Hi 🙂 and Welcome to our website theorycircuit.com, we publish brand new circuits, schematics and blog articles every day, by tracking and analyzing those posts based on viewers interest at the every month end we list out top 10 electronic circuits.
Top 10 Electronic Circuits-May 2016
In this project we are going to control stepper motor using Arduino board and IC L293D (H bridge motor controller), yes this L293D IC and Shield can be used to control stepper motor, have additional DC power source depends on voltage rating of stepper motor you have.
This project explains how to interface rain sensor with arduino. It is very simple project as reading analog signal from sensor just one code like “analogRead“. But the applications of this project has widest possibilities.
By using arduino and IR Receiver TSOP 1738 (in our project, you can use any ir receiver available) we can decode any infrared remote code into hex or some other format. Before constructing the circuit check datasheet of IR receiver having in your hand, hence you can connect proper bias pins and output pin. (IR = Infra Red light)
USB refers to universal serial bus. The easy way to connect peripherals with computer, laptop etc.., USB port can connect maximum of 127 using a hub or daisy chaining. Computer USB port caries 5 volt power supply, hence we can connect pendrive, hard disks, USB compatible devices without a separate power supply.
The simple line following robot circuit is given here which is constructed using L293D IC, it is a quadruple high current half H bridge driver. This is designed to provide bidirectional derive currents. By using this circuit you can construct line follower robot without any microcontroller or without any program codes.
For humidity and temperature reading the DHT22 sensor will be the perfect choice. It can read 0 to 100% humidity and 0 to 120°C temperature. The humidity sensor DHT22 is an affordable and easy to use sensor. To use this sensor with arduino boards you need to have DHT library file, you can get here.
Speed of fan can be varied by changing the input supply, if w need to change the fan speed depends on temperature changes means we can implement the following application note with Arduino and temperature sensor LM 35.
This tone control circuit is constructed by using low noise JFET input operational amplifier TL072 integrated circuit, this operational amplifier gives low noise output with few external components, it needs +ve and -Ve dual bias supply for better operation.
By using arduino digital pins and serial monitor we can measure unknown capacitor value.
This is calculation based technique, by charging and discharging capacitor through known value resistor and by calculating the time delay we can measure unknown capacitance value in farad.
The DC motor is connected to the supply through DPDT ( double pole double through ) switch, by changing the switch position we can get forward and reverse rotation from the DC motor because this switch interchanges power supply polarity applied to the DC motor.
Thank you for your interest! hope to see you next month!