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Momentary switch controls mains with latch on and remote shutdown

Momentary switch controls mains with latch-on and remote shutdown

The purpose of this Design Idea was to improve reliability, add new features, and replace a latching power switch with a momentary one. The features are: The switch has foolproof protection against too frequent switching, which can be harmful for many applications. It can handle significant power because manual control and switching are separated. If […]

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RFM69HCW transceiver can go up to 20dBm

RFM69HCW transceiver can go up to 20dBm

The RFM69HCW is a highly integrated RF transceiver capable of operation over a wide frequency range, including the 433, 868 and 915 MHz license-free ISM (Industry Scientific and Medical) frequency bands. Its highly integrated architecture allows for a minimum of external components whilst maintaining maximum design flexibility. All major RF communication parameters are programmable and

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50W Power Amplifier with LM3886

50W Power Amplifier with LM3886

Description This is my second encounter with LM3886. I was pleased of the sound this chip produced the first time, so I decided to make another amplifier with it. The schematic is based on the schematic in the datasheet of the chip with minor changes. I removed the time delay capacitor connected to MUTE pin,

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shadowandy – my life stories

Arduino Dust Sensor

Put together a Arduino-based dust sensor over the weekend using the following components: Arduino Mega 2560 Shinyei PPD42NS dust sensor LCD Shield (16 x 2) The codes and wiring instructions for Arduino Mega 2560 and Shinyei PPD42NS is as follow. However, I did include Serial output so you can view the sampling results using Arduino

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Electronic skin can sense the direction in which its being touched

Electronic skin can sense the direction in which it’s being touched

We’ve already seen artificial skin capable of sensing touch and prosthetics that sense texture, but now a group of Korean scientists has come up with a stretchable electronic skin that “feels” in three dimensions. The artificial skin is made from arrays of microscopic domes that interlock and deform when pressed. It can detect the intensity,

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1A from the sugar cube sized module

1A from the sugar cube sized module

he TSR1SM series models of step-down switching regulators (non isolating – POL) have a high efficiency up to 96 % which allows full load operation up to +65°C ambient temperature without the need of any heat transmission layer. Excellent output voltage accuracy (±2%) and low standby current (~1 μA) are features that distinguish these switching

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Tic Tac TV Remote Jammer

Tic-Tac TV Remote Jammer

That moment you take your eyes off the TV remote for just a second, because of which it falls into the hands of your annoying sibling. Yes, fighting for control over the TV is a daily struggle for many. But the TV Remote Jammer shown in this Instructable, will make everyone else stop dead in

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BridgeDuino A wireless Arduino HUB and shield

BridgeDuino: A wireless Arduino HUB and shield

INTRODUCTION BridgeDuino (R 0.11) is a Swiss army knife PCB for rapid networking of inexpensive wireless communication modules. Breadboards are super for one-off experiments. But after prototyping half a dozen wireless prototypes involving more than just two Arduinos, the wiring mistakes and associated debugging grew more time consuming. BridgeDuino facilitates rapid multi-node prototyping & testing

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