I've been messing around with Bluetooth Low Energy on a few projects lately. There's some fun stuff out there, but like a lot of embedded stuff it can be a bit tricky in a non-Windows environment (I run Linux whenever I can.)
One module I've come across is the Laird Technologies BL-600 Series. The BL-600SA is a complete, FCC module certified, Bluetooth Low Energy systems-on-a-chip. It costs $13US in single quantity at Digikey.
Inside the metal can the BL-600SA is actually a Nordic nRF51822 Cortex M0 microcontroller with built in Bluetooth Low Energy, bundled with its supporting components and a chip antenna.
Misappropriating discount store LEDs to improve the illumination in my microscope.
"Sony Smartwatch now open-sourced"? "takes wearable tech into open-source territory"? It's a shame this is almost entirely untrue.
(Updated 21/6 with some info about the Bluetooth/FM chip.)
I've assembled a network installer image to install Debian 7.0 "Wheezy" on the GK802 "Android TV" Mini PC. This is intended for people who want to run the GK802 headless or semi-headless, for server or robotics applications.
Last update: 24 May, see details
Problem: You have a computer running Debian 7 wheezy (also Debian 8 jessie) with an encrypted root filesystem. At startup you'd like to be able to unlock the disk over ssh, maybe because it runs headless.
I bought this LG branded USB 2.0 Hub for $10 from PCDIY.
Seems to be an LG promotional item that PCDIY decided to resell. (I don't mind, it works properly in Linux unlike most cheap hubs.)
However, the form factor is kinda big and the LG logo is pretty bright.
Taking apart a very cheap USB to Ethernet adapter and pondering on the parts found inside.
Here are two USB to Ethernet adapters:
One of them is sold on ebay for $3.85 AU ($3.99 US), including postage to Australia. The other is sold at Apple Stores for $29.
At Make, Hack, Void we've had a Rep Rap Pro Huxley 3d printer since the beginning of the year.
Unfortunately we've also struggled with a couple of long-standing problems. Continue reading
Demo page with data from the last week in September
A few months ago, in the dead of Canberra winter, we discovered our flat had a mould problem. Insidious disgusting mould had crept in around our walls. Much scrubbing ensued.
This is a follow-up to the review I wrote last August of the Huawei Sonic U8650 $189AU Android smartphone.