Arduino Proximity Alarm
https://www.electronics-lab.com/arduino-proximity-alarm/
Lucas Reed @ instructables.com has build a proximity alarm using Arduino and an ultrasonic sensor from Parallax. If a nearby object is approaching then the alarm will sound and an RGB LED will light up. He writes: An ultrasonic rangefinder and Arduino microcontroller will check for nearby objects and if need be, alert you with […]
Arduino – Laser Tripwire Alarm System
https://www.electronics-lab.com/arduino-laser-tripwire-alarm-system/
In this instructable, we will be building a laser guided tripwire alarm system using a SainSmart Leonardo R3 development board. Arduino – Laser Tripwire Alarm System – [Link]
Wake-U-Up System
https://www.electronics-lab.com/wake-u-up-system/
Zhiyong Hao and Zhuo Chen from Cornell Univercity build A PIC-based Alarm clock system that is different from most alarm clocks known. This project is aimed to design a ‘Sleep and Wake-up Assistant’. Different from a normal alarm clocks which can only make noise, this alarm clock is designed to wake up a person in a comfortable […]
ATmega Alarm Clock & Thermometer Humidity meter
https://www.electronics-lab.com/atmega-alarm-clock-thermometer-humidity-meter/
nitram147 @ instructables.com has build a ATmega based alarm clock with temperature and humidity reading. Sensor used is DHT11. First, let me introduce you my project. I made an Alarm clock with extended functionality & thermometer and humiditymeter. Everything started when my friend (who used to bring me some old electronic rubbish and I used to […]
ESP8266 DIY Wifi Smoke Alarm Notifier
https://www.electronics-lab.com/esp8266-diy-wifi-smoke-alarm-notifier/
simpleiothings.com has build a Wifi connected smoke alarm using ESP8266 module: This tutorial will teach you how to build a Wifi Smoke Alarm Notifier for about $10 dollars. You won’t have to code anything, and you won’t have to solder or buy expensive electronics equipment. Any services you are asked to use will be 100% […]
Anti-Drowsiness Alarm
https://www.electronics-lab.com/anti-drowsiness-alarm/
This reference design is an anti-drowsiness alarm, which aims to keep the drivers alert by disrupting one’s drowse. According to the study by U. S. National Highway Traffic Safety Administration (NHTSA), drowsy driving is the primary contributor of at least 100,000 auto crashes a year. Statistics shows that most crashes caused by drowsy driving occur […]
PIC24 bedside table alarm clock
https://www.electronics-lab.com/pic24-bedside-table-alarm-clock/
Markus Gritsch posted pictures and code of his PIC24 bedside table alarm clock: Another year, another clock, but for the first time for my alarm clocks. I am not using an MSP430 but a PIC24 instead. Standby current is with 5.5 µA only slightly higher than that of my MSP430 based ones. Time keeping is […]