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7 Feb 2015

The design is small scale mobile robot. The robot has two wheels that optimizes direction control and rotation. It is simple and low cost compared to other robotic designs. It is accurate and reliable with three sensors, which accuracy can still be increased with additional sensor pair.

The circuit is comprised of an Arduino Uno microcontroller, which serves as the main board of the system. It handles the complete integration of the system. The distance sensors serves as the eyes of the robot, which are three pairs for accuracy and faster obstacle sensing. The motors drives the two wheels independently, each has its own wheel to drive. The transistors that is connected to the motor are used as a switch of the motor as the microcontroller releases the signal.

This simple design of mobile robot is helpful in order to developed our own version of mobile robot. It is an efficient and helpful concept in developing a robot that can roam around especially without the need of human control. It is suitable to different applications like gathering data, search and rescue, safety measures, and other related stuffs that needs support at a very rigid situation.

Basic Mobile Robot with Autotravel Configuration - [Link]

7 Feb 2015


by electro-labs.com:

Have you ever been curious about the power consumption of an appliance? For example did you wonder how much it will cost you to leave your television in standby mode whole night? Or did you want to learn how much change your refrigerator settings will make on your electric bill? If your answer is yes, you can use a wattmeter to measure the power consumption of a device. In this project we are building one.

This is an AC Watt Meter which can measure the real power consumption of a device connected to the 230Vrms/50Hz mains line. The PIC microcontroller collects the voltage and the current information with the help of ADCs and then calculates the RMS voltage of the mains line, RMS current drawn by the device and the resulting average power consumption. All these information is then displayed on the dot matrix LCD.

DIY Digital AC Watt Meter - [Link]

6 Feb 2015


Oscar Gonzalez writes:

The MicroGame is an experiment of making a custom portable platform for gamming compatible with Arduino. It’s based on a small monochrome 128×64 pixels OLED from Adafruit and a ATmega32U4 8-bits microcontroller running at 8MHz. All hardware design and game source code is writed from scratch by me and you can find all the files in my Github repository if you want to build your own. You can modify, share and make improvements as you like but do not forget to shoot me and email and show me your work!

MicroGame – Custom Arduino Compatible Gamming Platform - [Link]


6 Feb 2015


by SteveQuinn @ instructables.com:

For those of you who remember the eighties, this will no doubt bring back fond memories when every piece of audio equipment in the known universe was at the time equipped with a plethora of LEDs.

More specifically the ubiquitous Graphic Equaliser or ‘Graphic EQ’.

This Instructable is centred around the MSGEQ7 to create a simple 2 Channel Graphic EQ and documents my first, poor attempt at using the Arduino Uno R3, the Arduino development environment and coding in ‘C’ for well over a decade.

LED Graphic Equaliser from the 80s - [Link]

6 Feb 2015


by elektor.com:

ARM has unveiled the new ARM Cortex-A72 processor which they expect to be the standard SoC in mobile devices hitting the marketplace in 2016. Their claim is that it is the highest performing CPU technology available for developing mobile SoCs today. In target configurations, the Cortex-A72 processor is said to deliver CPU performance 50X greater than the leading smartphones from just five years ago.

The ARM premium mobile experience IP suite also offers a significant graphics upgrade offering users up to 4K120fps resolution. Alongside the Cortex-A72 processor is the new CoreLink CCI-500 interconnect and the new Mali-T880 GPU, ARM’s highest performing and most energy-efficient mobile GPU, along with Mali-V550 video and Mali-DP550 display processors. To further ease chip implementation, the suite also includes ARM POP IP for the leading-edge TSMC 16nm FinFET+ process.

