New 1.44″ intelligent displays from 4D Systems already in stock

uLCD-14 replaces the previous model uLCD-144. The new type remains a full software compatibility, that’s why if you already have an application designed for uLCD-144, you can use them without any modification.

The only main change is the connector, instead of the original 1×9 THT pin header a new 2×5 SMD pin header is used with an added +5V output through a protection schottky diode. The new uLCD-14 module, also marked as uLCD-144-G2, features the same excellent properties like other members of uLCD family.

Properties of the module are mainly determined by the used Goldelox chip, able to work in a slave, as well as stand-alone mode. It is also possible to use the 4D-Visi graphic development environment, considerably simplifying and accelerating a development of graphic applications. A detailed description of features common to all 4D Systems modules you can find in our article. Detailed information will provide you the uLCD-144-G2 datasheet.

New 1.44“ intelligent displays from 4D Systems already in stock – [Link]

B9Creator – A High Resolution 3D Printer

A 3D Printer that delivers the resolution you crave. Michael Joyce writes:

Right from the beginning I wanted the B9Creator to be different. Anodized aluminum construction, stainless steel hardware, many thoughtful features that enhance normal operation… all these things set the B9Creator apart from the DIY 3D Printer herd. But when it comes to printing complex, detailed and fragile objects, this is where the B9Creator really shines bright!

B9Creator – A High Resolution 3D Printer – [Link]

2 x Free SPI Flash programmer PCBs – leave a comment

vane @ gives out 2 x free PCB for his  SPI Flash programmer. Please leave a comment on this post and we will select two randoms to give out the PCBs.

2 x Free SPI Flash programmer PCBs – leave a comment – [Link]


LTC3411 Synchronous Step-Down DC/DC Converter

LTC3411 from Linear Technology, a 1.25A 4MHz Synchronous Step-Down DC/DC converter. These circuits are really very simple to design, consider a few things and it functioned great.

LTC3411 Synchronous Step-Down DC/DC Converter – [Link]

Power- line cords in various versions directly from our stock

In our range of standard stock types it is also possible to find basic components for reliable power supply from the 230V mains – the power cords.

2-conductor and 3-conductor types, terminated by cable end-sleeves or by some of commonly used connectors. You can use them for a power supply of any industrial devices but even for computers, monitors, notebooks and other. For applications, where it is desirable to use a white version (for example medical devices), you can choose from 3 types of 3-conductor cords in length of 2, 3 and 5m. A double power cord (Y) can be a solution if you´re facing a lack of connection points – sockets, and also in some special cases (when solving ground loops between 2 devices etc.).

Thanks to a purchase in a big amount, we´re able to offer you for example the 3-conductor cord with a length of 3m for an exceptional price. This type, as well as other ones connected according to a French norm, are fully usable in the most of EU countries. It is only necessary to realize, that the brown conductor responds to the left plug (at the front view) and the blue conductor responds to the left plug. In case of interest about non-standard types, we´re able to provide you with many other versions according to your specifications.

Power- line cords in various versions directly from our stock – [Link]


Researchers grow Biological Hard Drive from Bacteria

Researchers at the University of Leeds have used a type of bacterium which ‘eats’ iron to create a surface of magnets, similar to those found in traditional hard drives, and wiring. As the bacterium ingests the iron it creates tiny magnets within itself. The team has also begun to understand how the proteins inside these bacteria collect, shape and position these “nanomagnets” inside their cells and can now replicate this behavior outside the bacteria. Using this knowledge the team hopes to develop a ‘bottom-up’ approach for creating cheaper, more environmentally-friendly electronics of the future.

