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Using LDR With Mblock and Arduino


In this application, we will make an LDR application with the Mblock program. LDR; It is a photoresistor that changes value according to the incident light. You can turn the lamp on and off according to the values ​​in the LDR. In this application, we will first learn to read the values ​​in the LDR, then we will flash the led.

Let's come to the circuit elements.

1-Arduino Uno (1 pc)

2-BreadBoard

3-220Ω Resistor(1pcs)

5-LDR(1pcs)

6-Jump Cables

We need supplies.

Our circuit diagram is as follows.

Using LDR With Mblock and Arduino

We connect a 220 ohm resistor to one leg of our LDR. We connect a cable to one leg of the resistor we connected and connect this cable to the 5 volt pin (blue cable) and we connect it to the other free leg of the LDR with a GND (- terminal) cable. Thus, we have prepared our circuit. It's time to write our code.


Mblock and Arduino examples

In the Mblock program, we add the Arduino program starter code from the Robots menu. After adding the repeat code from the control menu, we add our code to write to the serial port inside. In this code, we add the code to read the pin to whichever analog pin we connected our LDR to. We add the code to read the analogue pin from the Robots menu. We write A0 because I connect it to the danalog pin A0. Thus, our LDR will print the light value in the environment to the screen. This event is constantly In order for us to run these codes, after connecting our arduino board and circuit to the computer with a usb cable,


Mblock and Arduino projects

 we first select the Serial port from the Connect menu, let's choose the port to which our arduino board is connected from there. Select the letter case in both send encode mode and recv encode mode. After that, 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

To download the source code of the program CLICK HERE  (This program ise done with mblock 5 version)

Note: You can upload the codes to the arduino uno board by pressing the connect and upload buttons at the bottom of the screen respectively.




In the Mblock program, we add the Arduino uno starts up code from the Events menu. After adding the forever from the control menu, we add the code to write toserial port. In this code add to read analog pin (A) from the pin menu. Then, we add wait code from the control menu. 



Similar Topics

For All Scratch Examples CLICK HERE

For Mblock With Arduino Examples CLICK HERE

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