New ARM Cortex-A72 - [Link]

6 Feb 2015


Photovoltaic cells output boosted with carbon. R. Colin Johnson @ eetimes.com:

PORTLAND, Ore. — Scientists have demonstrated a doubling of the number of electrons produced by carbon-based photovoltaic polymer potentially doubling the efficiency of any solar cell. The process called “singlet fission” produces “identical twin” electrons from a single photon, instead of the normal one, dramatically boosting the theoretical maximum output of solar cells. Instead of loosing energy to heat, an extra electron is produced by the process of applying a polymer solution to an existing solar cell.

“One of the challenges in improving the efficiency of solar cells is that a portion of the absorbed light energy is lost as heat,” lead scientist at Brookhaven National Labs, Matt Sfeir, told EE Times. “In singlet fission, one absorbed unit of light results in two units of electricity via a multiplication process rather than resulting in one unit of electricity and heat as would occur in a conventional cell.”

Print-On Polymer Multiplies Solar Output - [Link]

6 Feb 2015


by Steve Taranovich @ edn.com:

Linear Technology Corporation just announced another in its series of power management ICs for automotive usage, the LT8640, a 5A, 42V input capable synchronous step-down switching regulator. A unique Silent Switcher™ architecture, combined with spread spectrum frequency modulation, reduces EMI/EMC emissions by more than 25dB even with switching frequencies in excess of 2MHz, enabling it to easily pass the automotive CISPR25, Class 5 peak limits. This feature varies the clock with a triangular frequency modulation of +20%.

Silent Switcher with high efficiency and low EMI/EMC - [Link]

6 Feb 2015


by Colin Jeffrey @ gizmag.com:

Researchers from the University of Manchester and University of Sheffield have developed a new prototype semi-transparent, graphene-based LED device that could form the basis of flexible screens for use in the next-generation of mobile phones, tablets and televisions. The incredibly thin display was created using sandwiched “heterostructures”, is only 10-40 atoms thick and emits a sheet of light across its entire surface.

Flexible graphene-based LED clears the way for flexible displays - [Link]

6 Feb 2015


by Pieter @ piconomic.co.za:

If you can beg, steal or borrow an Atmel ISP programmer, then you can use the Arduino environment to develop on the Atmel AVR Atmega328P Scorpion Board. An Arduino on Scorpion Board guide, Optiboot bootloader and example sketches have been added.

If you own an Arduino Uno board, you can now try out the Piconomic FW Library risk free without abandoning the creature comforts of the Arduino environment. You can use the existing Optiboot bootloader to upload code. I have added a getting started guide for the Arduino Uno. There are examples, including a CLI (Command Line Interpreter) Application that creates a “Linux Shell”-like environment running on the Arduino Uno so that you can experiment with GPIO, ADC, I2C and SPI using only Terminal software (for example Tera Term)… it is really cool!

Piconomic FW Library 0.4.2 released - [Link]

5 Feb 2015


Raspberry Pi in a form of so called “compute” module provides all good features of this well-known microcomputer and lets you choose which peripherals to use.

Idea of the Raspberry (RPI) compute module is in a fact, that there are applications, where easy applicability of this microcomputer might be advantageous, but its dimensions (including connectors in original version) don´t allow it to you. For these cases, the new Raspberry compute module is suitable, what´s literally only the “computing module” itself, in a substantially more flexible form factor. Raspberry Compute gives allows designer to freely use only required peripherals, at minimal space requirements (dimensions only 67.6x30mm). The size comparison is illustrated in attached picture. The module can be easily connected to a target application through a usual DDR2 SODIMM connector, for example Attend 121A-52A00.

The Compute module contains the same „guts“ as Raspberry Pi (BCM2835 processor and 512MB RAM) as well as 4GB eMMC Flash memory (equivalent to an SD card in RPI). With this module. it´s possible to deploy full functionality of the BCM2835 chip and even more GPIO pins and interfaces than in a standard version. Detailed information will provide you the RPI Compute module datasheet. Upon order, there´s available the development kit RPI COMPUTE DEV KIT (containing the module, IO board, cables for camera and display, 5V power source and a USB cable).

Full performance of Raspberry is also available in a miniature form - [Link]





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