Year: 2015

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...

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...

iotests.blogspot.fr build a throwie based on ESP8266 WiFi module and a mini drone battery, he writes: A few months ago, Andreas presented a nice version of the "throwie" (a LED packed with a small battery that you can throw & see shining for hours) using an ESP8266 instead of a...

by Lee Goldberg @ edn.com: Although Intersil's ISL29501 time-of-flight (ToF) signal processing IC doesn't have anything to do with the lighting applications I normally cover, I felt compelled to bring it to your attention because it's one of the most innovative LED applications...

Operational amplifiers (OPAMPs) are high performance differential amplifiers in integrated form that can be used in many different ways. A typical OPAMP has a non-inverting input, an inverting input, two dc power pins, one output pin and a few other fine-tuning pins. On the following...

Here is a nice tutorial about launching you first ballon into space. Also tracking device information is provided. Source is available here: There are a lot of reasons to put together a weather balloon launch. Its a great project for a STEM /STEAM class, it requires planning,...