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…
Stm32f103 microcontroller controlling stepper motor by A4988 stepper motor driver module
Stepper motors as the name depicts moves in steps. They are popular in industry due to their ability to rotate their shaft at an accurate location and outputting high torque at low angel movements. One can also control the stepper motor step speed and angle accurately with out the need of feed back mechanism. Though they…
GLCD 128×64 graphical lcd(GLCD) interfacing with 8051(89c51,89c52) microcontroller
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…
Making blinking pattern of leds with 8051 microcontroller
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…
Tic Tac Toe Multiplayer game in c++
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…
Arduino uno bistatic radar demo on hardware
This project is by a final year student of university of liverpool. The project is prototype of a bistatic radar system. Prototype is made using arduino uno and ultrasonic transmitter and receiver. To rotate the ultrasonic transmitter and receiver servo motors are used. Ultrasonic receiver and transmitter are mounted on the top of the servo…
Melay machine finite state machine design in vhdl
This tutorial is about implementing a finite state machine is vhdl. I will go through each and every step of designing a finite state machine and simulating it. Xilinx is used as a tool to construct finite state machine and for simulation and testing purpose. I suppose you know what is finite state machine and…
Arduino uno automatic car head light on/off battery and temperature monitoring system
A simple diy project on how to monitor car battery, engine temperature and automatically control the headlights of car with arduino uno. I have pretty old vehicle, which does not have any fancy items/mechanics in it. So i decided to make this project and make my car look a little bit fancy by my self.…
Driving relays with stm32f103 microcontroller using uln2003 relay driver
In this tutorial i am going to teach you how to interface relays with stm32f103 microcontrollers. Stm32 microcontrollers works on 3.3 volt TTL logic. Where as electrical relays minimum take +5 volts to make a regular connection. We must need an external circuit to drive relays with stm32 microcontrollers. This post is about teaching you…
Arduino water level/quantity/volume indicator/monitor/measurement in water tank
In the previous tutorial i discussed how to interface water sensor with arduino? What are arduino water sensor limitations? How to write effective and efficient code for arduino water detector which limits minute calculation errors? At last steps involved in converting analog water reading by arduino in to its equivalent digital form is highlighted. In…
Stm32f103 Pwm(Pulse width modulation) signal generation using internal timers, keil MDK-ARMv6 and Stmcubemx Ide
This tutorial is about generating pwm (pulse width modulation) signal with stm32f103 microcontroller using its internal hardware timers. Stm32f103 microcontroller components/peripherals initialization code is generated using stmcubemx ide and code is written and compiled in keil MDK-ARMv6 ide. A simple led is derived on a fixed pwm signal output. Led dims and blinks according to the duty cycle and frequency…
Rs485 Serial Communication Between Arduino Mega and Arduino Pro Mini
In this project i will discuss about how to use Max485 for serial communication between two arduino boards. How to effectively configure RS485 in receive and transmit mode. What are advantages of using RS485 protocol for serial communication and finally i will present a working model of RS485 serial communication between arduino Mega and Arduino Pro Mini. Rs485…
Microchip xc8 compiler place data in ram specific location/address of pic microcontroller
This tutorial is about placing data in a specific ram(random access memory) location/address using xc8 compiler and mplabx ide. I am using microchip pic16f877 8-bit microcontroller in this tutorial. It has 8KB of rom (read access memory) and 368 Bytes of ram(random access memory). Its generally not recommended to place data in data memory(ram). Since data…
ATM Machine System in C++
Here is a simple project on ATM(Automated teller machine).The code is written in c++ language. Visual studio is used to compile the code. The code carry out all the functions that all standard atm machines do. You can check amount present in your account, withdraw balance and deposit amount. In the code below there are…
Displaying ASCII Characters on 16×2 Character lcd Using Microchip PIC16f877 Microcontroller
In this tutorial i am going to print/display ASCII characters on 16×2 lcd using pic16f877 microcontroller. Lcd is interfaced with pic microcontroller in 8-bit mode. Code is written in c language. High tech c compiler is used to compile code and code is written in Mp-lab ide. Interfacing 16×2 lcd with pic microcontroller and displaying characters…
Nodemcu esp8266 stepper motor NEMA 17 controlled over WiFi
This tutorial is about controlling stepper motor over WiFi through desktop or mobile web browser using nodemcu esp8266 WiFi module. Nodemcu will work as a server and it will serve a web page. Web page contains the stepper motor control buttons. Stepper motor takes steps to complete one full 360 degree rotation. Number of steps…
Interfacing water flow meter with arduino uno
In this tutorial i am going to teach you about how to use arduino flow meter to measure the amount of water passing through the water valve. Flow meter is actually a valve. One can control the valve manually and digitally in order to limit the flow of water through the pipe. Normally manual water…
Dc motor speed and direction control with stm32f103 microcontroller and l293d motor driver
In this tutorial i am going to teach you how to control speed of dc motor using stm32 microcontroller and l293d half h bridge control ic. Dc motors are common motors you see in your houses(DC water pumps, DC fans), toys etc. DC motors rotate at a constant speed but their speed can be varied…
How to make(build) a Calculator using Pic16f877 microcontroller
Calculator with Pic 16f877 microcontroller is a comprehensive project. Comprehensive in the way that code is lengthy and logical. It will be hard for newbies to understand the code and circuit components interface with pic microcontroller. I will try to explain each and every thing about code and circuit thoroughly. The project covers all the aspects…
ADC0804 Analog to digital converter pin out and description
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…