The PicoBuck is a small low-cost constant-current LED driver capable of driving an RGB LED at up to 0.6A.
Now available from SparkFun Electronics!
The BeagleBone Black is an ARM-based device and doesn’t have ACPI support like most x86 systems. ACPI generally handles triggering shutdown and other power management events on x86 systems, so this functionality is missing on the BeagleBone. We can easily work around this problem with acpid, which provides an event handling script that is triggered when the power button is pressed. This is a simple way to add power button triggered shutdown without actually having ACPI support in the hardware.
This past winter I designed and constructed a stereo vacuum tube amplifier based off of the TubeLab SimpleSE design. Since many people asked about it at Maker Faire Detroit, I thought I would post a link to the build photos and some more details. Check out the build album below!
Thanks to everyone who came to check out our booth at Maker Faire Detroit this year! We will have some new posts on the blog about our new Luma lighting nodes, the Therm PID controller, and our thermal-printing photobooth in the next couple of days. Check back soon!
The SSD1306 is an OLED display made with SPI and I2C interfaces. With a simple Python library I adapted (a modified version of py-gaugette), it is easy to render text, images (from bitmaps of pretty much any format), progress bars, etc. This guide is a bit on the long side, but should walk you through the whole process.
The next iteration of the Luma node has been fabricated and assembled! The new node incorporates 3 10W RGBW LEDs, controlled with constant-current buck drivers and an ATTINY2313 microcontroller. Like all Luma nodes, up to 32 nodes can be daisy-chaned and controlled over RS485 with our open-source music synchronization software. Support for DMX is nearly complete, and will be ready for use after some additional testing!
Protofusion now hosts an official mirror of Arch Linux ARM! The mirror is hosted on Protofusion’s main server, which is colocated in Dearborn, MI. Mirror selection is geoip-based, so if you use Arch Linux ARM in the Michigan/Ohio/Midwest, you’re probably getting data from the Protofusion server. See the official mirrors page below for more information and a map of mirrors.
WebVirtMgr is an awesome simple web interface for managing virtual machines on Linux. Unfortunately the installation process is not simple at all, and the documentation is a bit lacking. There are also a few issues which are documented only in the bugtracker and not the documentation, as well as some Arch-specific issues. I’ve compiled all of the fixes I’ve discovered below, so hopefully your install process won’t be as painful as mine.
Updated 2/19/14 to reflect bugfixes and updates
Updated 3/11/14 for code and package updates
Commonly confused with RJ-45, the 8P8C connector is generally used for ethernet, telephone, and serial communication-type applications. The RJ-45 Breakout board breaks out an 8P8C connector into screw terminals for easy access while prototyping projects. The small form factor and mounting holes make it flexible enough to be placed almost anywhere, and the design can be fabricated for less than $5. Additionally, populating the optional LED/resistor combination provides a power indicator when voltage is applied across pins 1 and 0.
If you’re in the Detroit area this weekend, check out the Protofusion booth at Maker Faire Detroit! This year we will be indoors so all of our lighting will be much more visible. We’ll have our new Luma nodes up and running, which integrate an onboard 10W RGBW LED and heatsink. We will also be showing off our PicoBuck LED driver (soon available from SparkFun Electronics!) and our new MNL music synchronization node. Come check it out!