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Infrared sensor with PWM

May 20 in Arduino Written by: Sagar

Description: In this project, Arduino first encodes the remote signals and decodes them to control LED brightness. First of all, connect the Infrared sensor as shown in the picture below. Then, press keys 0 through 4; Arduino stores the values for keys 0 through 4 and when the sketch runs, key 0 turns off the LED and the brightness of the LED increases in steps when keys 1 through 4 are pressed. Connect LED to PIN 9 and connect output PIN of Infrared sensor to PIN 2. HOW TO USE INFRARED...

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Infrared tester using Arduino and TSOP 4838

May 20 in Arduino, Recent Written by: Sagar

Description: This project lets you know about Infrared. The LED connected on pin 13 of Arduino toggles each time a remote button is pressed. It should work with normal TV/VCD remote.Before you make this project, I strongly recommend you to make a basic remote tester with some basic electronic components. This is the fundamental circuit for controlling your home appliances. For controlling home appliances operating at 220V, you need to connect a relay in place of LED. HOW TO USE A RELAY? For...

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How to make an easy robot using Arduino, Android, Amarino, Ardumoto and Magician Chassis

May 18 in Amarino, Android, Arduino, Recent Written by: Sagar

Project Description: This project gives you the basic ideas for making a robot using Amarino and Arduino. You can control your robot with Android Smart Phone. You can easily move the robot forward, backward and rotate in both clockwise and anticlockwise directions.It is one of the easiest methods of building a robot. This project has been derived from the book " Arduino + Android Projects for the Evil Genius: Control Arduino with Your Smartphone or Tablet ", written by Simon Monk. Required...

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Experiments with 741- Operational amplifier

May 15 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: This versatile 741 operational amplifier module can be used for making a dark detector using an LDR, a photo transistor and a photo diode. The amplifier has been configured in inverting mode. It compares the change in voltage at pin 2 with the reference voltage at pin 3 and gives output at pin 6 accordingly. A general calculation and working of similar project has been explained on buildcircuit.com. CLICK HERE for the project. Read the following articles to understand the working...

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Audio amplifier using LM386

May 13 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: The LM386 is an audio amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200. You can use this useful audio amplifier for following applications: AM-FM radio amplifiers Portable tape player amplifiers Intercoms TV sound systems Line drivers Ultrasonic drivers Small...

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Clap switch using 3 different modules

May 09 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: In this clap switch we use three different modules given below. It is necessary to make these three modules in order to make a clap switch. a. Dark sensor using 2 transistors. b. Monostable mode of 555 timer. c. Toggle switch using 555 timer. Now, follow these steps: Step 1: Connect 555 timer dark sensor (monostable module) t0 2 transistors module. Remove LDR and resistor 4.7K (connected between Pin 2 and GND) from 555 timer based dark sensor circuit(given...

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Object counter

May 08 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: This is a simple object counter circuit that counts from 0 to 9. You can make this project using four different modules listed below: Infrared remote tester RC module Counter module Astable module Follow these steps: a. Connect collector pin of infrared remote tester to positive terminal of electrolytic capacitor of RC module. b. Connect counter module to RC module. Connect collector pin of transistor (in RC module) to pin 1 of 4026B. c. Orient...

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Infrared based music transmitter and receiver

May 08 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: An infrared based music transmitter and receiver is made up of three different modules. Test these three modules before you make this project. An audio amplifier Dark sensor using 741 Melody generator using UM66 You can make this project using phototransistor as well as photodiode. Follow the following steps: a. Make a melody generator using UM66 and replace the speaker with infrared LED. b. Remove LED from the 741 module and connect with Audio amplifier. c....

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RC module

May 08 in Basic Electronics, LDR Engineering, MINI Breadboard, Recent Written by: Sagar Sapkota

Description: An RC circuit is used to introduce time delay in circuits. A combination of resistor and capacitor gives a time constant. The following circuit shows a basic RC circuit. In the figure C1(100uF) works as a storage capacitor. When you press the switch, the capacitor charges quickly and provides base current to the transistor Q1, that results in collector current and that glows the LED D1.. The resistance R2(1K) provides a time constant of around 10seconds. After 10seconds, the base...

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Basic remote tester

May 07 in Basic Electronics, LDR Engineering, MINI Breadboard Written by: Sagar Sapkota

Description: This circuit can be used for testing your TV, DVD, VCD, etc. remote control. This is the fundamental module for making infrared based object counter. This project has been derived from "Remote tester project" . DATASHEET OF TSOP4838 According to the datasheet of TSOP4838, the input voltage to IR sensor should be 3V-5V. When the sensor gets infrared signal, the voltage at its VO pin drops and that triggers the BC557 transistor. At each trigger signal, BC557 glows the LED....

Latest Updates

Infrared sensor with PWM

Infrared tester using Arduino and TSOP 4838

How to make an easy robot using Arduino, Android, Amarino, Ardumoto and Magician Chassis

Experiments with 741- Operational amplifier

Audio amplifier using LM386

Clap switch using 3 different modules

Object counter

Infrared based music transmitter and receiver

RC module

Basic remote tester

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