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Nowadays, people have smartphones with them all the time. So it makes sense to use these to control home appliances. Presented here is a home automation project using a simple Android app, which you can use to control electrical appliances...
There are occasions when the water pump runs idle when there is no water in the sump/underground tank or the treadmill machine is left on, unintentionally. In such cases, motors of these electrical machines run unnecessarily. Running these for...
This project is designed to replace the defective control board with a new Control Board in Microwave Oven irrespective of brand and capacity. Microwave ovens are dumped as e-waste due to unserviceable control boards. Spare parts such as magnetron,...
Presented here is an LED lantern that also functions as an emergency light or a tent light. The design has all required functions, including on/off switch, maintenance-free rechargeable battery, integrated battery charger and more. The built-in battery can be...
Mixing liquids using a muddler or churner is a traditional technique. However, it is time-consuming and sometimes fails to mix these properly. Here is a low-cost and versatile hand mixer circuit. It can be used for making stuff like...
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...
 
 

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