This is a very nice and interesting robotic project. As the name suggests, “object follower robot” – the robot is meant for following an object. You might have heard of… A smart luggage trolley at railway station/bus station/Airport that automatically moves on battery and motor and it follows the owner A smart cart at any…
DC motor controller using rotary encoder
Controlling a DC motor means: Start and stop the motor Change the running direction of the motor as forward (CW) or reverse (CCW) Vary motor speed (RPM) All different types of DC motor controllers control the speed and direction of the motor. They use different types of input devices like Two push-buttons (or maybe a…
Stepper motor angle control using rotary encoder
There are many applications that require setting the angular position of load/object. For example, It is required to set the precise angular position of the rudder, aileron, and elevator to fly aircraft In a ship, setting the angular position of the rudder will set the direction of navigation In a CCTV surveillance system, it may…
Arduino-based RGB LED strip controller
RGB LED strips are nowadays used everywhere in decorative lighting. They are used in different functions like birthday celebrations, marriage, reception, parties, etc. They are also used for decoration in festivals like DIWALI, CHRISTMAS, etc. Even modern houses, luxurious flats, restaurants, and hotels use RGB LED strips for illumination and decoration. The decoration using these…
VHDL Tutorial 1: Introduction to VHDL
What is VHDL? VHDL is a short form of VHSlC Hardware Description Language where VHSIC stands for Very High Speed Integrated Circuits It’s a hardware description language – means it describes the behavior of a digital circuit, and also it can be used to derive or implement a digital circuit/system hardware It can be used…
VHDL Tutorial 2: VHDL programs
In the previous tutorial on the basics of VHSlC Hardware Description Language or VHDL, we discussed the VHDL design flow and program structure. Now, it’s time to learn about the VHDL programs. However, please note, the prerequisite for VHDL programming are the fundamentals of digital electronics and digital circuit design. To fully understand these programs,…
VHDL Tutorial – 22: Designing a 1-bit & an 8-bit comparator by using VHDL
Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial, VHDL Tutorial – 21, we designed an 8-bit, full-adder circuit by using VHDL. In this tutorial, we will: Write a VHDL program that builds a 1-bit and an 8-bit comparator circuit Verify the output waveform of the…
VHDL Tutorial – 21: Designing an 8-bit, full-adder circuit using VHDL
Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial, VHDL Tutorial – 20, we learned how to design 4-bit binary-to-gray & gray-to-binary code converters by using VHDL. In this tutorial, we will: Write a VHDL program that builds an 8-bit, full-adder circuit Verify the output…
VHDL Tutorial 3: Using MAX+II to compile, simulate & verify a VHDL program
In the previous two tutorials, we learned about VHDL basics and programs. Next, we’ll simulate and verify the VHDL programs. To edit, compile, execute (simulate), or verify a VHDL program, there are requirements including software tools, such as: ISE from XILINX ModelSim from Mentor Graphics Riviera from Aldec Quartus-II from Altera etc. All of these…
VHDL Tutorial – 4: design, simulate and verify all digital GATE (AND, OR, NOT, NAND, NOR, XOR & XNOR) in VHDL
In previous tutorial VHDL tutorial 3, we have learned how to design, simulate, and verify any digital circuit in VHDL using Altera’s MAX+II VHDL simulator software. (If you are not following this VHDL tutorial series one by one, you are requested to go through all previous tutorials of these series before going ahead in this…
VHDL Tutorial – 5: Design, simulate and verify NAND, NOR, XOR and XNOR gates using AND-OR-NOT gates in VHDL
In the previous VHDL tutorial 4, we designed and simulated all seven logic gates (AND, OR, NOT, NAND, NOR, XOR, and XNOR) in VHDL. (If you are not following this VHDL tutorial series one by one, please go through all previous tutorials of these series before going ahead in this tutorial) In this tutorial, We…
VHDL Tutorial 6: Design and verify De Morgan’s Theorem using VHDL
In previous tutorial VHDL tutorial 5, we built NAND, NOR, XOR, and XNOR gates using AND-OR-NOT gates in VHDL. (If you are not following this VHDL tutorial series one by one, please go through all previous tutorials of these series before going ahead in this tutorial) In this tutorial, We shall write a VHDL program…
Basic Electronics 01 – Beginners guide to setting up an electronics lab
Electronics is ubiquitous in the modern era. Learning electronics is a never-ending fun ride. Not just a career, it can also be an exciting hobby to take up. Most of the electronics enthusiasts, however, do not know how to get started. They usually have a random beginning that takes a lot of time and effort…
VHDL Tutorial – 20: Designing 4-bit binary-to-gray & gray-to-binary code converters
Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial, VHDL Tutorial – 19, we designed a 4-bit binary counter using VHDL. In this tutorial, we will: Write a VHDL program to build a 4-bit binary to gray, and gray to the binary code converter Verify…
Computerized wireless Pick and Place Robot
This is the most advance version of “Pick and Place Robot” perhaps and most popular and widely used in recent industries. A person from a remote place can comfortably control the motion of robotic arm without any wire connection. Again there are two systems one at the transmitter side in which a software program written…
How to build an IR remote-operated RGB LED strip using Arduino
In the previous article from this series, we learned how to generate different colors in an RGB LED strip when using Arduino. We covered the basics in terms of how an RGB LED strip works, the types available, and how it can generate various colors. In this article, we’ll add to that knowledge base. You…
VHDL Tutorial – 19: Designing a 4-bit binary counter using VHDL
Note: it’s recommended to follow this VHDL tutorial series in order, starting with the first tutorial. In the previous tutorial, VHDL – 18, we designed a T-flip flop using VHDL. For this project, we will: Write a VHDL program a VHDL program to build a 4-bit binary counter Verify the output waveform of the program (the…
How to build an automatic watering system for plants using Arduino
Gardening is a favorite pastime for many — and a healthy one. In fact, a recent study found that even a small home garden offers mood-boosting qualities that are similar to those provided by physical exercise. However, one of the top concerns for many new or novice gardeners is how often to water their plants…
Wireless Sensor Network example using Arduino
A Wireless Sensor Network (WSN) consists of the following: One central receiver (for monitoring, storage, and controlling) Several wireless sensor nodes The wireless sensor node is a battery-powered or solar-powered circuit that senses any physical quantity (like temperature, pressure, flow, soil moisture, gas, smoke, etc.) and transmits its value to a remote receiver. It consists…
DIY Circuit Diagram: Transmit and Receive Low Frequency Pulses using IR Modulator & Demodulator
The circuit presented here is used to transmit and receive low frequency pulses using IR modulator and demodulator. IR modulator takes low frequency pulses as input. It modulates them on 38 KHz carrier and transmits them through IR LED as 38 KHz IR light. On the demodulator side IR sensor detects (receives) 38 KHz IR light. It demodulates this 38 KHz pulses and recovers transmitted low frequency pulses. One pulse generator is built using IC555 to generate low frequency pulses. IR modulator is also built using IC555 and TSOP1738 IR sensor is used as IR demodulator.