Diode Tester Using MATLAB Based GUI
Testing of digital or analogue electronic systems typically needs application of a set of test stimuli to the inputs of the device under test...
Memory Design Using Verilog
Presented here is a memory design project using Verilog hardware description language (HDL). This project is simulated using ModelSim software, and the design is...
Intelligent Water Pump Controller with Water-level Display
Most of the circuits for intelligent level controller for water in tanks employ a bunch of wires running between the circuit and the overhead tank,...
Ultrasonic Transmitter and Receiver
Most ultrasonic transmitters and receivers are built around timer IC 555 or complementary metal-oxide semiconductor (CMOS) devices. These devices are preset-controlled variable oscillators. The...
Digital Speedometer
This digital speedometer displays the speed of the vehicle in kmph. An opaque disc is mounted on the spindle attached to the front wheel...
Arduino Based GSM Home Security System
This project is designed using normally-closed reed switches connected to doors and windows and additional passive infrared (PIR) motion sensors to detect movement of...
12V Battery Charger-cum-Variable Power Supply
The 12v battery charger-cum-variable power supply circuit presented here can charge a 12V lead-acid battery of 50Ah to 80Ah (even up to 100Ah) capacity...
Remote-Controlled Smartfan Using AT89C2051
The remote-controlled smartfans available in the market are very expensive and their operating principles are difficult to understand. Here is a simple circuit for...
Wireless Doorbell
Installing a doorbell in an existing building is a difficult task as it involves wiring that can look shabby if not concealed properly. Presented...
Over/Under Voltage Protection of Electrical Appliances
Presented here is an under/over-voltage protection circuit that protects refrigerators as well as other appliances from under & over-voltage. Operational amplifier IC LM324 (IC2)...
Dual Bridge Driver On Expansion Module With L293P For Arduino
The short article describes simple but useful four-channel driver expansion module with L293P for Arduino. The board can be called power shield, motor shield...
Controlling A Robotic Car Through MATLAB GUI
This project presents the implementation of a MATLAB based graphical user interface (GUI) to control the movement of a robotic car. The commands to...
Arduino Projects: RF Controlled Robot
Want to create a remote-controlled robot? It's easier than you think! This Arduino-based robot can be wirelessly controlled from up to 100 metres distant....
Low-Cost PWM Module For Arduino Or Development Kit With MCU
This short article describes a simple circuit capable to convert a TTL/CMOS PMW signal to an analog signal. The circuit can be used as...
Wristband Based GPS Navigation System
GPS and sensor technologies have been evolved over the past decade in the global market of transport and navigation. These technologies lead the world...
Low-Cost Universal Dual Channel Audio Checking And Troubleshooting Tool
Frequently, we are in need to do audio troubleshooting of electrical and electronic components, installations and equipment. E.g. we may need to check, test and evaluate:
...
Measuring The Charging And The Discharging Current Of The Battery
When we work with rechargeable battery it is useful to have the following functions:
measuring the charging current,
measuring the discharging current,
measuring voltage...
Multi Channel Hardware Driver for Embedded Systems
The real world embedded systems are controlling DC motors, stepper motors, electromagnetic relays, incandescent lamps, powerful LEDs, displays, inductors, transformers, long cables, etc.
On the...