Archive for July, 2006

Neuronal control of prosthetic devices by a human with tetraplegia

Sunday, July 30th, 2006
Details of clinical trials utilising Cyberkinetics electrode arrays to record neuronal activity in the motor cortex and control a cursor, open and close a prosthetic hand, operate a robotic arm, and, most importantly, play Pong.

Neuronal ensemble control of prosthetic devices by a human with tetraplegia (Nature 442, 164-171)

Duck and chicken raise a family

Wednesday, July 26th, 2006

The birds started dating already last summer, after the duck accidentally drowned his mate during lovemaking. However, the duck didn’t spend much time in mourning before starting to date the hen instead.

Link (via BoingBoing)

“I Void Warranty” T-Shirts!

Tuesday, July 25th, 2006

Are you an engineer, inventor, tinkerer or merely a tad precocious with the screwdriver? Do you wonder what lurks beneath that anti-tamper sticker? Let the world know that you shouldn’t be left alone with brand new electronics, appliances or automobiles.

Guys is $16, and Girls $17, plus shipping. Available here.

If you’d like a variation on the above designs, let me know and I’ll do my best to accomodate you. And if there is sufficient Australian interest, I’ll order a large run and ship them via Aussie Post to keep the cost down.

Combined radio transciever and microcontroller in single chip

Sunday, July 23rd, 2006

Here is a very promising new device from ChipCon, the CC2510. It combines a 2.4GHz radio and 8051-based microcontroller into a tiny 36 pin 6×6mm package. The microcontroller is loaded with peripherals, including real time clock, two USARTS, an ADC and 21 pins of general IO. The only other major required component is a 26MHz crystal. It looks to be a great device for hobbyists, for robotics, home automation, or any microcontroller project where a wireless link is required.

While it’s not overly expensive, it is presently difficult to acquire in low quantities. In addition, inexpensive and user-friendly development tools like libraries and programmers have yet to materialise.

Nonetheless, hopefully with a little time this family of devices (see 1, 2) will make wireless connectivity cheap and easy for DIY projects. It’ll be all the more powerful when the 802.15.4/ZigBee protocol gains acceptance, facilitating ubiquitous mesh networks.

A New Approach

Saturday, July 22nd, 2006

It’s recently dawned on me that I’ve gone nine months without a blog post. There are two reasons for this. Foremost, being a full time student, and employed on the side, I have little free time. Secondly, I’m very self-conscious about what I write. Most blogs are bloated and trite. And that’s understandable — it takes a great deal of effort to contribute something worthwhile, to publish well-researched and succint repartee, analysis or even unadulterated news. Unless it’s on a light weight or construction-oriented subject, I’m rarely satisfied with what I write.

That leaves me in somewhat of a dilemma. No time to generate a continual stream of original content, yet unwilling to babble on about what I had for dinner or my personal reaction to popular current affairs. Meanwhile, this website lays idle, a waste of hosting fees.

So, I’m going to change my approach. The rationale being that I have certain niche areas of interest that expose me to things worth aggregating. Engineering, neuroscience, psychology, and so forth. Things that reflect upon what I study, what I build, and more generally the spoils of spending too much time on the internet.

In a practical sense, this means I’m going to focus less on my own writing and research, and more on reporting that of others. I hope in the coming months you find something of interest!