Automatic Screwdriver

Submitted by MarieSpliid on Mon, 03/11/2013 - 20:38
MarieSpliid's picture

Description

For this assignment, I crafted an automatic screwdriver using the DC motor to spin a chop stick and an FSR sensor to control the drilling speed.

Components

  • Arduino Uno
  • Breadboard
  • FSR sensor
  • DC motor
  • Transistor
  • Resistor (10 ohm)
  • Battery case
  • 2 x AA batteries
  • Paper
  • Cardboard
  • Chop stick
  • Wadding
  • Tape 
 

 

Code

 

 
int fsrPin = A0;   // select the input pin for the FSR sensor
int motorPin = 9; // select the pin for the DC Motor
int fsrVal = 0;      // variable to store the value coming from the FSR sensor
void setup() {
  Serial.begin(9600);
}
void loop() {
  fsrVal = analogRead(fsrPin);    // read the value from the sensor, between 0 - 1023
  Serial.println(fsrVal); // print value
  fsrVal = map(fsrVal, 0, 1023, 0, 255); // even out FSR value range (0-1023) and DC motor value range (0-255)
  analogWrite(motorPin, fsrVal); //
  //Serial.println(fsrVal);
  delay(250);
}
 

screwdriver1.jpg
screwdriver2.jpg
screwdriver3_0.jpg
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