Arduino(ing) 101

Task:

For this task we are demand to explore with arduino components, the aim of this is to understand how electronic components work and how to code (programming).

Process:

Everytime you are about to explore new techniques and new proyects, remember to use references, it’s ok to guide yourself, in this case i look for references on www.instructables.com and also look for some videos on Youtube to understand a little bit of arduino coding.

PLUG IN STUFF

Materials:

  • Arduino Nano/ UNO
  • HM-10 Bluetooth
  • 17 jumper wires
  • Brea Board
  • 5 Mini Vibromotors

Step 1:

Plug your arduino and Bluetooth in the middle of the board , try to place them in the same line, so they have a place where these components remain steady.

*we recomend after this step you proceed with coding*

Step 2

Using a simple code you can be able to program your arduino board, with this you can have control of the in puts (information given by bluetooth) and of the out puts (vibro/motors).

Open arduino interface and write the code:

#include <Servo.h>                

int izqA = 5;

int izqB = 6;

int derA = 9;

int derB = 10;

int vel = 255;            // Speed of the motors (0-255)

int estado = ‘f’;         // start stop

void setup()  {

 Serial.begin(9600);    // starts comunication with bluetooth

 pinMode(derA, OUTPUT);

 pinMode(derB, OUTPUT);

 pinMode(izqA, OUTPUT);

 pinMode(izqB, OUTPUT);

}

void loop()  {

 if(Serial.available()>0){        // bluetooth storage

   estado = Serial.read();

 }

 if(estado==’a’){           // Front

   analogWrite(derB, vel);     

   analogWrite(izqB, 0);

   analogWrite(derA, 0);  

   analogWrite(izqA, 0);       

 }

 if(estado==’b’){          // Left

   analogWrite(derB, 0);     

   analogWrite(izqB, 0);

   analogWrite(derA, 0);  

   analogWrite(izqA, vel);      

 }

 if(estado==’c’){         // Stop

   analogWrite(derB, vel);     

   analogWrite(izqB, vel);

   analogWrite(derA, vel);    

   analogWrite(izqA, vel);

 }

 if(estado==’d’){          // Right

   analogWrite(derB, 0);     

   analogWrite(izqB, 0);

   analogWrite(izqA, 0);

   analogWrite(derA, vel);  

 }

 if(estado==’e’){          // Back

   analogWrite(derA, 0);    

   analogWrite(izqA, 0);

   analogWrite(derB, 0);  

   analogWrite(izqB, vel);      

 }

 if(estado==’f’){          // OFF

   analogWrite(derA, 0);    

   analogWrite(izqA, 0);

   analogWrite(derB, 0);  

   analogWrite(izqB, 0);      

 }

}

Step 3

After coding and compiling the program, we can start to assemble all our components, this part iis really simple:

  • select 5 pins on you arduino board (pin 5, pin, 6, pin7…) plug one wire to each of these pins
  • connect each wire (pin wires) to the positve part of the micro motors (red cable)
  • Connect different wires to the negative part of the vibro motors (blue cable) and connect them to the negative channel of the bread board.
  • Connect bluetooth to arduino, this step is kind of tricky, specially because you need to connect Bluetooth after you progam, if not you are not going to be able to compile the program. Bluetooth has four components, VCC, GND, TXD, RXD. Connections are really simple, VCC goes to 5v (arduino board), GND goes to GND, TXD goes to RXD (Arduino B.) and finally RXD goes to TXD (Arduino B).


Step 4

Download any bluetooth controler from the play store or if you want you can make your own.

Step 5

Plug in arduino to a source of power and enjoy sending vbrations.

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