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“Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. The tags contain electronically stored information. Passive tags collect energy from a nearby RFID reader’s interrogating radio waves. Active tags have a local power …
“This instructable helps you to build a simplified tracking system and was inspired by beacon technology. In this case, the Ultrasonic rangers are functioning as/mimicking beacons, and the LCD screen as the screen of your mobile phone. The prototype …
“Finding a free parking lot in a congested city like Dhaka is very hard. Here, if anyone wants to go outside from home with personal car first thing comes in his mind is about parking, where he will park his …
“In this instructable, I have made a SMPS circuit which can be used to charge your laptop in a car or from any 12V battery. You can plug your existing charger in the circuit. It is not an inverter. Basically …
“Since 1988, our town of Holland, Michigan, best known for its annual tulip festival, diverted waste heat from its power plant into pipes that run under streets and sidewalks in the central business district. For years we have enjoyed open …
“The ESP8266 is an amazing chip! it comes in a variety of forms : ESP-12, ESP-07, NodeMCU, Wemos D1, and, the ESP-01. We all love to play with our ESP’s. Programming the ESP-01 is no easy …
“”Tweet my boots to make them change colour”. This was a brilliant way to get out of making small talk when networking at conferences. I hacked my LED boots so anyone anywhere could change the colour by tweeting them. I …
“Our final project for ECE 4760: Digital Systems Design Using Microcontrollers is an ultra-secure programmable lockbox. The box can be unlocked using a keypad, three tunable knobs, a ‘knocking’ pattern (through a piezo electric sensor), and a fingerprint sensor. The …
“This is an IKEA SPÖKA light. It is a small night light resembling a little ghost. Originally powered by an internal rechargable battery, the light is controlled by a single button. When pressing that button it starts cycling through various …
“It is soon Christmas and I am facing the very same, yearly recurring problem: What gifts to buy! I generally prefer gifts to have a personal touch and was always fascinated by some personalized keychains I would receive from my …