper right, the jumper cable on the power board looks set to 5v.

Can you share the wiring picture? and did you use external power supply for the motor?

5

Used external power source the transformer plug that comes with it, its led light is on, the arduino uno board attached to the computer via USB is on and lit, but the power board on the bread board is not.

You can find the instruction manula via the above link clicking the most complete set. I also screen shot the whole lesson and attached it inc the wiring diagram

Eleego lesson 29.jpg
Eleego lesson 29.jpg827×8072 1.18 MB

6

On the last picture, there is no signal return path (ground wire) from breadboard to Arduino GND.

7

thought that was becuase it was supposed to go through the power board, seemed to get success when flipped the L293D around but could not get it to slow down