Where to connect 2 conductivity sensors in a Arduino Uno Board

Projects General Guidance
1

Good Day everyone!

I'm currently working on a Oil Spill cleaning boat using loofa fibers
I'm able to make the code for the movement of the boat (moving forward, backward, left, and right) using an app with my smartphone connected to a bluetooth module connected to my arduino uno

We made 2 conductivity sensors using 2n222 transistors, and now I'm wondering, where should I connect the pins of the sensor

Also, I would like to ask if I should use another motor driver for the working mechanism of the cleaner

Basically, the working principle is that, I'll use 2 dc motors that is connected to a sheet of loofa fibers (oil absorbent material) that will spin like a belt. It will work only if the conductivity sensor is not conducting, due to the prescence of oil on the water

should I connect the another 2 dc motors to the existing motor driver for the movement of the prototype?

image
image1442×1137 103 KB

the diagram for the boat
image
image1151×2048 101 KB

the conductivity sensor (we're planning to use 2 of these)

this code if for the movement of the boat

#define IN1 2
#define IN2 3
#define IN3 4
#define IN4 5

void setup() {
  Serial.begin(9600);
  pinMode(IN1, OUTPUT);
  pinMode(IN2, OUTPUT);
  pinMode(IN3, OUTPUT);
  pinMode(IN4, OUTPUT);
}

void loop() {
  if (Serial.available() > 0) {
    char value = Serial.read();
    Serial.print(value);

    if (value == 'F') {
      forward();
    } else if (value == 'B') {
      backward();
    } else if (value == 'L') {
      left();
    } else if (value == 'R') {
      right();
    } else {
      Stop();
    }
  }
}

void forward() {
  digitalWrite(IN1, HIGH);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, HIGH);
  digitalWrite(IN4, LOW);
}
void backward() {
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, HIGH);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, HIGH);
}
void left() {
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, HIGH);
  digitalWrite(IN3, HIGH);
  digitalWrite(IN4, LOW);
}
void right() {
  digitalWrite(IN1, HIGH);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, HIGH);
}
void Stop() {
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, LOW);

Thanks in advance!

2

Your assembly photo is quite different to your wiring drawing.

3

What testing have you done using your sensor and an Arduino? How did you connect for testing?

4

I haven't tried connecting the arduino sensor just yet

5

Have you used it in the past, so you know what to expect?

6

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