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Well, let's start with the line you added to GRUB. "init=/bin/bash" means the kernel will load the shell interpreter instead of the regular service management system when it has finished initializing the hardware. This has a few implications, such as network not being set up or tty features...

No, not really. I just wanted to use the Arduino bootloader for easy hacking which unfortunately limits our options quite a bit. Bluetooth programming might be an option, but then there's a risk of bricking the device unless we implement a failsafe in the bootloader. It could be done, but I...

Not with NeoPixels, the combined consumption of all three LEDs exceeds the maximum pin load on an ATMega32U4. However the beauty of WS2812 LED modules is that we don't need to do so since they have 4 pins; VCC, GND, DIN and DOUT. DIN and DOUT are the actual control and VCC + GND only powers the...

Don't worry, neither did I. English isn't my native language so I guess mistakes like this are bound to happen sometimes. I updated the first post with a new version. There's a new feature for pulsing colors, useful for things that require immediate action (phone calls etc). You can initiate...

I added this option to the poll. I assume your vote is better reflected now?

Well, the current parts list: Price: Part: $ 34.95 SparkFun FioV3 $ 3.95 SparkFun Breadboard Mini $ 8.95 SparkFun LiPo Battery 1000mAh $ 5.95 Adafruit NeoPixel Stick $ 22.50 Adadruit Bluefruit EZ-Link $ 7.95 Adadruit Premium Jumper Wires 150mm $ 84.25 Total This could instantly be reduced...

Here comes some photos... This is how huge the thing is: Acceptable for a proof of concept, then again not for much else. Here I am trying to capture the LEDs: Doesn't really say much more than how bright these things are even though I caught it near the end of the fade. When I used the...

This project came out of a few requests in an official news thread for a small device that could tell them when something happened on their Pyra. The general idea was something attached to your arm or a necklace with an LED and a Bluetooth interface. Basically I saw a chance to help through...

I must have misunderstood something, I thought we were talking about driving the vibrator directly from the CPU pin. Also yeah, more or less a transistor should do the job but to me an extra transistor qualifies as a circuit. An extremely simple one, but still. More to the point, I do realize...

Here we go, a quick base ready for adaption to your Arduino variant of choice: http://pastebin.com/p0hFXzTX . It's heavily commented so porting it to pretty much any Arduino based device should only require very basic coding skills. Maybe even the not-quite-Arduino-compatible boards like the...

I realize now that I meant the SparkFun LillyPad, not Adafruit Gemma. I'll put something together tonight and publish the source, however it will be based on the FioV3 (different size and pinout, but same basic design).

The arduino bluetooth thingy sounds easy enough, AFAIK Adafruit has a variant of it called "Gemma" with a LiPo charger/power circuit on board. Attach a neopixel ring and an EZ-Link module and you're there. A few lines of code and you have a serial bluetooth link to 16 individually controllable...

On the topic of vibration, I've dealt with home repairs of automotive electronics damaged by vibrations and it only seems to affect the connectors and heavier components. Also, through hole components seem to be much more likely to suffer from vibration damage. In the Pyra you would have a much...