Humidity and temperature are common parameters to measure environmental conditions. In this Arduino based project we are going to measure ambient temperature and humidity and display it on a 16x2 LCD screen.
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555 Monostable Circuit
When the 555 IC is used to produce an MONOSTABLE circuit - it will only pulse once. Monostable circuits can be used to turn lights/LEDs on or off just once. They are also used in many more school based circuits.
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Serial LED Flasher Circuit
In this tutorial we are going to build a Heart shaped serial LED flasher circuit using 555 timer IC and 4017 IC. It is an interesting DIY which you can build yourself for yourself or gift someone special to you.
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Reaction Time Game using 555 Timer IC
Reaction timer is a game to test how fast you reacts. This game which we have developed using 555 IC is for two players where first player starts the game by pressing start button. As soon as the START button is pressed, 7 segment display starts displaying 0 to 9 numbers in a high speed.
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1 Minute Timer Circuit
As the name suggest 555 timer is basically a “Timer”, which create a oscillating pulse. Means for some time output pin 3 is HIGH and for some time it remains LOW, that will create a oscillating output.
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PIR Sensor Based Automatic Door Opener using Arduino
You must have seen automatic door openers in shopping malls and other commercial buildings. They open the door when someone comes near the entrance and close it after sometime. A number of technologies are available to make such kinds of systems like PIR sensors, Radar sensors, Laser sensors, Infrared sensors, etc.
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8255 PROGRAMABLE PERIPHERAL INTERFACE
The 8255 is a programmable, parallel I/O device simply called PPI.
It can be programmed to transfer data in various modes of I/O.
It provides 24 I/O pins that can be grouped into three 8 bit parallel ports: PORT A, PORT B and PORT C.
Category: Microcontrollers Tags:
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Keyboard and display multiplexing -- the traditional approach
Webster’s Dictionary defines “multiplex” as “many” or “multiple”. Coincidentally, in an electronics context the word can have several meanings. Whilst they all share the intention to economize on the number of connections used, there are subtle differences.
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Servo Motor Interfacing with 8051
We can rotate servo motors to any particular angle. They are available in wide range, form high torque motor to low torque motors. In this tutorial we are going to interface a servo motor to 8051 microcontroller (AT89S52).
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Create an internet controlled robot using Livebots
Here you will learn how to create an internet controlled robot or other installation using Livebots. Livebots is a project I'm working on which consists of an easy to use website for all the robots that people can interact with through the internet.
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