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2 May 2014

toshibastart

by phys.org:

Toshiba Corporation today announced that it has developed the world’s first 15-nanometer (nm) process technology, which will apply to 2-bit-per-cell 128-gigabit (16 gigabytes) NAND flash memories. Mass production with the new technology will start at the end of April at Fab 5 Yokkaichi Operations, Toshiba’s NAND flash fabrication facility (fab), replacing second generation 19 nm process technology, Toshiba’s previous flagship process. The second stage of Fab 5 is currently under construction, and the new technology will also be deployed there.

Toshiba starts mass production of world’s first 15nm NAND flash memories - [Link]

2 May 2014

By Tessel Renzenbrink:

David Hunt built himself a working mobile phone using a Raspberry Pi and off-the-shelf components. The main building parts are the $35 Adafruit Touchscreen interface and a $48 SIM900 GSM/GPRS module for making phone calls. In total the phone costs $158 to build.

PiPhone: Turning Your Pi into a Phone - [Link]

2 May 2014

texas

The controller, host and application with integrated (field programmable) Flash memory is contained in a 6 mm x 6 mm chip. The GPIOs support both analog and digital signals. TI anticipates the chip will be useful in the field of:

Smartphone-controlled applications:

  • Keyless entry using a Bluetooth Smart Ready smartphone or Bluetooth Smart key fob, either standalone or in conjunction with TI’s car access solutions
  • Lighting controls to deliver ambient, clustered and programmable LED lighting
  • Diagnostic information to help users understand engine warning lights
  • Services with iBeacon technology for fast discovery and easy pairing with in-car Bluetooth Smart technology

A Chip to Link your Smartphone and Automobile - [Link]

2 May 2014

FY81ISKHUHT1G99.MEDIUM

ASCAS @ instructables.com writes:

Control your Arduino with voice commands using an Android smartphone! Before we make a voice activated home automation system, we must first learn the basic principles of the experiment. This guide will let you command the Arduino using your Android smartphone and a HC-05 Bluetooth module.

The designer of the app did not include a sample code. I looked for alternatives in Google’s PlayStore but none was as good as the app that I’ve found. Luckily, I was able to figure it out although it took me a while to program it. Sorry IOS users, this app isn’t available in Apple’s app store :/

Voice Activated Arduino (Bluetooth + Android) - [Link]


2 May 2014

Digispark Pro - The tiny Arduino IDE ready, usb and mobile dev board and ecosystem – cheap enough to leave in any project! Wi-fi, BLE, and 25+ shields!

Serial over USB debugging, USB programmable, 14 i/o, SPI, I2C, UART, USB Device Emulation, Mobile Development Ready, Optional BT, BLE, Mesh, and Wi-Fi.

The super small, dirt cheap, always open source, Arduino compatible, USB (and Mobile and Wireless!) development (and production) platform, and follow-up to the original Digispark.

Easier to use, more pins, more program space, more features, more reliable – supporting the entire existing Digispark ecosystem of 25+ shields and adding Wi-Fi, Bluetooth, BLE shields and more! Ready for all your projects – including mobile hardware development! All still super affordable!

The Digispark Pro Ecosystem is the cheapest, Arduino compatible development platform for Mobile and Wireless hardware development.

Digispark Pro – tiny, Arduino ready, mobile & usb dev board! - [Link]

2 May 2014

obr1517_1

Thanks to a 15-36V output voltage, it can be connected to almost every LED module and a stable output current of 1050 mA will take care for a reliable operation.

In fact, majority of features of a new a new LED driver (power supply) – LT40-36/1050 WP (1894661) were mentioned in a subject and a preface of this article. But not to be that brief, we can add, that the new LED driver features the same good properties like its familiar descried in the article – Friwo drivers not only drive your LEDs but even control them …. From the basic types it differs mainly by a water-tight design – by encapsulation in a resin, that´s why it also withstands operation in a humid or dusty environment. This version doesn´t have an external input, thus it operates only as “standalone”, in a “constant current, limited voltage” mode. Output voltage 15-36V means, that the LED driver should only supply such a module, whose forward voltage (Vf)at a given current is 15-36V, what in praxis means approx. 6-11 (12) white LEDs in series.

That´s why LT40-36/1050 operates as a power supply, whose open voltage (without a load) is 36V. This voltage remains constant up to 1000 mA current drawing and then the voltage drops down to 15V when a current reaches 1050 mA. This ensures a constant current, i.e. if we for example connect a LED module with Vf=24V, the driver will source 1050 mA current (at 24V). LT40-36/1050WP shouldn´t be used to supply modules with a Vf lower than 15V. In such case, the types handling lower voltages are suitable, for example LT10-16/700 or LT20-28/700. If we wish to reach a maximum power from a given LED driver, it´s naturally beneficial to use a LED module with a Vf on an upper level of an output voltage of a given LED driver (33-36V in this case).

