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Intermediate Projects

1Hz Precision Clock Timer

This timer makes an LED flash once every second along with a beep. The timing circuit uses a quartz crystal available in digital watches...

Pulse Counter Using AT89C4051

Pulse counters are widely used in our day-to-day life. Almost all museums and theaters have a visitor counter installed at entry exit to measure...

Designing Low Power Products Using MSP430 Microcontroller

The use of battery-operated electronics gadgets is increasing fast in our daily lives. Products are expected to be versatile, while consuming minimal power. Reduced...

Microcontroller-Based Ring Tone Player

Mobile phone ring tones sound like real audio recordings. It’s not because of the way the melodies are composed, but the protocol behind playing...

Put Coin And Draw Power

Built on the lines of payphones, here is an automatic coin collection device for payloads like lamps and air-conditioners to be used on a...

Cellphone-Based Device Control With Voice Acknowledgement

Here is a circuit that lets you operate your home appliances like lights and water pump from your office or any other remote place....

PIC16F877A-Based Temperature Monitoring System

Temperature monitoring and control is important in industry environments. Sensors are widely used for measurement of temperature. Usually, a temperature sensor converts the temperature...

Eight Channel Data Acquisition And Logging System

In environments like factories, power plants and transformers in electricity substations, controlling temperature to a safe value is important. Supervisory and control systems are...

Microcontroller-Based Moving Message Display

LED-based moving-message displays are becoming popular for transmitting information to large groups of people quickly. These can be used indoors or outdoors. We can...

Secure Digital Access System using iButton

Access control forms a vital link in a security chain. Here we describe a secure digital access system using iButton that allows only authorised...

Wireless Equipment Control Using AT89C51

Here is a microcontroller based wireless equipment controller that can switch on or switch off up to four devices at a desired time interval...

PC-Based Wireless Control for Toy Car

Here we show how you can control a toy car through your PC’s serial port using a pair of ASK transmitter and receiver modules....

Remote-Controlled 6-Camera CCTV Switcher

Closed-circuit television (CCTV) uses video cameras to transmit signals to specific monitors. It differs from broadcast television in that the signal is not openly...

Microcontroller-Based Serial Data Transfer To PC

Communication from or to a computer has become almost essential in our day-to-day lives. Though we can execute many programs within a computer itself,...

RPM Counter Using Microcontroller AT89C4051

Counting the revolutions per minute (RPM) of motors—determining the motor speed— is essential in the field of industrial automation. It is useful especially for...

SMPS Spark Suppressor

This circuit protects the power plug of a switched-mode power supply (SMPS) against sparks that may damage its contact terminals. It normally happens when...

Interfacing A Graphics LCD With The Microcontroller

Today, most of the electronics devices come with a liquid crystal display (LCD). Even new fridges have it. It is interesting as well as...

AT89C51 Based DC Motor Controller

Motion control plays a vital role in industrial automation. Manufacturing plants in industries like chemical, pharmaceutical, plastic and textile, all require motion control. And...
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