Wednesday, April 4, 2018

Build a Vacation Pet Feeder!

Code:


/* Pet Feeder by William Finucane

 This code is for use with an automatic pet feeder made for the
Mad Science World at http://mad-science.wonderhowto.com/
The feeder uses a gluestick attached to a continuous rotation servo
as a linear actuator. This actuator opens and closes a compartment
of food every 12 hours to feed any domoestic animal

This example code is in the public domain.
*/
#include  

Servo myservo;  // create servo object to control a servo
                // a maximum of eight servo objects can be created


void setup()
{
  myservo.attach(10);  // attaches the servo on pin 9 to the servo object
}


void loop()
{
                                 
    myservo.write(80);             //open food gate
  delay(10500);                    //at this speed it takes 10.5
                                   //seconds to
                                   //open all the way
  myservo.write(120);              //close food gate
  delay(10000);                    // at this speed it takes 10 seconds
  myservo.write(96);               //hold gate still
  delay(43200000);                  //wait 12 hours
 
  /* the opening of the gate is longer than the closing to make
  sure the glue stick slide never comes out of the case. If the
  feeder is jostled, the extra half a second added upon closeing the
  gate will retighten the slide.
  */
}

Sunday, January 17, 2016

How To Make Mini Electric Screwdriver

Many of my hackscribers ask me to build motorised screwdriver.
For under 5$ you will buy servo motor SG90,battery holder for 2 AA batteries and 3 way toggle switch,couple of soldered wires and with hot glue gun join all that stuf you made it mini electric screwdriver.

Youtube video How to make mini electric screwdriver:https://youtu.be/nW5XZVhPD98

Sunday, November 1, 2015

How to make mini dremel tool

Rotary tools are little expensive,in today project we are making homemade mini dremel tool from household items like coke cap for saw blade,small dc motor that I pull out from old toy,momentary switch,srews and all that we glue with glue gun.

Saturday, October 24, 2015

Wednesday, September 30, 2015

Saturday, August 15, 2015

How To Make Monster Flashlight 10,000 lumens

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 http://bit.ly/1reKdMa

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Thursday, June 11, 2015

Monster 10,000 Lumens 1000w equiv.LED Flashlight

Homemade monster flashlight 10,000 lumens,100watt LED chip equivalent to 1000watts,work on lipo batteries 36 volts.

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 http://bit.ly/1reKdMa

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Sunday, April 26, 2015

How To Make 3D Hologram Projector - No Glasses


Who will know that from plastic cd case we can make mini 3d hologram generator and you can watch 3d videos without glasses.

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 http://bit.ly/1reKdMa

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Hologram videos:
1.https://www.youtube.com/user/ctmk01/videos
2.https://www.youtube.com/user/cospesas/videos

Saturday, April 18, 2015

Wireless Electricity Transmission Circuit


Part List:
1.Copper wire about 6 feet
2.One transistor 2N3904
3.One resistor 1Kohm
4.One LED diode
5.One AA battery 1.5V