CORE_TECH

Electronic projects for students :- Pro 2  Ultrasonic range finder using 8051 . A simple ultrasonic range finder using 8051 microcontroller is presented in this article. This ultrasonic rangefinder can measure distances up to  2.5 meters at an accuracy of 1 centi meter. AT89s51 microcontroller and the ultrasonic transducer module HC-SR04 forms the basis of this circuit. The ultrasonic module sends a signal to the object, then picks up its echo and outputs a wave form whose time period is proportional to the distance. The microcontroller accepts this signal, performs necessary processing and displays the corresponding distance on the 3 digit seven segment display. This circuit finds a lot of application in projects like automotive parking sensors, obstacle warning systems, terrain monitoring robots, industrial distance measurements etc. HC-SR04 ultrasonic module. HC-SR04 is an  ultrasonic ranging module designed for embedded system projects lik

Electronic projects for students :- Pro1 Street light circuit. Description. T he circuit diagram present here is that of a street light that automatically switches ON when the night falls and turns OFF when the sun rises. In fact you can this circuit for implementing any type of automatic night light. The circuit uses a Light Dependent Resistor (LDR) to sense the light .When there is light the resistance of LDR will be low. So the voltage drop across POT R2 will be high.This keeps the transistor Q1 ON. The collector of Q1(BC107) is coupled to base of Q2(SL100). So Q2 will be OFF and so do the relay. The bulb will remain OFF. When night falls the resistance of LDR increases to make the voltage across the POT R2 to decrease below 0.6V. This makes transistor Q1 OFF which in turn makes Q2 ON. The relay will be energized and the bulb will glow. Circuit diagram with Parts list. Notes. P OT R2 can be used to adjust the sensitivity of the circuit. Y ou can use bu

Step 1: Meterials You Will Need You will need: - A Calculator - Carbon Rod/ Copper Rod - A 1x1 Inch Aluminum Foil - A Small Cylindrical Container - Two 3 Inch Wire - Multi Purpose Pliers - Glue Gun Step 2: Making Some Holes Use a drill or a pointy object to make some holes located on the bottom and lower side. Step 3: Adding The Carbon Rod (Positive) Glue the carbon rod  in place as the positive rod. The carbon rod is from a used AA battery. Warning: Never open alkaline "it is messy". Step 4: Adding The Foil (Negative) Glue the foil in place as the negative plate. Step 5: Connect The Water 's Wires Connect the wire of the water battery, and glue it so it won't leak. Positive wire connected to carbon rod while negative is connected to the foil / zinc.   Step 6: Disassembling The Calculator Disassemble the calculator with a screwdriver Step 7: Connect The Water Battery To The Calculator

Make a solar cell in your kitchen A solar cell is a device for converting energy from the sun into electricity. The high-efficiency solar cells you can buy at Radio Shack and other stores are made from highly processed silicon, and require huge factories, high temperatures, vacuum equipment, and lots of money. If we are willing to sacrifice efficiency for the ability to make our own solar cells in the kitchen out of materials from the neighborhood hardware store, we can demonstrate a working solar cell in about an hour. Our solar cell is made from cuprous oxide instead of silicon. Cuprous oxide is one of the first materials known to display the photoelectric effect , in which light causes electricity to flow in a material. Thinking about how to explain the photoelectric effect is what led Albert Einstein to the Nobel prize for physics, and to the theory of relativity. Materials you will need The solar cell is made from these materials: A sheet of copper

  Requirements :- 1 Solar Cell 1.5v  - 4 2 Diode 1N4007   - 1 3 Capacitor 470u 16v - 1 Optional :- 4 Regulating IC 7805 - 1

Apparently, it is believed that Facebook does not support animated GIF images. This belief is correct to some extent. However, as you can see from this post " DeAdLy HaCkeR ", you definitely can insert an animated GIF image into a fcaebook post. ITS NOw possible to post moving animated gif images in facebook . but how , very few people know about this ... The statement that 'FACEBOOK does not support animated images' only means to say that the like google+ it does not support such images. In other words, if you try to upload an animated GIF image in your facebook post though browsing , the GIF file is converted automatically into a static PNG file during the upload process. and some time it will show error notice that image is not 180 pixel. So how does one add an animated GIF into a Facebook post? Very simple really.   So I Made this tutorial just follow step by step . Just login directly into your Facebook. All images ad

Whether you're looking for tips on using layers, advice on mastering the pen tool, a guide to using RAW, or ways to improve your brush work, it's all here! And if you've just got hold of Photoshop CS6 , then you'll have plenty to get your creative gnashers stuck in to! Most of these tips were originally published in our sister title, Practical Photoshop magazine - the best resource for all your Photoshop insights, inspiration, and tips. If you want to get more in-depth tutorials and all the very latest helpful info, then we suggest you get hold of the mag! Read all our Photoshop-related articles here Quick Photoshop tips 01. Rotating patterns Photoshop tips: Rotating Patterns You can make amazing kaleidoscopic patterns with the help of a keyboard shortcut. Cmd/Ctrl+Shift+Alt+T lets you duplicate a layer and repeat a transformation in one go. To demonstrate, we’ve made a narrow glowing shape by squeezing a lens flare eff