Raspberry Pi Internet Weather Station

The RPi Internet Weather Station project displays the weather information such as temperature, humidity and successive weather forecast.

The 4DPi-35-II is a 3.5″ 480×320 Primary Display for the Raspberry Pi, which plugs directly on top of a Raspberry Pi and displays the primary output which is normally sent to the HDMI or Composite output. It features an integrated Resistive Touch panel, enabling the 4DPi-35-II to function with the Raspberry Pi without the need for a mouse.

Raspberry Pi Internet Weather Station – [Link]

How to reduce Arduino Uno power usage by 95%

Patrick Fenner @ deferredprocrastination.co.uk shows us how to reduce the power consumption of Arduino UNO. He achieved that by modifying the following parts.

To reduce the overall power usage of the Arduino UNO board significantly:

  • replace the linear regulator with a DC-DC converter,
  • adjust the USB-to-Serial circuit so it’s only powered from the USB port,
  • cut out (or desolder) the always-on LED’s on the board,
  • use the processor sleep mode.

How to reduce Arduino Uno power usage by 95% – [Link]

Instrumentation Amplifier For Pressure Sensor

General purpose differential amplifier project has been designed for various pressure sensor amplifier applications. Circuit provided with multiple resistors, capacitors, dual sensor options and 4 pin Header connector to interface other external sensors. Schematic is an example from NXP application AN1318 Figure 2.

The most popular silicon pressure sensors are piezo-resistive bridges that produce a differential output.

Voltage output is in response to pressure applied to a thin silicon diaphragm. Output voltage for these sensors is generally 25 to 50 mV full scales. Interface to microcomputers, therefore, generally involves gaining up the relatively small output voltage, performing a differential to single ended conversion, and scaling the analog signal into a range appropriate for analog to digital conversion.

Instrumentation Amplifier For Pressure Sensor – [Link]

8×8 pixel Time-of-Flight sensor is only 2.65×2.7mm

Swiss company Espros has completed its cwTOF imager family with the epc611, its smallest Time-of-Flight sensor to date, measuring only 2.65×2.7mm and delivering a 8×8 pixel field. by Julien Happich @ eenewseurope.com:

Sampling now and in volume production at TSMC, the chip can either be used as an 8×8 pixel imager for simple gesture recognition, door protection, or presence detection near machines, or as a fast range finder for simultaneous localization and mapping (SLAM) applications with rotating sensors.

8×8 pixel Time-of-Flight sensor is only 2.65×2.7mm – [Link]

Solar supercapacitor creates electricity and hydrogen fuel on the cheap

A replica of the UCLA device, which can produce both electricity and hydrogen

Researchers in University of California, Los Angeles (UCLA) made a device that may help bring hydrogen powered vehicles to the masses. This device uses sunlight to produce both hydrogen and electricity at the same time. The UCLA device is a hybrid unit that combines a supercapacitor with a hydrogen fuel cell, and runs on solar power. [via]

People need fuel to run their vehicles and electricity to run their devices,” says Richard Kaner, senior author of the study. “Now you can make both fuel and electricity with a single device.

Along with the usual positive and negative electrodes, the device has a third electrode that can either store energy electrically or use it to split water into its constituent hydrogen and oxygen atoms – a process called water electrolysis.

Google offers AI vision kit for Raspberry Pi owners

Google’s Vision Kit lets you build your own computer-vision system for $45 along with your own Raspberry Pi.

The company has now launched the AIY (AI yourself) Vision Kit that lets you turn Raspberry Pi equipment into an image-recognition device. The kit is powered by Google’s TensorFlow machine-learning models and will soon gain an accompanying Android app for controlling the device.

According to Google, Vision Kit features “on-device neural network acceleration”, allowing a Raspberry Pi-based box to do computer vision without processing in the cloud. The AIY Voice Kit relies on the cloud for natural-language processing.

Google offers AI vision kit for Raspberry Pi owners – [Link]

Newport Family of SBC Based on the Cavium Octeon 64-bit ARMv8 Processor

Gateworks Corporation announces the Newport Family of single board computers featuring eight standard models. These models range in size and features to provide a comprehensive and flexible solution to customers requiring a high performance, feature-rich embedded networking board. The Newport Family is based upon the Cavium Octeon TX 64-bit ARMv8 SoC, which has been designed specifically for high performance networking applications. The Newport Family of boards offers processors ranging from an 800MHz Dual Core up to a 1.5GHz Quad Core. The Octeon TX features large L1/L2 caches, rich I/O with support for the latest standards (PCIe Gen 3, SATA3.0, USB 3.0, DDR4), security and networking acceleration engines, hardware virtualization, low power (<4W) and IPSec performance of 8Gbps with only 2-cores. (more…)

Pokit – Multimeter, Oscilloscope & Logger in your pocket

Pokit – Multimeter, Oscilloscope & Logger in your pocket – [Link]

IRduino – Arduino-compatible USB infrared receiver

IRduino is an open source, programmable, Arduino-compatible USB infrared receiver that gives new life to old remote controls.

IRduino is a peripheral device that allows almost any IR signal to be translated into commands. It works on many platforms, including PC, Mac, Raspberry Pi, and even some cell phones. The infrared device can be anything from an old TV remote, to an IR mouse or keyboard.

IRduino – Arduino-compatible USB infrared receiver – [Link]

7 Undiscovered Add-On Boards For Your Raspberry Pi

averagemanvsraspberrypi.com has a list of 7 add-on boards that you may not be aware of. They write:

It’s been a couple of weeks since I returned to the Pi, and I’m already seeing people using the same old default add-on boards all over the internet. Don’t get me wrong – they’re popular because they’re good quality, useful and affordable – but they don’t excite me.

What does excite me is when I find small batches of weird little wonders lurking in the dark, dingy alleyways of the internet. Odd little boards from different places, in different colours with different features.

They’re not mass-market, they’re not easy to find, and they’re usually not as cheap as mainstream options – but they are different – and that makes them interesting.

7 Undiscovered Add-On Boards For Your Raspberry Pi – [Link]