Tiny Wi-Fi Switch for $3

Out of curiosity, I ordered the tiny ESP8266 relay switch from aliexpress.com but never knew it could be so embarrassing to find the right way to operate. The vendor said that the switching program is inbuilt and I only have to use some android phone to operate it. But despite several attempts with several Chinese and English android apps, nothing happened The device gets connected with the WiFi of my PC or ...

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ESP8266 – 5$ internet connected switch

In this tutorial we will show how to build WiFi internet connected switch connected to EasyIoT Cloud. We will use ESP8266, solid state relay and Arduino IDE. Switch can be controlled by WEB application, native Android application or button. Improved version of this switch can be found here: https://www.instructables.com/id/ESP8266-5-Internet-Connected-Switch-Improved/ This internet switch is "plug and play" ...

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LT8330 – Low IQ Boost/SEPIC/Inverting Converter with 1A, 60V Switch

Features 3V to 40V Input Voltage Range Ultralow Quiescent Current and Low Ripple Burst Mode® Operation: IQ = 6μA 1A, 60V Power Switch Positive or Negative Output Voltage Programming with a Single Feedback Pin Fixed 2MHz Switching Frequency Accurate 1.6V EN/UVLO Pin Threshold Internal Compensation and Soft-Start Low Profile (1mm) ThinSOT™ Package Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN Package Descriptio ...

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4×1 WiFi Wireless Antenna Switch

I started playing with electronics back when I was 10 years old in Argentina, where I grew up. Then I got my ham radio operator license when I was 16 years old and I was very active in the ham club and on the air. It was then when I built my first vacuum tube transmitter and refurbished and old receiver (also vacuum tubes) that somebody from the club was throwing away. My interest for science and electronic ...

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LT3952 – 60V LED Driver with 4A Switch Current

Features 4000:1 True Color PWM™ Dimming 4A, 60V Internal DMOS Switch Wide Input Voltage Range: 3V to 42V 0V to 60V Output Current Regulation with Monitor PMOS Switch Driver for PWM and Output Disconnect LED Short-Circuit Protection and SHORTLED Flag Internal Spread Spectrum Frequency Modulation Constant-Current and Constant-Voltage Regulation Input Current Limit and Monitor Adjustable Frequency: 200kHz to 3 ...

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LT8570 – Boost/SEPIC/Inverting DC/DC Converter with 65V Switch, Soft-Start and Synchronization

Features 65V Power Switch Current Limit Options of 0.5A (LT8570) or 0.25A (LT8570-1) Adjustable Switching Frequency Single Feedback Resistor Sets VOUT Synchronizable to External Clock High Gain SHDN Pin Accepts Slowly Varying Input Signals Wide Input Voltage Range: 2.55V to 40V Low VCESAT Switch Integrated Soft-Start Function Easily Configurable as a Boost, SEPIC, or Inverting Converter User Configurable Un ...

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LT3790 – 60V Synchronous 4-Switch Buck-Boost Controller

Features 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT Synchronous Switching: Up to 98.5% Efficiency Wide VIN Range: 4.7V to 60V 2% Output Voltage Accuracy: 1.2V ≤ VOUT < 60V 6% Output Current Accuracy: 0V ≤ VOUT < 60V Input and Output Current Regulation with Current Monitor Outputs No Top FET Refresh in Buck or Boost VOUT Disconnected from VIN During Shutdown C/10 Cha ...

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Internet Controlled Mains Switcher

This is a very low cost and basic from of home automation allowing you to turn on and off lights and other devices using your computer or mobile phone. It has been built and tested use using UK power plugs, but the same protocol is used on many budget remote power switchers from around the world. You will need... A Spark Core wi-fi development kit A remote controlled mains sockets set * A 433MHz Transmitter ...

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Arduino project: USB foot-operated mouse switch

This foot pedal plugs into the Arduino case which plugs into your PC via microUSB cable. Arduino microcontrollers can easily be used to power fun projects like robots and even sending tweets to Twitter but they’re versatile enough to turn up in the strangest of places – like under your feet. We had a question from a reader about whether it was possible to create a foot-operated mouse switch to help reduce h ...

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Touch-less Switch

Arduino Project – Touch Me Not I modified the Arduino project from the Arduino Starter Kit (Touch Sensor Lamp). Now it lights up an LED when your hand is close on the aluminium foil (without even touching it). This can be used as a ‘Touch-less Switch’. I just did it because it seemed pretty cool to me! How is this arduino project useful? Let me know how you think this can be useful, in the comments below. H ...

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Making a program start using a switch

Connecting the Switch To connect the switch to the Arduino, you will need the switch, two jumper wires, and a 10kΩ (brown-black-orange) resistor. Once you have all the required parts, you will need to wire the switch to the Arduino using the breadboard. NOTE: The virtual board may be slightly different from the physical one. This is because of some limitations of the program used to create the virtual layou ...

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Use foot switch to open Linux terminal using an Arduino

So here is how i made my foot pedal used to start Linux terminal using an Arduino. It's made because I am board of pressing the terminal icon with my mouse. P.S. Sorry for my English. I am from Croatia. Tools needed: -Soldering iron and some solder -Wire clippers or any other cutting tool -Screwdriver Parts needed: -Arduino system -Foot switch (I found mine in my workshop) -Wire -10k pull-down resistor or y ...

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