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There is huge chemical waste being generated by billions of batteries used in remote controllers for electronic devices like TV sets, set-top boxes, air-conditioners, and even some ceiling fans now-a-days. The waste produced by their spent batteries keeps increasing...
During the testing of audio systems and telephone-like systems, it is useful to have a sinusoidal signal generator that produces forward and inverted signals in the range of around 15Hz to 15kHz. Here is one possible way of making...
This Light Intensity Controller Project describes how a simple circuit can be designed to control the intensity of a string of LEDs. The circuit is based on a common 555 timer IC that employs pulse width modulation (PWM) technique...
MagSafe, a magnetic technology embedded into the internal engineering of iPhone 12 model, was originally created as a safety feature for MacBook charging cords. It creates a new ecosystem of accessories for easy attachment and faster wireless charging. The...
If machines could recognise objects the way human beings do, it would be quite interesting. Object detection is a trending topic nowadays. So let us make an object detection camera that can do live classification of objects and people,...
If you are a space enthusiast and like to look at the stars, chances are you are already familiar with the ISS. The ISS, or International Space Station, revolves around the earth six times each day. If you are...
This simple security alarm circuit can help you secure your bike or scooter. It raises an alarm if someone tries to drive away your two-wheeler. You just need to connect the circuit to the vehicle’s wheel (preferably front wheel)...
A proven way to send an analogue signal a long distance is to transport the signal as a frequency using a voltage to frequency converter (VFC), a special circuit whose output is a frequency that is proportional to its...
Specially Abled persons, without hands or feet, often find it difficult to switch on an appliance. This switch can come to their rescue. It can be operated with a torch light or a laser light by those who are...
This simple battery charger, with overcharge protection, can be used to charge multiple cells in a battery. It indicates when the cells are fully charged. The charger requires minimal components, which can be procured easily. The author’s circuit wired...
 
 

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