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Presented here is the circuit that drives twenty LEDs in a random manner. LED flashers and sequencers are used in decorative lights to give pretty colour combinations by glowing LEDs in random or sequential manner. This flasher has a...
This is a very simple digital distance meter, which you can add to your water-level indicator circuit to show water level in a tank, or use it for a school/college project. The author’s prototype is shown in Fig. 1. Circuit...
As you may already know, using a USB OTG (on-the-go) adaptor, you can connect pen drives, game controllers, etc to your Android device. This adaptor can also be used to power small devices like Arduino boards from Android devices. However,...
In this time when COVID-19 is spreading rapidly, it is essential to maintain social distance and avoid large public gatherings at one place to break the chain of corona infection.But maintaining this is not easy. Many people, knowingly or...
Geofencing is one of the greatest technologies of the 21st century. It has a multitude of applications such as car tracking and parcel location tracking. Here is a more exhaustive list of the applications of geofencing Can be used...
This simple GSM security switch project is based on Arduino Nano microcontroller (MCU) and SIM800L GSM modem (Fig. 1). The cellular-based alert system is configured to send an SMS in response to a security switch action. When the security sensor...
COVID-19 is a highly infectious and easily contractable virus that can become extremely hard to control once it begins to spread. Social isolation/distancing is one of the most important and effective steps one can take to break the chain...
This is a concept DIY of COVID-19 Corona Detection Device that helps to detect the symptoms of COVID-19, so as to help individuals quarantine themselves and practice social distancing. The DIY works by detecting the basic symptoms of the virus,...
This project can be used to control up to four industrial electrical appliances with the help of a joystick and an Arduino Nano board. The block diagram of the joystick-controlled industrial automation system is shown in Fig. 1. The circuit...
Accidents due to drunk driving are a common occurrence in metropolitan cities. Albeit helpful, constructing checkpoints at different locations is a cumbersome job and takes a lot of timing, as does stopping and checking every potential drunk driver. To...