EG Projects

LM35 is a temperature sensor that outputs an analog signal which is proportional to the instantaneous temperature. The output voltage can easily be interpreted to obtain a temperature reading in Celsius. The advantage of lm35 over thermistor is it does not require any external calibration. The coating also protects it from self-heating. Low cost (approximately…

This tutorial is about making/building your own characters/special images and then displaying them on character 16×2 lcd. Generating custom characters or special character images and displaying on lcds of any sizes (16×1,16×2,8×1,8×2,20×1,20×2,40×1,40×2 etc) is not a very hard task. One must go through the internal structure of lcd control set in order to know how…

ADC0804 is an IC(integrated circuit) which converts the input analog voltage to its equivalent digital output. It is a stand alone analog to digital converter. Though now it is decades old and replaced by newer analog to digital converters which provide more flexibility, consumes less power, provides output in multiple formats and are smaller in…

8255 is general purpose programmable peripheral interface. It is used with many microprocessors and microcontrollers for various purposes. The device has three 8-bit ports port A, port B and port C. These ports can be used as input or output. These ports are further divided in to two groups A and B. Each group further…

Here is one of my semester project from my bachelors degree Tic Tac Toe game. It is made in c++ language using visual basic as tool to write and compile code. Game supports multiplayer as well as computer as a player. Its not an easy task to build this game especially when it includes computer as a player…

In this tutorial I am going to teach you the working and pin out of 128×64 graphical lcd. There are lot of graphical lcds available in the market. Each perform exactly the same function with some variations. Some are small in size and some bigger. Some are black and white and some multicolored. Some perform few numbers…

Blinking/flashing leds or making a special pattern of blinking leds through microcontroller is not a big task. One must know about the programming syntax of the particular microcontroller through which blinking led pattern is required. Numerous microcontrollers are available in market and each has its own programming ide(Integrated development environment). In this tutorial we are going to…

In this tutorial, I am going to measure DC current using Acs712 Hall Effect-Based Linear Current Sensor and arduino uno. Acs712 can measure current precisely and accurately if properly managed. I have gone through various blogs on internet about interfacing acs712 current sensor with arduino and other microcontrollers. I found that all of them are…

Measuring voltage of your solar panel, ups and other daily use batteries consumes a lot of time. Grabbing multi-meter, opening the battery boxes and touching both the multi-meter leads to terminals of battery takes some effort. How about developing an efficient IOT system through which you can see the status of your battery on your…

This is a simple DIY project on internet of things applications. How to monitor room temperature over WiFi? One can see temperature on his mobile, laptop or desktop computer by this DIY project. Popular LM35 temperature sensor is interfaced with Nodemcu ESP8266-12e WiFi module. Nodemcu gets raw temperature voltage form lm35, converts the voltage in…

I started working on a project with involves Atmega162 to be programmed in order to achieve the desired output. I started to write code using Atmel studio ide but I found it very hard to work with the Atmel studio ide. Atmel studio is slow and finding bugs etc is also very difficult. So I…

Here is a simple tutorial on how to interface stepper motor with 89c51 microcontroller. Stepper motor as the name depicts takes steps to complete a full 360 degree circular rotation. We can rotate stepper in clock and anti clock wise direction. Stepper motor speed can also be varied. There are many types of steeper motors four…

In this project i am going to interface latches with 8051(89c51, 89c52) microcontroller. I am going to interface  74LS574 with 8051(89c51, 89c52). You can also interface any other latch(74ls373, 74ls374 etc) with a slight changes in the connections given in the circuit diagram. The whole project is about, grabbing the status of the latches  inputs and then display…

This tutorial is about making and displaying custom characters on 16×2 lcd using 8051(89c51,89c52) microcontroller. By custom i mean characters that are not alphabets, digits or ASCII value characters. Rather they are new and designed by us. I first recommend you to please go through the following simple tutorial. This will clear you about the internal structure of…

In this post i am going to explain how to receive serial data from your pc and display it on 16×2 lcd using 89c51 microcontroller UART port. Hardware components of the project includes max232(TTL to RS232 level converter/shifter ), 8051(89c51,89c52) microcontroller and 16×2 lcd. On software side i am using Hyper terminal. Hyper terminal is a program through…

In this tutorial i am going to teach you how to interface graphical lcd 128×64 with 8051(89c51,89c52)microcontroller. 128×64 means that lcd has 128 coulombs and 64 rows. Which means you can make your desired image or text in 128×64 matrix square. Graphical lcds comes in many sizes, they also differ in characteristics. Some can be…

Measuring an individual battery voltage or a whole bank of battery using any microcontroller(arduino, microship pic, Avr, Atmega, Intel, NXP, stm32)is an easy task. You can find many tutorials on internet on how to do so. But what about if we want to measure an individual battery connected to a cluster of batteries in series…

After working a lot with 8-bit microcontrollers and learning all the protocols and functions they offer, now i thought to switch to 32-bit microcontrollers. I decided to go with arm 32-bit processors, because of their popularity in the market. I choose arm cortex-m3 processor series for my new hobby/learning projects. The reason behind choosing the…

This tutorial is a part of series of tutorials on pwm(pulse width modulation) signal generation with stm32f103 microcontroller. Previously we looked upon how to generate pwm signal with stm32 microcontroller using keil uvision 5 ide and stm32cubemx code configurator. We moved forward on generating variable pwm signal using internal timers of stm32f103 microcontroller. We studied about generating pwm, now…

Gardening is one of the common hobbies. It keeps you close to nature. It is healthiest hobby that anyone can have. Though, plants and trees are like pets. They need continuous care without break. One needs to be with them all time. This is not always possible. One may have to go for vacations or business trips or travel for other reasons. At such times, the garden may remain unattended for some time or even could be left unattended for a long period of time.