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Technology is advancing daily and everything is turning smarter. A number of traditional devices that we use in our homes are becoming smarter now, including doorbells that are evolving with new features and styles. Today you will find many...
Presented here is a USB-based real-time data logger system using PIC18F452 microcontroller (MCU), VNC1L-1A USB host controller chip, DS1302 RTC chip and LCD. The system has the flexibility to set time and duration of data measurement. Data loggers are essential...
Presented here is the Hydropower Generation circuit that generates power from a water pipe in a building using a microturbine. The generated electricity can be used to charge batteries, which can be used for emergency lighting or other such...
The Internet of Things (IoT) is being widely used in industrial and commercial applications. This article describes how to monitor devices or things connected to WeMos D1 board, which acts as a Web server. Pin description of WeMos D1...
Presented here is a window alarm annunciator based on Arduino Uno board. An annunciator is mainly used in process plants, power plants and industries to monitor various plant conditions to alert operators about abnormal conditions or parameter deviations. It...
Here is a low-ripple and low-noise 48V regulated phantom power supply for an audio preamplifier and driver. Such power supplies require well-filtered, low-ripple and low-noise output voltage with current less than 200mA. These are relatively rare and expensive. Presented...
Presented here is a simple filtering and polarity reverse protection guard for AC/DC power adaptors. Wall adaptors have many advantages because these are low-cost, have a wide range of output voltages and currents, are easily available, come with input...
This project is based on a capacitive touch sensor for controlling four electrical appliances. Toggle switches have been used for operating lights or fans, and momentary press switches for operating electric doorbells. Most of these switches are mechanical and...
Circuits like Geiger counters, insect zappers, Nixie tubes and sensors require high-voltage direct-current (HVDC) supplies. There are various types of HVDC power supply designs available in the market, including voltage doubler or quadrupler, flyback converter and boost converter. Some of...
Presented here is an Arduino-based noise/sound level monitor that displays sound levels in decibels (dB) and corresponding voltage levels on an LCD. A noise monitoring system is used in many applications such as healthcare, defence, mining, robotics and so...