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  1. Controlling Devices Over WiFi Using Nodemcu and Android Phone.

    Nodemcu is a great WiFi chip, that can be used in several wireless applications.
    In this blog post, an Application running on Android Phone will get the temperature and humidity values from the Nodemcu and it will also control the 4 Relays, which are connected to the Nodemcu, all over WiFi channel, so using this setup, you can control your appliances using Android Phone over WiFi.

    Block Diagram is as follow:

    Attachment 132992

    The ...

    Updated 27th December 2016 at 17:52 by xpress_embedo

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  2. Microcontroller Tips: Trade-offs in Choosing 8-bit vs.16- and 32-bit Architectures

    by Scott Thornton

    Besides the advantage of higher performance in performing calculations and faster data transfers, what are the advantages of working with an MCU that has a larger bus width?

    MCUs with higher data bus widths enjoy higher performance in terms of faster operations, often more powerful development tools, more features, and better power efficiency. In general, lower bus widths limit perfprinted-circuit-board-1539113_1920ormance in exchange for a slight ...
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  3. Analog IC Tips: What’s the difference between instrumentation & precision amplifiers?

    By Janet Heath

    Instrumentation amplifiers (INAs) are precision devices, but they have a particular function and aren’t another type of operational amplifier (op amp). Instrumentation amplifiers are not op amps; you can’t configure them in a multitude of ways, and you only set gain to a chosen value, and only within a specified range. So op amps are much more versatile than instrumentation amplifiers. An INA should never be called an “op amp,” because they aren’t and do not have the ...
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  4. Power Electronics Tips:What engineering school doesn’t teach about ceramic capacitors

    By Joshua Israelsohn

    Ceramics comprise the most widely used non-polarized dielectrics. The reason is they offer attractive combinations of volumetric efficiency, manufacturability, and cost. Some applications -- such as high-frequency RF signal chains and high-precision measurement circuits -- take advantage of the parametric performance available from other dielectrics, but currently available ceramic formulations perform well in a wide range of power interface, signal coupling, ...
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  5. Power Electronics Tips: How to select input capacitors for a buck converter

    by Maniing Xie

    Electromagnetic interference (EMI) can create serious issues for manufacturers in an industrial environment. A buck converter generates a pulsating ripple current with high di/dt at the input. Without input capacitors, ripple current is supplied by the upper power source. Printed circuit board (PCB) resistance and inductance causes high-voltage ripple that disrupts electronic devices. The circulating ripple current results in increased conducted and radiated EMI. Input ...
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