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Digispark Attiny85 runs at 16.5MHz (with no external crystal) and has 5 I/O pins and connects to a USB port using a micro USB connector. The breakout board comes with an ATtiny85 chip pre-programmed with the micronucleus bootloader. The great thing about this bootloader is that it makes a software compatible USB interface inside the ATtiny85 - even when that chip has no USB interface. By adding support libraries into the Arduino IDE you can program this chip using the Ardino IDE system in a similar way to other Arduino microcontrollers. The rest of this page shows you a Digispark tutorial for installing the Digispark drivers, checking that they are working correctly and programming the device. Digispark ATtiny85 Bootloader Timeout The way that the Digispark Attiny85 works is to use the Window Driver to identify the Digispark but this can only be done for 5 seconds. After the 5 seconds the bootloader becomes a dumb device and the program control is transferred to ...

DigiSpark . It’s about the size of a coin, plugs straight into your USB port and will probably cover most of your microcontroller project needs. The problem is that it doesn’t seem to play nice, out-of-the-box with 64-bit Ubuntu Linux. The DigiSpark isn’t a particularly New Thing – it was a KickStarter project from August 2012. Since it’s Open Hardware, the inevitable happens and some people in Shenzen have taken the board layouts and started cranking out the hardware super, super cheap. Here’s how to get it Working on Linux Install the standard Arduino IDE for 64-bit Linux. This is version 1.5 at the time of writing. Follow DigiSpark’s instructions for adding their extensions to the Arduino IDE. You should now see something like this listed when you lsusb: 16d0:0753 MCS Digistump DigiSpark . This is specifically for 64-bit Linux (Ubuntu 14.04LTS) at the time of writing: Download the Arduino IDE programmer binary for 64 bit here and use it to replace the version t...

Figure 1 :  Asynchronous machine Diagram  The Stator is a an asynchronous machine and indicated to  that of the synchronous machine : 3 coupled enrollments as a star configuration or in triangular , they are powered by a system of equilibrium supply. it will result (FERRARIS theorem ) Of the creation of a sliding  magnetic field in the gap of the machine . the sliding speed  of the field compared to the stator is Ω s =  ωs / p Where  ωs  indicates the pulsation of the tri-phased statoric power supply network  , p is the number of coils in each coil , p therefor indicates the number of pair of poles ( one pair is constituted of the North pole and the South pole) Remark : The stator that is put on a variable field must be papered to limit the losses by Foucault currents. The Rotor of the machine sports a coiling similar to the stator : tri-phased coiling of the same number of poles as the stator . those 3 coils are co...

The potential for the Industrial Internet is vast with opportunities spread over wide areas of productivity, such as logistics, aviation, transportation, healthcare, energy production, oil and gas production, and manufacturing. As a result, many use-cases will make industry executives wake up and consider the possibilities of the IIoT. After all, industry only requires a minimal shift in productivity to deliver huge revenue, an example is that even an increase of 1% of productivity can produce huge revenue benefits such as aviation fuel savings. In order to realize these potential profits, industry has to adopt and adjust to the Industrial Internet of Things. However, spotting, identifying, and then strategically targeting the opportunities of the IIoT is not quite as easy as it might seem. It is important, therefore, to create use-cases that are appropriate to vertical businesses. For instance, the requirements of manufacturing differ from logistics, which also differs to healthcare....

Introduction  Industry 4.0 and the Industrial Internet of Things (IIoT) has become one of the most talked about industrial business concepts in recent years. However, Industry 4.0 and the IIoT are often presented at a high level by consultants who are presenting from a business perspective to executive clients, which means the underlying technical complexity is irrelevant. Consultants focus on business models and operational efficiency, which is very attractive, where financial gains and new business models are readily understandable to their clients. Unfortunately, these presentations often impress and invigorate executives, who see the business benefits but fail to reveal to the client the technical abstraction of the lower-layer complexity that underpin the Industrial Internet. In this book, we strive to address this failure and although we start with a high-level view of the potential gains of IIoT business incentives and models, and describe successful use-cases,...

v=dwdq, (1.1) where : v=the voltage in volts,w=the energy in joules,q=the charge in coulombs.

this post will show how to make a wireless charger transmitter in about 5v /1A  with circuit (by seeedstudio)  DESCRIPTION This module is designed for 5V Qi Wireless Charge Transmitter,which is base on BQ500211,BQ500211 is a second generation digital wireless power controller that integrates all functions required to control wireless power transfer to a single WPC compliant receiver.This module with FOD,it will automatically recognizes when charging module is close. Qi Wireless Charger Transmitter compation with most wireless charging mobile phone on market such Nexus 5. Specification Operating Frequency: 112kHz-250kHz Practical Distance:2-6mm Max Efficiency:80% Output Voltage:5V Output Current(maximum):1 Documents  Please visit our  wiki  page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions t...