Buzzer

A buzzer or beeper is an audio signalling device, which may be mechanical, electromechanical, or piezoelectric (piezo for short). Typical uses of buzzers and beepers include alarm devices, timers, and confirmation of user input such as a mouse click or keystroke.

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COVID-19 Ultrasonic Distance Warning Tool

“This tool signals optically and acoustically in several stages when the minimum safety distance is undershot. The problem One of the most effective ways to prevent the spread of COVID-19 and other viral and cold diseases is to keep …

Freezer Failure Alarm

“The other day I started thinking about our chest freezer and all of the hundreds of dollars worth of food that we have in there. What if it fails and goes unnoticed for a while? The freezer is getting older …

Iconic CASIO F-91W Wall/Desk Size

“The Casio F-91W watch ,my favorite classic digital watch and loved by thousands around the world is becoming an iconic retro fashion. So, why do not to Super-Size it with all the functionality ?! Supplies:- HMI 7” (Nextion) -Nextion IO adapter …

Room Occupancy Counter

“A device that keeps track of how many people enter and exit a room, and alerts them if there are too many people. With the Coronavirus pandemic still very much a problem, practicing social distancing and staying away from others …

Big Arduino LCD Clock With Two Alarms and Temperature Monitor Controlled by IR TV Remote

“How to build an Arduino based LCD Clock with Two alarms and temperature monitor controlled by IR TV remote. This is an LCD clock made with DS3231 real time clock module, which unlike DS1307 has the possibility of Alarm and …

LCD Alarm Clock with many faces

“An LCD1602 alarm clock that includes many of the other LCD1602 clocks found on maker sites. Looking around for something to build, I decided on a LCD 1602 clock. After perusing the Web and finding many different implementations, I decided …

Project  Mini PLC

Mini PLC

“The Mini PLC card consists of a card developed by the Jefferson Bueno Channel on YouTube and allows you to use learning in low cost programming in relation to PLC commercials. The aim is to create an open software and …

Pong Tennis With LED Matrix, Arduino and Joysticks

“This project is intended for beginners and experienced tinkerers alike. At a basic level it can be done with a breadboard, jumper wires and stuck to to a piece of scrap material (I used wood) with Blu-Tack and no soldering …

Salvaged LED Display Microgame

“Good news! I just found a discarded VCR with an LED display. That means it’s time to salvage the display and make a project out of it. There is lots of info out there on standard 7-segment displays, but …

Smart Alarm Clock: a Smart Alarm Clock Made With Raspberry Pi

“Have you ever wanted a smart clock? If so, this is the solution for you! I made Smart Alarm Clock, this is a clock that you can change the alarm time according to the website. When the alarm goes off …