editor's blog archive
Subscribe Now

A Hardened Hub

There’s a new 9-axis motion sensor hub in town. Called SENtral, it’s a collaboration between PNI Sensors, known for geomagnetic sensors and fusion, and EM Microelectronics, a division of Swatch, whose focus is on ultra-low-power circuits. And it has its own twist.

Given EM’s focus, it should come as no surprise that this hub’s claim to fame is low power: they say it uses a small fraction of the power of the next competing microcontroller-based sensor hub … Read More → "A Hardened Hub"

One + One > Two

The latest, greatest mobile standards appear to be beastly affairs. Added to the old ones, and the number of algorithms that a poor cellphone – even a smart one – has to manage becomes pretty daunting.

And features like MIMO – various permutations and combinations of multiple antennae on the sending and receiving sides – make for an array of possible algorithms that CEVA says can only be managed through a software approach. That is, you load the software you need for the algorithm required at the moment rather than hard-code every possible variant, which would simply … Read More → "One + One > Two"

Monolithic Photonics

An interesting development was announced yesterday in the photonics world. In what appears to be a first of its kind, at least commercially, Skorpios announced a monolithic tunable laser – CMOS and 3/5 bits on the same chip. This eliminates the need to have the circuitry on one chip and then drive that into a separate chip that does the lasing, with obvious integration and efficiency benefits.

Skorpios does custom photonic work for its strategic investors, and in doing this process development, they have put together what amount to photonic standard cells; they talk about opening up an … Read More → "Monolithic Photonics"

Connecting CNTs to Metal

One of the things about CNTs acting as transistors is that the current flowing through them has to get into and out of the CNT from some other substance – typically metal. That junction, as it turns out, can have significant resistance. According to a paper done by a team from Georgia Tech and MIT (Songkil Kim et al), for a single-walled CNT (SWCNT) to connect to metal, there’s a quantum limit of around 65 kΩ.

Multi-walled CNTs (MWCNTs) can provide much lower-resistance connections, but how low depends on how you do it. Sputtering or … Read More → "Connecting CNTs to Metal"

featured blogs
Apr 6, 2020
My latest video blog is now available. This time I am looking at the use of dynamic memory in real-time embedded applications. You can see the video here or here: Future video blogs will continue to look at topics of interest to embedded software developers. Suggestions for t...
Apr 4, 2020
That metaphorical '€œboing'€ sound you hear, figuratively speaking, is a symbolical ball allegorically landing on Chewy'€™s side of the illusory net....
Apr 3, 2020
[From the last episode: We saw some of the mistakes that can cause programs to fail and to breach security and/or privacy.] We'€™ve seen how having more than one program or user resident as a '€œtenant'€ in a server in the cloud can create some challenges '€“ at leas...
Apr 2, 2020
There are many historical innovations that are the product of adversity, and the current situation is an extreme example.  While it is not the first time that humanity has faced a truly global challenge like the COVID-19 pandemic, this time the world is connected by tech...