praveen @ circuitstoday.com:
This article is about interfacing gyroscope to arduino. Gyroscope is a device used for measuring the angular velocity in the three axes. It works under the concepts of angular momentum and can be used to determine the orientation of an object. Typical applications of gyroscope includes missile guidance, flight control, smart phones, game station joy sticks etc. Mechanical gyroscopes, MEMS gyroscope, optic fiber gyroscope, ring laser gyroscope.
Interfacing gyroscope to arduino - [Link]
by noelportugal @ instructables.com:
The day I read that a new $5 wifi module was available, I order a few of them to test. Now, a few weeks later I want to share my experience.
This is a very simple demo using the ESP8266 and Arduino to update a remote server (https://thingspeak.com/) using a digital temperature sensor.
ESP8266 Wifi Temperature Logger - [Link]
by df99 @ instructables.com:
This is an OLED clock I built using an Arduino Micro, a tiny OLED 128×64 display using the SSD1306 controller and I2C interface, and a precision DS3231-based real-time clock module with rechargeable battery backup. It features a menu system for setting the RTC (no serial port or USB required)
DS3231 OLED clock with 2-button menu setting and temperature display - [Link]
by Kathy Yang @ elecfreaks.com:
We could often feel frustrated when programming using the Arduino IDE. Why? Not because of how many errors we encounter in the program, but it is so difficult to find out the errors in source code, which is really something freaking out. For example Arduino IDE does not seem to display the number of rows, the prompt window can show us in which line the error occurs, but we just have no ideas where the line it is. If you can double click to find exact position of that line, then we will not care about which line it is: line 1 or line 10. But that just hasn’t happened.
Use Sublime Text 2 to Replace Arduino IDE - [Link]
by FabricateIO @ instructables.com:
Smart lightbulbs cost your firstborn child. Which is a shame, because smart lights unlock tremendous potential for home automation, energy savings, and all sorts of cool projects.
If only there was a way to control your lights without breaking the bank…
And now there is! For $19 on Amazon, you can get a 4-lightbulb kit from China that ordinarily is limited to 4 channels from a single remote…but with some creative hacking, can be used to control an unlimited number of channels using an arduino and a very simple RF module!
Cheap Arduino Controlled Light Sockets - [Link]
The ultimate combination of an Arduino-compatible board and your day-to-day Gadget in one handheld Device.
Phoenard is an All-in-one Arduino-compatible prototyping Gadget powered by an 8-bit AVR ATMEGA2560, identical to the one you find in Arduino Mega. It is essentially a pocket-sized prototyping platform which you can use as the ‘brain’ in your projects, similar to using an Arduino. BUT, it has a lot more features built into a single case developed in such a way that you can use it as your day-to-day Gadget.
Phoenard: World’s 1st Arduino-compatible Prototyping Gadget - [Link]
by praveen @ circuitstoday.com:
A simple LPG sensor using arduino is shown in this article. This circuit indicates the amount of LPG in the air. The circuit sounds an alarm and trips a relay when the concentration is above a predetermined level. MQ2 is the gas sensor used in this project. MQ2 is an SnO2 based gas sensor which can sense gases like methane, propane, butane, alcohol, smoke, hydrogen etc. Since LPG primarily contains propane and butane, MQ2 sensor can be used for sensing LPG. The figure below shows the schematic and arrangement of an MQ2 gas sensor.
LPG sensor using arduino - [Link]
by praveen @ circuitstoday.com:
This article is about a simple auto ranging ohmmeter using arduino. The measured resistance is displayed using a 16×2 LCD display. The circuit is sufficiently accurate and uses minimum number of external components possible. Before going into the details of this project, lets have a look at the basic resistance measurement method.
OhmMeter using Arduino – with Auto Ranging Feature - [Link]
by Jeremy Cook @ makezine.com:
Most of us have probably seen clocks or numerical displays that flip sequential boards to display the next number in a sequence. If you wanted to take that a step further, you could make a replica of “Dottie,” which flips small dots as pixels. As the great video below says, it makes a “pleasant mechanical flipping sound all day.” It also tells the date, chimes every 15 minutes, and gives an animation show once an hour.
Dottie the Flip Dot Clock - [Link]
BITalino is designed for anyone interested in building self-tracking applications based on information from your body.
BITalino is a low-cost, purpose-built, all-in-one hardware and software toolkit designed for quick and easy creation of cool projects with body signals, development of quantified self wearable devices or apps, and/or learning how to build medical devices. Comparative professional-grade tools for this purpose can easily cost in excess of $10,000; our vision is to make them available for anyone, and harness the power and creative thinking of the open-source movement to boost innovation in biosignal-based applications in unprecedented ways.
BITalino (r)evolution - [Link]