Full-360˚ angle sensor ICs
by Graham Prophet @ edn-europe.com: Allegro MicroSystems has added two 0˚ to 360˚ angle sensor ICs that provide contactless high-resolution angular position information based on magnetic Circular Vertical Hall (CVH) technology. Allegro has incorporated advanced diagnostics to...
Continue ReadingSimple 3 phase Arduino energy meter
Simple 3 Phase Arduino energy meter from The DIY Life: Again, with this meter I was going for simplicity. Sure, for perfectly accurate measurements you need to measure both the supply current and voltage but for this application and in the interests of keeping the energy meter simple...
Continue ReadingIoT based remote heart rate monitoring system
With the advent of IoT technologies and decreasing cost of wireless sensors, the use of remote healthcare monitoring systems is growing rapidly, thereby allowing health care access to more people at affordable costs. To illustrate the concept of IoT based patient monitoring, Raj from...
Continue ReadingThermohygrometer with clock and LCD display on Arduino UNO
techrm @ instructables.com has a tutorial on a nice thermohydrometer: These 7 steps will drive you through the "construction" of a thermo-hygrometer with clock on Arduino UNO. Data and time, humidity and temperature will be shown on a LCD 16x2 display .If you have purchased a LCD...
Continue ReadingThe New Arduino 101 (Genuino 101) – Unboxing, Set Up, and Comparing it to the Arduino Uno
Arduino's newest board, the Arduino 101 is finally here... It has an Intel Curie processor, and an on-board gyroscope, accelerometer, and Bluetooth. Let's see how it stacks up to the Uno, and find out what each of the components on the board do. At the end of the video, I go through...
Continue ReadingFlow battery can run for 10 years with zero maintenance
by Jan Buiting @ elektormagazine.com: Harvard University researchers have developed a low-cost flow battery that stores energy in organic molecules dissolved in neutral pH water. In their report (see below) they claim that the new battery can run for a decade or more without...
Continue Reading1.2V-32V @3A Variable Switching Regulator using LM317
The circuit presented here is based on LM317. Generally, LM317 is known as a linear regulator IC, but here the circuit operates as a switching regulator. This circuit operates by transferring energy from the input to the output by using a solid state switch. Power Efficiency of a...
Continue ReadingBetter current with spin electronics
by Clemens Valens @ elektormagazine.com The ongoing miniaturisation of electronics is expected to reach its limits in the near future. One of the limitations is the size of electrons that are needed in electronic circuits to transport charge from one place to the other, what we...
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