Digital thermometer using 8051

admin December 13, 2012 29 Comments
Thermometer using 8051. This article is about a simple 0-100°C digital thermometer with 1°C resolution using 8051. The circuit is based on LM35 analog temperature sensor, ADC0804 and AT89S51 microcontroller. LM35 is an analogue temperature sensor IC which can...
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Most Popular Electronic Circuits

jojo August 22, 2017 3 Comments
In this article we are attempting to list the most popular electronic circuits we have published over the last couple of years.  We know, its a little difficult task! First hurdle to cross is selecting the criteria to decide...
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Voltmeter using 8051

admin October 4, 2012 14 Comments
Voltmeter using 8051. A simple 0-5V voltmeter using 8051 is shown in this article. This digital voltmeter has a sensitivity of  200mV which is a bit low but this project is meant for demonstrating how an ADC and seven...
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Interfacing ADC to 8051

admin September 6, 2012 5 Comments
ADC (Analog to digital converter) forms a very essential part in many embedded projects and this  article is about interfacing an ADC to 8051 embedded controller. ADC 0804 is the ADC used here and before going through the interfacing  procedure,...
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Working with External Interrupts in AVR micro controller

Mathew Kevin July 10, 2017 3 Comments
Introduction to Interrupts                 Although micro controllers can accept inputs from Digital I/O Ports,interrupts are preferred for accepting inputs generated by external events. This is mainly because of the less attention required for an interrupt based program. An Interrupt...
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Water Level Controller using 8051

admin October 31, 2017 166 Comments
Water level controller using 8051. A water level controller  using 8051 is shown in this article. A lot of water level controller projects have been published in this website but this is the first one based on a microcontroller....
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How to Work With SPI in AVR Micro Controllers

Mathew Kevin July 10, 2017 12 Comments
Introduction                 Micro controllers support wired communication protocols. Most of the time, microcontrollers come along with internal modules that support these protocols. The commonly supported protocols are: UART or USART communication SPI TWI USI etc. And few advanced protocols...
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Void pointers in C

jojo July 26, 2012 8 Comments
In this article we are learning about “void pointers” in C language. Before going further it will be good if you refresh about pointers by reading – Introduction to pointers in C.  A pointer variable is usually declared with...
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Introduction to pointers in C

jojo July 25, 2012 9 Comments
The basic purpose of developing a C programming tutorial for this website – CircuitsToday – is to make it useful for people who wish to work with embedded systems. Really good C programming skill is an essential to work...
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