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,...

by Martin Cooke @ elektormagazine.com: The MCP9600 from Microchip is a single chip solution to convert thermocouple output EMF to degrees Celsius. The chip includes integrated cold-junction compensation and corrects thermocouple non-linearity for the eight most popular types of...

by Jonathanrjpereira @ instructables.com: Ever wanted to monitor your city's Current Weather Conditions, Carbon Footprint, Noise and Pollution levels? Do you want be a Climate Change Crusader or set-up your own Tweeting Weather Station and share your local weather conditions with...

by masteruan @ instructables.com: This is a simple tutorial to create an EMF detector. You can use Arduino for this job, but is better use a microcontroller called Attiny85. It is possible program it throe the Arduino interface. Attiny85 EMF detector -...