Plug-in touchscreen makes a Raspberry Pi tablet


by Graham Prophet @

Distributor element14 has a 7-in. Touchscreen Display for the Raspberry Pi, expanding the ecosystem of accessories, to enable users to create all-in-one integrated projects such as turning their Pi into a tablet, infotainment system or embedded project.

Compatible with Raspberry Pi 2, and Raspberry Pi 1 models B+ and A+*, the screen can be used to make ‘Internet of Things’ (IoT) devices with a visual display. Connect the Raspberry Pi, develop a Python script, and create home automation devices with touchscreen capability. A range of educational software and programs available on the Raspberry Pi will be touch enabled, making learning and programming easier.

Designed by the Raspberry Pi Foundation, the 800 × 480 display connects to the Raspberry Pi’s DSI display connector via an adapter board that handles power and signal conversion. Touchscreen drivers with support for 10-finger touch and an on-screen keyboard will be integrated into the latest Raspbian OS for full functionality without the need for a physical keyboard or mouse.

Plug-in touchscreen makes a Raspberry Pi tablet – [Link]

WifiPixels – ESP8266 Wifi unit combined with a NeoPixel


WifiPixels are a combination of a ESP8266 Wifi unit combined with a NeoPixel(Addressable RGB) LED ring all in one. Video here.

WifiPixels – ESP8266 Wifi unit combined with a NeoPixel – [Link]

A Indoor Ambient Quality Monitor


Davide Gironi has build an indoor ambient quality monitor based on :

SXAM (Spark to Xively AMbient quality monitor), is an ambient quality monitor that logs 4 environmental parameters to the and display the ambient status by using for RGB leds.

SXAM logs: Humidity, Temperature, Ambient noise, Brightness, Note: is now

A Indoor Ambient Quality Monitor – [Link]

LimiFrog – Ultra-compact prototyping. For IoT and much more.


Program it to invent smart objects. For IoT, robots, wearables, your bright ideas. With sensors, strong MCU, bluetooth, oled & more.

LimiFrog — Ultra-compact prototyping. For IoT and much more. – [Link]

OscilloPhone: Use your Smartphone as an Oscilloscope / Signal Generator


by loboat @

Oscilloscopes and Signal Generators are two essential electronics devices to create and test electronic circuits. Unfortunately, these devices are very expensives for students starting electronics, or makers who want use electronic circuits in their creations just once…

The idea of my project is to rethink your smartphone as a portable, powerful and secured platform, able to simulate an oscilloscope and a signal generator for your electronic circuits.
Here, your phone isn’t just an accessorize or an ordinairy remote control : it becomes the center of the project, and a tool to help you create better things in the future.

OscilloPhone: Use your Smartphone as an Oscilloscope / Signal Generator – [Link]

How to Make Two ESP8266 Talk


Rui Santos shows us how to make two ESP8266 to talk:

In this project you’re going to make two ESP8266 talk with each other.

How it works? You’re going to set one ESP as an Access Point (Server) and another ESP as a Station (Client). Then they’ll establish a wireless communication and the Client sends a message to the Server saying “Hello World!”.

How to Make Two ESP8266 Talk – [Link]

Contactless payment ring – A tutorial on NFC antenna coil design

Jatinder has tipped us with this latest post. He writes:

 I have a done a video about a contactless payment (NFC) ring that I have made. The video talks about NFC antenna coil design and how I used the concepts to make the wearable ring.

Contactless payment ring – A tutorial on NFC antenna coil design – [Link]

Dekatron as Internet speed indicator

IMG_0182 has build a interner speed indicator based on a Dekatron tube, the result is great.

As most electronic engineers and hobbyists do, I have a great respect for the earlier ways of controlling electrons, before it was found out that silicon could be used to miniaturize everything a thousandfold. It is amazing that things like a vacuum, a glow wire and a bunch of strange-looking metal bits can actually do useful stuff. The amazing-ness of it all gets even better if there are visuals involved: while vacuum tubes only have the faint glow of the heater, tubes filled with neon are more interesting because they can be used to display stuff. Nixie tubes are a prime example of those.

Dekatron as Internet speed indicator – [Link]

DIY Apple Clock


by TSJWang @

OK so there’s no such thing as the Apple Clock.
However, you can make your own retro-style bubble display clock in an Apple earbuds case.

I’m going to show you how to do that just sit tight.

DIY Apple Clock – [Link]

650V, 100A GaN transistors on show


by Graham Prophet @

GaN Systems (Ottawa, Canada) is to display its GS66540C 650V 100A high current GaN power transistors for the first time at the 17th Conference on Power Electronics and Applications, EPE’15 – ECCE Europe (CERN, Geneva, September 8th – 10th )

The GS66540C (the picture is of a prior, lower-current part) high current power devices will be revealed for the first time. Part of the company’s family of 650V gallium nitride power transistors based on its proprietary Island Technology, these high density devices achieve extremely efficient power conversion with fast switching rates of >100V/nsec and ultra-low thermal losses. The GS66540C is supplied in an evolved form of GaNPX packaging specially developed for higher operating currents, providing lower inductance and greater surface mount mechanical robustness required by power modules for the industrial and automotive markets. The near-chipscale parts have no wirebonds and offer step-change improvements in switching and conduction performance over traditional silicon MOSFETs and IGBTs. Parts are, the company says, being designed in to solar, industrial and automotive applications as global manufacturers race to use the power of GaN to secure competitive advantage.

650V, 100A GaN transistors on show – [Link]