Website is Down Detector
https://www.electronics-lab.com/website-is-down-detector/
by jckelley @ instructables.com: If you work in a company that has a website, you know how important it is that the website always be up and running. That’s why you constantly see “99.99999% reliability!” all over the fancy server hosting sites. A website can’t make money if the system is down, so knowing when that […]
How to Make an Internet Speed Analyzer
https://www.electronics-lab.com/how-to-make-an-internet-speed-analyzer/
This is an internet speed Analyzer based on Raspberry Pi: This application will run speedtest-cli against speedtest.net’s servers using cron. It will then email the results daily and weekly. Also – using http://www.percheron-electronics.uk/shop/ e-paper hat – you can utilize the buttons to run the speed-test manually and display the results to the screen. To use […]
Lie Detector and Biofeedback Arduino Based
https://www.electronics-lab.com/lie-detector-and-biofeedback-arduino-based/
by masteruan @ instructables.com: This tutorial will explain how to build a machine for biofeedback. But first a bit of theory. What is biofeedback? Biofeedback is the process of gaining greater awareness of many physiological functions primarily using instruments that provide information on the activity of those same systems, with a goal of being able to […]
Wrist Mount Digital Altimeter
https://www.electronics-lab.com/wrist-mount-digital-altimeter/
This project is a simple wrist mount digital altimeter which is a device used to determine altitude. This design uses atmospheric pressure to calculate the altitude of its location. The lower the atmospheric pressure, the higher the altitude. The project is comprised of a microcontroller (MCU), an 84×84 pixel graphic LCD and a barometric pressure […]
Motorcycle custom instrument panel
https://www.electronics-lab.com/motorcycle-custom-instrument-panel/
Josh from Colorado build a nice dashboard for this motorcycle based on ATMega128 and EPSON S1D13700 LCD Screen: Since the GSXR is now a street fighter the factory gauges won’t do, and I wanted something I could log air/fuel ratios with so I can jet the bike. I went a little overboard making a new […]
Open Badge: The LED Badge
https://www.electronics-lab.com/open-badge-the-led-badge/
Rohit Gupta published a new build, the OpenBadge The major elements on the PCB were: – LED Matrix – A MSP430G2553 microcontroller brain – A ULN2803 Darlington Driver to sink the current – A USB connector to charge the battery – A SBW connector to program the MSP430 – A Switch to change the message […]
Portable GPS Data Logger
https://www.electronics-lab.com/portable-gps-data-logger/
elm-chan.org has build a portable GPS logger based on ATMega328 mcu: I have built a GPS Logger and it works very well to trace the drove route for two years. By the way, the navigation solution computed by GPS receiver itself has an excellent accuracy without DGPS because an intentional offset added by US goverment […]
DIY milliohmmeter
https://www.electronics-lab.com/diy-milliohmmeter/
by hwmakers.eu: This is an example of a simple and cheap milliohmmeter that can be made by every maker. The core of the circuit are a current source (LT3092) and a current sense (INA225): a costant current flows through the milliohm resistor under test and the voltage at the current sense output gives the value of […]
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 […]
How to use a Serial Voice Recognition Module
https://www.electronics-lab.com/how-to-use-a-serial-voice-recognition-module/
by codebender_cc @ instructables.com: In this tutorial you will learn how to use a voice recognition – serial – module with the Arduino uno board. This module can store up to 15 voice commands. Those are divided into 3 groups, with 5 commands in each group. First we should train the module with voice instructions group […]