Tag: Do it yourself
Millions of people across the globe suffer from neuro conjugate disorder, or some other form of paralysis, which does not let them move any body part except their head and the eyes. To overcome this challenge, we can make...
Sometimes, we need frequent sensor data transmission from one end of the world to the other for which we use online servers and services like ThingSpeak, an IoT analytics platform service that allows you to aggregate, visualise, and analyse...
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...
Smartphone batteries need to be charged frequently, generally more than once a day. But their charging cables tend to get damaged after some time due to excessive use, which can be annoying—especially if they fail when these are needed...
This simple musical horn can be used in a car, scooter, cycle, or motorbike, or even as a call-bell. It uses melody generator IC UM66 that generates a musical tone, which is amplified by IC LM386. The tone of...
Touching of a doorbell switch by different people can spread coronavirus and many other communicable diseases from one person to the others. So, protection from such diseases at the entrance doorbell switch is as much necessary as the use...
A first-of-its-kind robot that can recognise a human face and see dreams—like a human—can now be yours! Interested?
We humans can speak, recognise feelings and emotions, and even see dreams, which makes us different from machines. But does it make...
Radio detection and ranging (radar) systems detect the presence and distance of objects using radio frequencies. The distance of an obstacle is calculated from the time taken for the radio waves to travel to the object and, after reflection...
The most essential tool for engineers is a logic analyzer, which they operate using a laptop or PC to show the results. A stand-alone analyzer with a display can cost you around 10 thousand rupees or more. So, today...