The magnetic array was created using a protein which creates perfect nanocrystals of magnetite inside the bacterium Magnetospirilllum magneticum. In a process akin to potato-printing on a much smaller scale, this protein is attached to a gold surface in a checkerboard pattern and placed in a solution containing iron. At a temperature of 80°C, similarly-sized crystals of magnetite form on the sections of the surface covered by the protein. The researchers are now working to reduce the size of these islands of magnets, in order to make arrays of single nanomagnets. They also plan to vary the magnetic materials that this protein can control. These next steps would allow each of these nanomagnets to hold one bit of information allowing the construction of better hard drives. [via]

Researchers grow Biological Hard Drive from Bacteria – [Link]

CMOS Transceiver hits 7 Gbps in 60 GHz Band

More and more data-intensive applications are running on modern wireless consumer electronic products, and communication channels below 10 GHz, such as WLAN, are confronted with spectrum scarcity. Wireless system designers are therefore compelled to explore higher frequency bands, such as the unlicensed 60 GHz band. This band is available throughout the world and allows multi-Gbps wireless communication over short distances. However, the cost, footprint and power consumption must be drastically reduced to enable deployment of 60 GHz wireless communication technology in portable mass-market products.

An important step towards the deployment of 60 GHz technology is the new prototype transceiver front-end IC developed by Imec and Panasonic that achieves a 7 Gbps data rate over short distances in the four channels specified by the IEEE 802.11ad standard with QAM16 modulation and an error vector management figure better than -17 dB. The transmitter signal path, consisting of a power amplifier and a mixer, consumes 90 mW with 10.2 dBm OP1dB. The receiver signal path, consisting of a low-noise amplifier and a mixer, consumes 35 mW and has a noise figure of 5.5 dB and 30 dB gain. Electrostatic discharge robustness is over 4 kV with a human body model. The compact 0.7 mm³ core area makes the transceiver front-end especially suitable for use in phased arrays. The small area is achieved by using lumped components and very compact millimeter-wave CMOS layout methods. [via]

CMOS Transceiver hits 7 Gbps in 60 GHz Band – [Link]

Building A Robot: Motor Control

chris @ writes:

Since we now have a beautiful robotic chassis, we’re ready to continue our Building A Robot series, and get serious with some motor control. This second part of building a robot is perhaps the most crucial as it will define what type of control we will have over the motors. Ideally, we want a simple method for controlling the motors so that our software is free to do other things.

In this article we will move forward with the Building A Robot series by adding the electronics necessary to control the speed and direction of both motors on the robotic chassis, which we developed in the previous article, Part 1: The Chassis. The two main additions in this portion of the project are a microcontroller and a motor controller IC.

Building A Robot: Motor Control – [Link]

Digital Magic 8 Ball writes:

I remember I used to have a magic 8 ball key-chain as a kid. I loved asking it the stupidest questions and seeing it magically divine the answer. Either that or it just repeatedly responded with an anti-climatic ask again later. One day the magic just dried up … literally, the purple fluid in the cavity evaporated! Randomly remembering this device, I decided on the spur of the moment, after learning how to seed and use the rand() function in the standard c library, to make my very own digital magic 8 ball (which would be impervious to drying up, but still vulnerable to releasing its magic smoke).

Digital Magic 8 Ball – [Link]


The Poor Man's Battery Tab Welder writes:

Over the past few years, I’ve built up a few battery packs for myself and for other people. Most of them worked fine – in fact, one of the first packs I built over five years ago is still in service, working fine in a torch in the bottom of my cupboard.

The big problem with soldering to batteries is that you tend to damage the plastic separator, and the cell seals. This – as you might guess – is not a Good Thing™. In some cases, solder can splatter over the cell’s pressure relief vent. There’s a reason the datasheets make a big fuss about the vent – in an overpressure situation, the vent is used to release the excess pressure in the cell. Needless to say, blocking the vent with solder is never a good plan, unless you’re trying to get a Darwin Award, or you happen to enjoy watching your battery pack undergoing rapid, uncontrolled self-disassembly.

In industry, resistance welding is used instead of soldering. Not only are the welded joints smaller than solder blobs, but they cause less damage to the cell. The only problem is the cost of resistance welding equipment. A low-end resistance welding machine can cost upwards of GB 2,000.

The Poor Man’s Battery Tab Welder – [Link]