Free Elektor Article: Line AC Switch Controlled by Bluetooth Low Energy
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Free Elektor Article: Line AC Switch Controlled by Bluetooth Low Energy

This article describes the electronics, the BL600 program and the Android program; the last being an Android smartphone application with which your mains switch circuit may be controlled wirelessly. You may notice an unusual detail for these pages — the transformerless power...

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How to lower relay power consumption
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How to lower relay power consumption

Clever way of starting-up relays discussed in this app note from Maxim Integrated. via dangerousprototypes.com Relays are often used as electrically controlled switches. Unlike transistors, their switch contacts are electrically isolated from the control input. On the other hand, the...

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easySwitchBox – The long-range LoRa® wall switch
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easySwitchBox – The long-range LoRa® wall switch

easySwitchBox by easySensors is a long-range LoRa® wall switch powered by coin cells and the Arduino IDE. easySwitchBox enables you to remote control your appliances from long distance as easy as the push a a button. The easySwitchBox does one simple thing – it sends on\off signals...

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Tiny Reflow Controller V2 features an OLED display
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Tiny Reflow Controller V2 features an OLED display

Rocketscream.com released their all-in-one Arduino compatible reflow controller powered by ATmega328P with OLED screen and built-in USB port. This reflow controller replaces the beloved "Tiny Reflow Controller V1" which had a character LCD display. Let's see what's new on this...

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Programmable light controller with ATmega8 and DS1307
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Programmable light controller with ATmega8 and DS1307

Dilshan Jayakody designed and build a programmable light controller that is able to turn ON and OFF a LED at predetermined time of each day. All the design files and source code related to this project are available at https://github.com/dilshan/programmable-light. The complete...

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ESP8266 WiFi Air Conditioner Remote Control
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ESP8266 WiFi Air Conditioner Remote Control

Usually, everyone switches “OFF” all electrical appliances in their home, including Air conditioners when leaving the house, this means when you get back home, the temperature will not be regulated, and it will take the air conditioner some time to achieve your desired level of...

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Reflow Master – Graphical reflow controller
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Reflow Master – Graphical reflow controller

An easy to use graphical reflow controller for your toaster oven. Source files available on github. by Unexpected Maker: Reflow Master really started out as a microcontroller-based graphing experiment... I wanted to visualise the temperature in my toaster oven when I manually reflowed...

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Wyostat: Open source Thermostat
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Wyostat: Open source Thermostat

Kevin has been working on building his own thermostat. He writes: Does the world need another connected thermostat? When my thermostat went on the blink last winter, I looked at Nest, and Ecobee, and the other me-too thermostats, and I decided I would rather build my own. Wyostat:...

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