Skip to main content

Traffic Light with Mblock

 We will make a traffic light application with the Mblock program. Before moving on to the codes, the list of materials we will need in our traffic light circuit:

 1-Arduino Uno

2-BreadBoard

3-3 LEDs

4-3 pieces of 220Ω Resistor

5-Jumper Cables

We need supplies.

 

Note: We need LEDs that give red, yellow, green light. If you are going to use white colored leds, you need to identify the leds that give the above 3 colors one by one before the application.

We add 220 ohm resistors to the long leg of the LEDs we add to our breadboard. We connect one leg of the resistors with a jumper cable to the digital pins 2,3,4 on our ardunio uno material (I connected the green led to the digital pin 2, the yellow led to the number 3, and the red led to the number 4). We connect it to the GND (negative) terminal. The circuit diagram is given below.

Traffic Light with Mblock

Now let's come to our codes in mBlock;

Traffic Light with Mblock


In the Mblock program, we add the Arduino program starter code from the Robots menu. After adding the code of repeat continuously from the control menu, we add the code to whichever digital pin we connected our led to from the "Robots menu... Set pin high, set digital pin no. 3 low, set digital pin no. 4 low, we only light up our red led, our other 2 leds do not light. With the 10 second wait code we added in this event control menu, the red light will turn on for 10 seconds, the green and yellow leds will not light up. After 10 seconds, we make the digital pins 4 and 3 high so that the red and yellow leds light up together for 2 seconds. Then, by making the digital pin 2 high, we make the green led light up for 5 seconds. We make the other 2 leds go down by making them low. The last operation is The yellow and green leds are turned on together, after that, the operations return to the beginning with the repeat code and this event will be repeated continuously. In order for us to run these codes, after connecting our arduino board and circuit to the computer with a usb cable, we first select the Serial port from the Connect menu, let's choose the port to which our arduino board is connected from there. By pressing the Upload to Arduino button, we send the codes we wrote to our Arduino board and upload them. Thus, our program becomes ready to run.


To download the source code of the program CLICK HERE

 

 Similar Topics

For All Scratch Examples CLICK HERE

For Mblock With Arduino Examples CLICK HERE




Labels:

Comments

Post a Comment

Popular posts from this blog

How to Make Countdown a Maze Game on Scratch

  We will make a countdown maze game example with Scratch. For the countdown maze game example we will make with Scratch, we upload the maze picture we downloaded to our computer from the scene section to the scratch program. Then we select the object that we will move in the maze section from the choose a sprite section and add it to our scene. We bring the object to be moved to the red point, which is the starting point. First of all, we create a variable named Duration to calculate the elapsed time in the maze from the "Variables" menu When you click the green flag, set the duration variable to 40. Our goal is to get the ball to the finish line in 40 seconds. If our ball object to move, we give the x and y coordinates to go to the red starting point. Our object will not move only once. First of all, we add the "Forever" code from the "Control" menu so that it moves every time we press the arrow key. Now it's time to check which direction key is pres...
Post a Comment
Read more

Blinking LED with Mblock and Arduino

  We will blink the led with the mblock program. The list of materials that will be used in our led circuit before moving on to the codes of the application we will make with the Mblock program: 1-Arduino Uno 2-BreadBoard 3-LED 4-220Ω Resistor 5-Jumper Cables We need supplies. We add a 220 ohm resistor to the long leg of the Led that we added to our breadboard. We connect one leg of the resistor with a jumper cable to the digital pin 8 of our ardunio uno material (You can connect your jumper cable to any digital pin you want between 2-13). The circuit diagram is below. Now let's come to our codes in mBlock; In the Mblock program, we add the Arduino program starter code from the Robots menu. After adding the forever from the control menu, we add the code to whichever digital pin we connected our led to the inside of the "Robots menu ... we add the code to make the pin low. We write 8 because I connect it to digital pin 8. We do not light our led with the code of s...
Post a Comment
Read more