Detailed information will provide you the LT series overview and datasheets at particular types.

LED driver Friwo LT40-36/1050 can be mounted even under an eaves - [Link]

2 May 2014

aquarium_light_timer_1024x

by Kalle Hyvönen:

I bought a small aquarium (54l) as an impulse buy and I needed some lights for it, so naturally I wanted to use LEDs. I also needed a timer for the lights. I also wanted the lights to fade in and out when they were going on or off as a cool effect.

I ordered four Cree XP-G R5 LEDs (cool white, apparently too warm of a light will cause algae growth) and a one amp (switching) constant current supply (with PWM support) from LED-tech.de. I had some Maxim DS3234 real-time clocks with a serial bus (SPI) which looked easy to implement so I decided to use one. I also had one spare Arduino board so that was going to be my microcontroller of choice. I used a laptop power supply as the power source.

LED aquarium lighting with an Arduino based PWM timer - [Link]

1 May 2014

vfd-38

VFD Moduar Clock IV-4 6-digit  by akafugu.jp:

This new shield design for the VFD Modular Clock is a variant of the original IV-4 shield, but with 6 digits. IV-4 tubes are Russian 16-segment VFD tubes, and can display numerals and the letters A-Z.

We’ve also designed a completely new enclosure for the IV-4 6-digit shield. It uses 2mm semi-transparent blue acrylic, and is designed to give a low-profile rounded appearance.

Creating a 6-digit IV-4 shield without redesigning the base board presented a unique challenge: The HV5812 driver used to drive the VFD tubes has 20 channels. IV-4 tubes are 16 segment displays, 20 – 16 = 4, so in other words the HV5812 driver can only support 4 IV-4 tubes.

New Product – VFD Moduar Clock IV-4 6-digit - [Link]

1 May 2014

Inter-Integrated Circuit or I²C is a multimaster serial single-ended computer bus invented by Philips Semiconductor Division, today NXP Semiconductors. This technology is used in attaching low-speed peripherals to a motherboard, embedded system, mobile phones, or other digital electronic devices.

One family of devices under I2C is the Philips Semiconductors Gunning Transceiver Logic Translator Voltage Clamp (GTL-TVC), a family of bi-directional low-voltage translators, is designed in a BiCMOS process for protecting the sensitive I/Os on new advanced sub micron components. The GTL-TVC devices offer protection from over -voltage and electrostatic discharge applied by older legacy devices and translate the VIH and VOH switching levels.The GTL-TVC devices can also be used to interface between devices I/O’s operating at different voltage levels.

This circuit uses the GTL2010PW 10-bit bidirectional low-voltage translator which provides high-speed voltage translation with low ON-state resistance and minimal propagation delay. The device allows bidirectional voltage translations between 1.0 V and 5.0 V without use of a direction pin. This allows the use of different bus voltages on each source to drain channel so that a 1.5 V device can communicate with 2.5 V, 3.3 V or 5V devices without any additional protection. The circuit shows how the GTL2010 can be used in an application where two ASIC’s I2C ports (left side) operating at 1.5 V can interface to higher voltage devices (right side) operating at 3.3V and 5.0 V. One of the ASIC ports (MDDC on S1 & S2) only needs to interface with 5V I2C devices. The other ASIC port (MI2C on S3 & S4 and S5 & S6) needs to interface with both 3.3 V SMBus and 5.0 V I2C devices.

Components:

  • GTL2010PW 10-bit bidirectional low-voltage translator
  • 1KΩ General Purpose Resistors – 2 Units
  • 2.2KΩ General Purpose Resistors – 4 Units
  • 200KΩ General Purpose Resistor

1.5V I2C Bus to 3.3V SMBus and 5.0V I2C Bus - [Link]

1 May 2014

13519064604_8af097dd4d_c

Ioannis Kedros writes:

I just finish the assembly process of my latest super mini project! It’s nothing amazing… but its a very handy sensor module!
On board there are three commonly used sensors: SHT10, BMP085 and MPU6050. I was constantly using those ones over my last projects and I thought it will be a good idea to make a simple module with all of those. They are communicating over I2C and the module can accept voltages from 3V to 6V.

Sensor Stick - [Link]



 
 
 

 

 

 

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