The War On Christmas Lights

Posted December 24, 2008 by feurig & filed under reference.

War on Christmas Lights from Donald Delmar Davis on Vimeo. Last year I cast a series of led arrays for thing-a-day but hadnt wired them up. With this in mind I ordered some hc595s in the last group order but the snow canceled the meeting. I have been thinking about using the avr to drive… Read more »

Testing the Atmel Mega32U4

Posted December 2, 2008 by feurig & filed under Avr Development.

While I am wrangling with the appropriate board design, I needed to get started working with the underlying software so I ran up one of the six samples I was able to get from Cascade on a tqfp adapter from measure explorer. The AtMega32U4 http://www.atmel.com/dyn/products/product_card.asp?part_id=4317 is the midrange model in the atmel usb chipset. It… Read more »

To Boldly Go…

Posted by feurig & filed under Dorkbot.

I finally got a chance to wire up the first of my ATMega32U4 samples (see atmel doc7766). Like all of atmel’s usb chips it comes up as a bootloader. Now we get to go through the list of things that are probably broken (starting with dfu-programmer which I already know from fixing it for the at90usb647 is broken).

dfu-programmer

Focused Workshop, 30Nov08, Making Noise with the Arduino.

Posted November 19, 2008 by feurig & filed under Dorkbot.

http://farm4.static.flickr.com/3208/3043303516_20722aebfd.jpg

As a part of the ongoing Arduino Cult Induction workshop series, this month we will be focusing on sound.

In particular I will be going over creating sound using the Arduino’s built in Pulse Width Modulation (PWM) and Direct Digital Synthesis using resistive ladders. We will investigate using the Piezo element
as both a simple speaker and an input trigger. We will review the Musical Instrument Digital Interface (MIDI) from a hardware and software perspective, and look at a couple of useful integrated

Build Your own open source usb/midi gateway

Posted November 15, 2008 by feurig & filed under Dorkbot.

I am trying to digest this document.

http://www.usb.org/developers/devclass_docs/midi10.pdf

USB encapsulates midi data into 4 byte chunks and adds the notion of virtual cables.
The first byte in the packet is the cable number and something called the Code Index Number. The remaining 3 bytes are either midi or padding depending on the packet.

Most of the relevant midi status commands have a corresponding Code Index Number.

All Hail the blinkin lights!

Posted November 13, 2008 by feurig & filed under Dorkbot.

Wanna dorkboard but afraid of surface mount?

Brian Riley at Wulfden will sell you a stripped down dorkboard kit with the reset pullup resister and the programming jumper ALREADY SOLDERED! and for another 6 bucks you can build a nifty flashlight!

http://www.1strecon.org/TheShoppe/flashlight/index.shtml

Schematic for the flashlight kit.

Bootloaders? We dont need no stinking Bootloaders!

Posted November 5, 2008 by feurig & filed under Dorkbot.

Using the new features of arduino 12.

There is much that is new in the new arduino. Most of it in the user libraries and all of it good. My favorite is the addition of the ability to specify a different programmer as long as its avrdude approved.

boards.txt and programmers.txt

If you select the boards on my Arduino setup it will look very different than the stock Arduino.

Benito Sanguino Arduino.

Posted November 1, 2008 by feurig & filed under Dorkbot.

Is it me or does that look like a target?

Posted October 27, 2008 by feurig & filed under iphone.

http://www.gearthblog.com/blog/archives/2008/10/google_earth_for_the_iphone_release.html

Pretty Pretty.

Posted October 16, 2008 by feurig & filed under Dorkbot.

As it gets dark I find myself needing to get the blinking lights working on my bycycle. I am also reminded of the ever present need to find space where you don’t have to breath what you work with. Three days after casting the first set of lights the apartment still reeks.

Posts By: feurig