Free Elektor Article: Power Outage Detector with Text Messaging
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Free Elektor Article: Power Outage Detector with Text Messaging

Power outages are fairly rare in central Europe, and when they do occur, they are usually short. However, if the heating system of your holiday home doesn’t start up again after a power outage, the consequences can be costly. And even if only your freezer at home stops working while...

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Programmable Thermostatic Switch using AD22105
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Programmable Thermostatic Switch using AD22105

This project simply switches the system OFF or ON whenever the temperature rises at the desired set point.  The desired setpoint can be set using a fixed resistor R6 or PR1 trimmer potentiometer. Use any of at a time R6 or PR1. You can calculate the setpoint resistor R6 using the...

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Capacitive Touch Sensor Toggle Switch
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Capacitive Touch Sensor Toggle Switch

Touch sensors are used in many applications, from remote controls, LED light controls to appliance control panels. This is a simple solution to replace the mechanical buttons and can be implemented in a wide variety of applications. The sensor provides great user experience. It is easy...

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Current Limit Solid State Power Switch with Latch
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Current Limit Solid State Power Switch with Latch

The project published here is a solid state power switch with current limiting that prevents damage to host devices from faulty load conditions. This analog current limit switch have low on-resistance P-channel MOSFET and INA202 driver IC from Texas instrument. The project operate from...

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Temperature Controlled FAN using ATtiny10
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Temperature Controlled FAN using ATtiny10

The electrons movement in electronic components lead to the generation of heat which when beyond certain thresholds, prevents some components from functioning properly and in others could lead to a catastrophic breakdown. For this reason, the topics of ventilation, overheating, and...

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Tiny Reflow Controller with OLED display
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Tiny Reflow Controller with OLED display

Last time we examined how to build  a DIY Reflow Oven controller using the Tiny Reflow Oven Controller v1 by Rocket Stream. However, Rocket Stream recently released the Tiny Reflow Controller V2 and for today’s tutorial, we will attempt to build this second version. The Tiny Reflow...

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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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