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Monitoring the temperature of a transformer or electric motor winding involves data acquisition. This project is developed to monitor the temperature of an electric motor and a transformer with high accuracy, incorporating display and alarm facility. This circuit can...
This circuit produces an alarm whenever someone comes near the spotting range of its passive infrared (PIR) motion sensor. It can be used as a security system to guard your home and other property, if utilised properly. The author’s...
This article presents a simple circuit to convert transistor-transistor logic (TTL) or pulse width modulation (PWM) signal to analogue signal using LM358 operational amplifier. The circuit can be used as an extension shield for Arduino or microcontroller (MCU) or...
Real-time clock (RTC) integrated circuits (ICs) are used for reasonably accurate time displays. The accuracy of RTCs mostly depends on the crystal. In a long run, a small-time deviation will be observed in the RTC circuit due to seasonal...
Here is a simple circuit of a light-activated switch that automatically turns on the light/lamp at night and switches it off during the day. You do not have to manually operate the switch. Circuit and working The circuit diagram of the...
Raspberry Pi is a low-cost, high-performance, credit-card-sized computer for learning, solving problems and having fun. Easy to get started with, this tiny yet powerful computer comes with additional resources including monitor screen, keyboard and mouse. Imagine the inconvenience of...
All schools and colleges follow a timetable for their classes, providing different time slots for different subjects. In order to follow the planned timetable, a person is assigned the job of turning on and off an electric bell manually...