Connecting Anduino to IFTTT

Connect your anduinoWiFi to IFTTT. Control everything around you, or 'let go' and let random events in cyberspace control your surroundings! Story Motivation The Arduino, and most popular DIY embedded solutions for that matter are usually great at one of two things; Communicating with sensors and discrete pieces of hardware, or running complex or interpreted code and connecting to third party services (APIs ...

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Counterfeit Macbook charger teardown

What's inside a counterfeit Macbook charger? After my Macbook charger teardown, a reader sent me a charger he suspected was counterfeit. From the outside, this charger is almost a perfect match for an Apple charger, but disassembling the charger shows that it is very different on the inside. It has a much simpler design that lacks quality features of the genuine charger, and has major safety defects. The co ...

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Quantifying cooling system

Quantifying cooling A few months ago +Neil Darlow mentioned that he had replaced his Mendel90 fan with a quiet version and it seemed to give better cooling results. This made me curious because quieter fans of the same dimensions generally spin slower and produce less airflow. So I purchased one to compare but then realised I had no better way of judging its efficacy than holding my finger in the air stream ...

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Arduino RFID Keycard Access

Use the PN532 NFC available on the anduinoWiFi shield to create an RFID keycard building access system. Motivation Keys are so last century, and now that you can easily replicate a physical key just by snagging a photo it might be time to upgrade our locks! This project outlines a framework for you to get started implementing your own unique locking mechanisms. In this project you'll authenticate individual ...

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Programmable CW Morse beacon

The provided software is based on USB Virtual Com Port (VCP) device. The setup is done with command line interface using terminal from any PC. The setup is stored in the internal flash and PC is not required for normal operation. The mini beacon keyer can be used when powered with 5V. For proper operation VCP driver is required. It can be downloaded from  http://www.st.com/web/en/catalog/tools/PF257938# or ...

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Blinky on Arduino Zero

Run a powerful open source Operating System on Arduino Zero to blink an LED on the board and open up a whole world of control capabilities! Story Version: Version: 0.9.0 (latest) We decided to write an open-source, hardware-agnostic OS for commercial IoT devices that provided low level configuration options to deal with power, memory, and performance constraints across various types of micro-controllers and ...

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How to build your own 8×8 led matrix

Learn how to make an LED matrix controlled by an Arduino. Scroll down further for step by step photos and more details. You’ll need the following parts: a prototyping board, (2) 8 pin headers, (8) 200 ohm resistors and (64) red LED bulbs. Arrange the LEDs in the board according to the design you’ve chosen: either common row anode or common row cathode. Solder the LEDs to the board, being careful to not to c ...

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Measuring Seismic Activity Using ProtoCentral OpenPressure

Seismic activity or "Vibrations of the earth" is measured using ProtoCentral's OpenPressure 24-bit DAQ System. Introduction A geophone is a magnetic device used to measure the Earth's normal vibrations (some abnormal during events such as earthquakes). These movements are also present when there is a small explosion (commonly used for mining and exploration purposes). The principle of a geophone is similar ...

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Organic solar cells set new efficiency record

Dresden, Germany - 8 February 2016 - Heliatek R&D teams reached a record conversion efficiency of 13.2% for an OPV multi-junction cell, setting a new world record for the direct conversion of sunlight into electricity using organic photovoltaic cells. The measurement was independently confirmed by Fraunhofer CSP. Thanks to the excellent low light and high temperature behavior of the organic semiconducto ...

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Useless Box

A machine that turns off the knob that you've just switched on- a ruthless battle between human and robot. Story Fascinated by this humorous anthropomorphic idea on instructables that left me philosophizing deeply about the essence of art, I decided to make this a project after witnessing many ruthless battles between human and robot on youtube. How does it work? The Arduino "listens" to the state of the sw ...

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Easily measure diode capacitance and reverse recovery

The other day Linda from Purchasing came to me with a problem: Lou from Operations needed to source a replacement for a shorted diode on a switching power supply. The darned thing was marked with a strange part number that no amount of Googling could decipher. There was a recognizable logo marking, but that manufacturer could not provide a data sheet. The part number was from a previously acquired company a ...

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NFC Color Changer

Realtime environment configuration via NDEF records and RFID tags! Just scan to change the text color! Motivation What else can we do with NFC? We've laid the groundwork for keycard access systems, initiated purchases on amazon, how about realtime configuration changes? In this write up we'll learn how to use NDEF tag formatting to store text records containing configuration information. In this case, color ...

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