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...

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...

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...

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...

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...

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...

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...

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...