Grove - Electromagnet

An electromagnet is a type of magnet in which the magnetic field is produced by electric current. An electric current flowing in a wire creates a magnetic field around the wire, due to Ampere's law(see drawing below). To concentrate the magnetic field, in an electromagnet the wire is wound into a coil with many turns of wire lying side by side. The magnetic field of all the turns of wire passes through the center of the coil, creating a strong magnetic field there. Grove - Electromagnet can shuck 1KG weight and hold on. it easy to use, to learn electromagnet principle.

Features

Grove shape
1KG peak suction
Low standby current

Specification

Working Voltage ：DC 5V

Working Current ： 400mA

Standby current ： 200uA

Load Weight： 1KG

Usage

With Arduino

CODE:

/*
  Turns on an Electromagnet on for one second, then off for one second, repeatedly.

  This example code is in the public domain.
 */

int Electromagnet = 0;
int LED = 13;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(Electromagnet, OUTPUT); 
  pinMode(LED, OUTPUT);   
}

// the loop routine runs over and over again forever:
void loop() {
  digitalWrite(Electromagnet, HIGH); // turn the Electromagnet on (HIGH is the voltage level)
  digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);               // wait for a second
  digitalWrite(Electromagnet, LOW);// turn the Electromagnet off by making the voltage LOW
  digitalWrite(LED, LOW);  // turn the LED off by making the voltage LOW
  delay(1000);               // wait for a second
}

With Raspberry Pi

1.You should have got a raspberry pi and a grovepi or grovepi+.
2.You should have completed configuring the development enviroment, otherwise follow here.
3.Connection

Plug the sensor to grovepi socket D4 by using a grove cable.

4.Navigate to the demos' directory:

   cd yourpath/GrovePi/Software/Python/

To see the code

   nano grove_electromagnet.py   # "Ctrl+x" to exit #

import time
import grovepi

# The electromagnet can hold a 1KG weight

# Connect the Grove Electromagnet to digital port D4
# SIG,NC,VCC,GND
electromagnet = 4

grovepi.pinMode(electromagnet,"OUTPUT")
time.sleep(1)

while True:
    try:
        # Switch on electromagnet
        grovepi.digitalWrite(electromagnet,1)
        print "on"
        time.sleep(2)

        # Switch off electromagnet
        grovepi.digitalWrite(electromagnet,0)
        print "off"
        time.sleep(2)

    except KeyboardInterrupt:
        grovepi.digitalWrite(electromagnet,0)
        break
    except IOError:
        print "Error"

5.Run the demo.

   sudo python grove_electromagnet.py

Resource

File:Grove Electromagnet v1.0 SCH PCB.zip
Datasheet ZYE1-P20-15 PDF