“I was thinking about writing an instructable, since last year though i read instructable daily on instructables.com. So, here is my first attempt i hope that you all appreciate my efforts. I am a B.Tech final year student of ECE department. It’s a project based on the day to day need of people. Using this system, anyone …

“HCOH (Formaldehyde) is colorless, poisonous, high water-soluble, high alcohol-soluble and high ether-soluble gas with an obnoxious odor. It is widely used in decoration, such as adhesives, carpeting, decorative paneling and so on. HCOH is a prominent factor in sick-building syndrome as its emissions (accelerated by heat and moisture) irritate eyes and mucous membranes in nose and throat, and cause headache …

“One of the problems for an office worker is a very busy schedule, leaving early and coming home late, so they can not turn on lights or other equipment when night falls. Or it could be, they rush to go to the office, so forget to turn off other electronic equipment. Another problem, a company requires timeliness to automatically turn …

“The idea is to use RFID/NFC tags placed in a grid pattern on ground. The robot contains a “map” of the RFID/NFC tags ID numbers. and Using this number knows where it is on the map. (under the strictest this robot uses NFC) I am using a small home/student/educational robot called a Bitty Bot Rover - It …

“Anything can be used as a key as far as you know the password ;) A fun way to make a lock. You set a password initially and the ultrasonic sensor every 3 seconds measure a distance(between the sensor and an object/card) and it compares the password set with the one you enter. If the password is valid, the …

“This is a ultrasonic distance measuring tool with a laser pointer to find the exact range for that particular point in space. It’s also a nice touch if you want to have ‘spidey’ senses at a comic-con. This is instructables is made with the request of fellow author @watchmeflyy as well as other members of the community.”

“This is a visual display system based on an Arduino Mega 2560. I built it as a multi-functional expansion board to mount on top of a small robot, and it features a 16x2 LCD display, a buzzer, a light sensor, a beacon light, a police-ish light bar, a small stepper motor and control board, an IR receiver, and tons of …

“In this Instructables we will be learning how to interface a 16x2 LCD with the ESP32 Microcontroller Board. There are currently no tutorials online on how to interface it, so I decided to share with you my experience and knowledge on how to connect this together! The LCD display is one of the most versatile electronic component in the maker …

“AnE Smart Doorbell Systems is a system that aims to inform you when someone presses the button of your doorbell. When a guest presses the button of the doorbell, which is placed outside the house, the buzzer will ring. The PiCam, which is mounted outside the house, allows them to take a photo/ short video should they feel that there …

“A simple Arduino clock without RTC module for beginners. It’s just a simple digital clock controlled by Arduino without using any RTC module (Real Time Clock). Every time you switch on this clock you’ve to set it to the present time, just like the analog clocks found in homes. My aim is to give beginners some understanding on …