Smart Plug with Esp8266, Attiny 85 & PIR Sensor


by Armtronix:

The Wifi Arduino 85 is a small board with ESP8266 -01 module, Attiny85 micro controller and a relay. It Also has and additional header for connecting an external relay or to connect sensors like PIR, IR etc depending on your application. If you are a tinkerer you will also be able to connect a HC-05/06 Bluetooth module and convert this board to a Bluetooth Arduino 85 board.

Smart Plug with Esp8266, Attiny 85 & PIR Sensor – [Link]

The RasPiO Duino



After a successful funding campaign on Kickstarter earlier this year the low-cost RasPiO Duino board is now in production and available to purchase. The RasPiO Duino is a small development board with similar functionality to an Arduino Uno. Once it is plugged onto a Raspberry Pi the system forms a complete low-cost Arduino development environment allowing programs to be developed and loaded to the RasPiO Duino. The board can then be unplugged to function independently.

It can also be used to operate interactively with the RPi. The RPi’s GPIO ports are broken out on the board as well. A 72-point prototyping area is provided with GND, 3V3 and 5V rails to facilitate the addition of custom circuitry.

The RasPiO Duino – [Link]

Geiger–Müller counter with three STS-5 lamps


Bob @

The Geiger–Müller counter is a relatively simple tool to measure ionizing radiation. This construction of the Geiger–Müller consist of three (instead of one as usually) soviet STS-5 lamp to increase sensitivity. It’s important for measurements of natural sources of (low) radiation like soil, rocks (an article about my trip with Geiger–Müller counter on Śnieżka mountain). I have also in plans building my home radiometric station (it would be part of part of a weather station) connected to the web, so I get the data wherever I am.

Geiger–Müller counter with three STS-5 lamps – [Link]

Industry’s Most Sensitive MEMS Mic


by R. Colin Johnson @

PORTLAND, Ore. — In its rush to get to market “while the iron is hot,” Vesper Technologies Inc. (Boston) has announced what it still claims is the industry’s highest signal-to-ratio (SNR) for a high-definition (HD) microelectromechanical system (MEMS) microphone, even though it is scaled back to 68dB rather than the astounding 70dB SNR MEMS mic they previously promised.

“Our roadmap now calls for the 70dB version in 2016, followed by an ultra-miniature, low-power 72dB model in 2017 and a 75dB signal-to-noise ratio model by 2018,” Vesper Chief Executive Officer Matt Crowley told EE Times. “Even at 68dB, our current model VM101 almost doubles the performance compared to current high-end 65 dB SNR capacitive MEMS microphones.”

Industry’s Most Sensitive MEMS Mic – [Link]

IR remote tester


Who never had the need to test a TV or DVD remote?

I have several times. My favorite technique was to take my mobile phone and with the camera pointed at the infrared emitter look for a flashing little purple light. The mobile phone technique is an way for testing the remote but still i decided to make a small circuit just to test the remotes.

IR remote tester – [Link]


High quality bezel will provide professional look to your displays


If a production of a professional bezel is over above your possibilities, leave it to us.

Also can be added, that even in case you have a possibility to produce a suitable bezel, it can easily happen (especially at smaller batches) that it simply isn´t worth it. Design, prototyping,… all this costs something. On the other hand we have here a ready-made solution with true brass bushings and precisely designed spring clips. The result is an immediately usable bezel, while it´s only necessary to make a simple cut-out into the front panel of the device. There´s no need to drill mounting hols to exactly defined positions or so. We talk about 4D Bezel-s. Novelty in our stock offer are bezels for 7“ displays uLCD70. Bezels are available in a black and white version. In our standard offer can also be found bezels for 3,2“ and 4,3“ displays from company 4D Systems.Further details necessary for a trouble-free usage in a target device will provide you the 4D-Bezel-70 datasheet as well as other ones at particular types.

High quality bezel will provide professional look to your displays – [Link]

Simple Distance Measuring Device


by Samuel_Alexander @

In this project we are going to learn how to use the HC-SR04 PING))) ultrasonic sensor to measure distance. This sensor is also often used on robots to detect obstacles.

Simple Distance Measuring Device – [Link]

TI introduces world’s first multichannel inductance-to-digital converters

TI introduces world's first multichannel inductance-to-digital converters with four new devices in the LDC1614 family (PRNewsFoto/Texas Instruments)
TI introduces world’s first multichannel inductance-to-digital converters with four new devices in the LDC1614 family (PRNewsFoto/Texas Instruments)

Texas Instruments (TI) announced the world’s first multichannel inductance-to-digital converters (LDCs). The four new devices in the LDC1614 family expand the innovative LDC portfolio, a data converter category that TI first introduced in 2013. The devices offer two or four matched channels and up to 28-bit resolution in a single integrated circuit (IC).

The combination of precision and multichannel functionality will allow engineers to design high dynamic range position and motion sensing solutions with simpler system designs and reduced cost. Unlike other technologies, LDC-enabled inductive sensing employs low-cost, high-reliability inductors as sensors, which can be located remotely from the IC. By integrating up to four channels in a single IC, the LDC1614 family allows designers to distribute sensors throughout a system, while centralizing electronics on fewer printed circuit boards (PCBs). This can benefit precision linear or rotational sensing and metal detection in a variety of end equipment including white goods, printers, cameras and automotive infotainment consoles.

TI introduces world’s first multichannel inductance-to-digital converters – [Link]

LabNation SmartScope: unique multi-platform USB oscilloscope


The SmartScope designed by the young Belgian company LabNation is — to our knowledge — the only oscilloscope that works with all popular operating systems: Windows 7/8, Linux, OS X, iOS (jailbroken) and Android 4.0+. So the software can run on a standard PC or laptop, but also on a tablet or smartphone. The control interface is specifically designed to operate with touch-screen or mouse and is equipped with various software decoders (such as I2C and SPI) for decoding digital signals.

The Smart Scope hardware consists of a small metal housing (for good protection) with the front two full BNC connectors for analog inputs, and at the rear a 16-pin header which has 8 digital inputs for the logic analyzer. Four digital outputs and an output for the built-in arbitrary waveform generator (AWG) are available. The sampling frequency of the analog and digital inputs is 100 Msamples/s, the maximum data rate of the AWG is 50 Msamples/s.

LabNation SmartScope: unique multi-platform USB oscilloscope – [Link]