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The Flexible Sensor Hand Controller

The Flexible Sensor Hand Controller makes it possible to control your projects with your finger movements via wireless communication.

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The Flexible Sensor Hand Controller

Things used in this project

Hardware components

Adafruit Long Flex sensor
×5
Arduino Nano V3
×1
NRF24L01 Transceiver
×1
10uF Capacitor
×1
10K Resistor
×1
Header Male
×1
Header Female
×1
Power Jack 5.5MM
×1
On/Off Switch
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Soldering Iron Kit

Story

Read more

Schematics

Flex Sensor Transmitter Breadboard Circuit

Code

Transmitter - Flex Sensor Controller

Arduino
#include <SPI.h>                      //the communication interface with the modem
#include "RF24.h"                     //the library which helps us to control the radio modem

//define the data pins
int flexPin2 = A2;
int flexPin3 = A3;
int flexPin4 = A4;

//define variable values
int flexVal2;
int flexVal3;
int flexVal4;

int data[3];

RF24 radio(10,9);                     //10 and 9 are a digital pin numbers to which signals CE and CSN are connected.
                                      
const uint64_t pipe = 0xE8E8F0F0E1LL; //the address of the modem, that will receive data from Arduino.


void setup(void){
  Serial.begin(9600);
  radio.begin();                      //it activates the modem.
  radio.openWritingPipe(pipe);        //sets the address of the receiver to which the program will send data.
}

void loop(){
  //Send signal data
  flexVal2 = analogRead(flexPin2);
  flexVal3 = analogRead(flexPin3);
  flexVal4 = analogRead(flexPin4);
  
  data[0] = flexVal2;
  data[1] = flexVal3;
  data[2] = flexVal4;
  
  radio.write(data, sizeof(data));
  
}

Receiver - Motor Control

Arduino
#include <SPI.h>      //the communication interface with the modem
#include "RF24.h"     //the library which helps us to control the radio modem (nRF24L)

//Motor A
const int RightMotorForward = 3;    // IN1
const int RightMotorBackward = 2;   // IN2
//Motor B
const int LeftMotorForward = 5;     // IN3
const int LeftMotorBackward = 4;    // IN4


RF24 radio(10,9);     /*This object represents a modem connected to the Arduino. 
                      Arguments 10 and 9 are a digital pin numbers to which signals 
                      CE and CSN are connected.*/

const uint64_t pipe = 0xE8E8F0F0E1LL; //the address of the modem,that will receive data from the Arduino.

int data[3];


void setup(){
  Serial.begin(9600);
  pinMode(RightMotorForward, OUTPUT);
  pinMode(LeftMotorForward, OUTPUT);
  pinMode(LeftMotorBackward, OUTPUT);
  pinMode(RightMotorBackward, OUTPUT);
  
  radio.begin();                    //it activates the modem.
  radio.openReadingPipe(1, pipe);   //determines the address of our modem which receive data.
  radio.startListening();           //enable receiving data via modem
  }

void loop(){
  if(radio.available()){
    radio.read(data, sizeof(data));
    
    
    if(data[0] > 750){
    digitalWrite(RightMotorForward, HIGH);
    digitalWrite(RightMotorBackward, LOW);
    digitalWrite(LeftMotorForward, HIGH);
    digitalWrite(LeftMotorBackward, LOW);
    Serial.println("FORWARD");
    }

    if(data[1] > 750){
    digitalWrite(RightMotorForward, LOW);
    digitalWrite(RightMotorBackward, HIGH);
    digitalWrite(LeftMotorForward, LOW);
    digitalWrite(LeftMotorBackward, HIGH);
    Serial.println("BACKWARD");
    }
    
    if(data[2] > 750 ){
    digitalWrite(RightMotorForward, LOW);
    digitalWrite(RightMotorBackward, HIGH);
    digitalWrite(LeftMotorForward, HIGH);
    digitalWrite(LeftMotorBackward, LOW);
    Serial.println("TURN");
    }

    if(data[0] < 750 && data[1] < 750 && data[2] < 750 ){
    digitalWrite(RightMotorForward, LOW);
    digitalWrite(RightMotorBackward, LOW);
    digitalWrite(LeftMotorForward, LOW);
    digitalWrite(LeftMotorBackward, LOW);
    Serial.println("STOP");
    }

  }
}

Credits

Maker 101

Maker 101

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