Exar have announced the 5 mm square SP335 transceiver chip which supports RS-232, RS-485 and RS-422 serial standards. It is a single chip solution between the serial comms port and the UART or MCU allowing system designers to cater for multiple serial protocols over the same connector. The transceiver’s programmable end-of-line termination and multiple configuration modes allow all three protocols to be used interchangeably over the same cabling and connector without the need for additional switching components.
Built in protection tolerates direct shorts to DC or AC voltages as high as ±18 V and severe ESD events. The chip features a separate supply voltage for the logic interface pins, which can be as low as 1.65 V. This allows direct interface with low voltage UARTs and MCUs without the need for level shifters. It also supports data rates up to 20 Mb/s in RS-485/422 modes and 1 Mb/s in RS-232 mode and can be slew limited to 250 kb/s toggling a single control pin. With no inductors or magnetic components, the on-board charge pump generates the RS-232 bipolar voltage levels from a single supply (3.0 to 5.5 V) using just four external capacitors. [via]
Transceiver Chip Handles RS-232, RS-485 and RS-422 - [Link]
Adapters with an attribute “medical” can help you to meet stringent requirements for this segment.
If you produce a device with a supposal to be used in a hospital or in a medical segment in general, it´s naturally necessary that it must meet more stringent requirements, given for example by a 93/42/EEC directive about medical devices.
High reliability and a high isolation (primary/ secondary winding) belong to basic requirements. Adapters Friwo – medical meet these and also many other requirements and they also gained many international attests. In the Friwo portfolio can be found a wide range of various medical adapters with power of 3-30W, „desktop“ adapters with power of 12-150W and also „open frame“ modules with power of 65-250W.
In our stock a universal type GPP18M (1890856, FW7556M) can be found, with a 12V/1500 mA output. It features a constant voltage with a current limitation and a protection against continuous shortcut. Now we offer you a GPP18 Medic set containing a power source, AC Euro inlet adapter and an output DC connector 5,5/2,5/11,5mm for an exceptional price.
Should you be interested in a relatively bigger amount of these adapter in a different version (other mains inlet adaptor or other DC connector), we´ll certainly find a solution. Detailed information will provide you the Friwo_medical overview.
Do you produce devices for medical segment? - [Link]
Here is a very nice build of a LED heart that creates incredible animations. Check it out.
Today we present the perfect Valentine gadget: just shake it and it will turn on and crate incredible light animations. That will be cool for sure!
We know that, as it’s Valentine’s Day, looking at the device described in this post you’ll be inclined to think that this is the usual heart-shaped Valentine gadget: in reality this is something much cooler as it’s capable to create beautiful and complex light games. Is based on the smallest microcontroller manufactured by Atmel: the ATtiny85.
Hack your Valentine with HeartThrob - [Link]
Element14/Newark has announced the RIoTboard (Revolutionizing the Internet of Things). It is an open-source, single board development platform to support the development of netbooks , nettops, mobile internet devices, PDAs, portable media players (PMP) with HD video capability, portable navigation devices (PNDs), industrial control and test and measurement (T&M) and single board computers (SBCs). [via]
The RIoTboard specs in brief:
- SoC – Freescale i.MX 6Solo ARM Cortex A9 MPCore Processor @ 1 GHz with Vivante GC880 and GC320 GPUs for 3D & 2D graphics, and HD video processing unit.
- System Memory – 1GB DDR3 RAM
- Storage – 4GB eMMC, microSD and SD card slots
- Video O/P – HDMI, LVDS, and parallel RGB interfaces
- Audio I/O – Analog headphone/microphone, 3.5mm audio jack
- Networking – 10/100/1000M Ethernet
- USB – 1x mini USB 2.0 OTG, 4x USB 2.0 Host, 1x mini USB (OpenSDA)
- Camera – CSI interface with support for CCD and CMOS cameras,
- 1 Gbps MIPI Lane
- Debug – 3-pin UART TTL level, 10-pin JTAG, OpenSDA
- Expansion connector – 40-pin header including 3x UART, 2x I2C, 2x SPI, 3x PWM, 10x GPIOs
- Miscellaneous IOs – 4x LEDs (Power, Open SDA and 2x user-defined), reset button, boot configuration interface
- Power Supply – 5V/4A
- Dimensions – 120 mm x 75 mm
Android & GNU/Linux Development Board - [Link]
pinomelean @ instructables.com writes:
There are many ways to make your own homemade PCB’s, They all work, but some better than other, some faster than other, ones are cheap and others expensive….
After several attempts, i found the way of making PCB’s, wich is the cheapest, easiest and fastest for me.
I hope this instructable will help you to decide what’s the best method for you, because there are so many to choose.
PCB making guide - [Link]
Home built Arduino powered SMD Reflow oven based on a toaster oven.
Home built SMD Reflow Oven - [Link]
An in depth tutorial showing how to solder surface mount parts. Covering the tools, techniques and tips that can really help learn how to properly solder electronics! If you are new to soldering this video should have you soldering SMD components in no time!
With just a bit of pratice it becomes much easier to solder SMD then through hole soldering. As shown in the video the main key is lots of flux, but be sure to properly clean your work once you are finished soldering it.
HowTo SMD Soldering - [Link]
Kevin Rye writes about his Mini 7-Segment clock V2 project:
Now for the moment of truth. I crossed my fingers and connected a battery pack. Woo hoo! It works! I love that feeling you get when you spend weeks working on a project, it all comes together in the end and it just works. With the electronics working, it was time to put it in the enclosure. I cut the end off a SparkFun 5V DC power supply and soldered on a 2-pin Dupont connector. I then secured everything with a little heat shrink tubing. I then took the acrylic panels that I designed and had laser-cut from Ponoko and secured them to the clock via some screws and standoffs.
It looks amazing! I’m really happy with the way that it came out. I also really like the “kelly” green segments on this display.
Mini 7-Segment clock V2 - [Link]
Well-proven embedded mini PC with Windows CE – BEGA220 are now available in the IP66 protection class.
Bega220 as a universal microcomputer with an OS and a 7“ touch display already found its place in many applications. Now company Bolymin launched on the market an improved version resistant to dust and water (IP66) – the BE220C module. IP66 resistance applies to a front side and a bezel, what´s in the vast majority cases fully sufficient, because in praxis the module is always installed into a target device.
BE220C maintains all features of the Bega220 series. Functionality, interfaces and pinout of a communication protocol are the same. BE220C is supplied with a cable for connection to a communication connector on a bottom side of the module and also with a USB reduction (for connection of a keyboard or a mouse). The module should be powered by a 12V/1-1,2A adapter with a 5,5/2,5 mm DC connector. Also supplied is the CD with a user manual, software development kit (SDK) and code examples.
BE220C can be used (similarly like Bega220) for control of any devices or processes while maintaining an advantage of an easy programming in the Windows environment and compatibility with widely available software for a PC.
BE220 – intelligent embedded platform suitable even for a harsh environment! - [Link]
John Kicklighter writes:
Watching fireflies is one my most memorable childhood events. Every summer, I would look forward to watching fireflies dance with their seemingly random blinks. I marveled at how a living creature could produce light all on its own. Even today as I share this experience with my children, I look forward to each season of fireflies.
TinyGlo was made to continue the experience of watching fireflies well after the firefly season has ended. Instead of having to wait another year to see them again, you can now bring the firefly like light show into your home and have a similar memorizing light show every evening.
TinyGlo – Your own firefly light show anytime - [Link]