Wednesday, April 13th, 2011

Blog Posts

Tuesday, April 12th, 2011

Blog Posts

Photography Student Metaphoto

I went out on my balcony to check out the sunset and noticed a couple of people with a large-format camera in the parking lot. Turns out one of them was a photography student. I thought it would make for an interesting metaphoto:

Photography Student

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Monday, April 4th, 2011

Photos

Sunday, March 13th, 2011

Photos

Thursday, March 10th, 2011

Blog Posts

Death Valley Wildflowers 2011

Over my vacation a few weeks ago I spent a few hours photographing wildflowers in Death Valley. I found 21 different species in bloom in 3 separate areas of the park. The first area, near Ashford Mill had mostly Desert Gold and Sand Verbenas. The second area, off Green Valley Road, where we camped and which received a good amount of rain (on February 25th-26th) had Cryptantha, Woolystars and Fiddlenecks. Finally the big score came on my birthday on the 27th just below Jubilee pass on the way to Shoshone.

The ground by the road was covered with over a dozen different species of wildflowers. I photographed many flowers I had never seen before. It was really quite beautiful. Hopefully the rain will keep up and more flowers will pop up throughout the desert. There is something really magical about finding wildflowers carpeting the ground in one of the harshest desert environments on the planet.

Below are some of my favorites from the trip. Read on to see each of the 21 different Death Valley wildflowers I photographed.

Desert Five Spot Desert Five Spot

Eremalche rotundifolia

Gravel Ghost Gravel Ghost

Atrichoseris latyphylla

Desert Gold Poppy Desert Gold Poppy

Eschscholzia glyptosperma

Bigelow's Monkeyflower Bigelow's Monkeyflower

Mimulus bigelovei

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Monday, February 28th, 2011

Photos

Wednesday, January 19th, 2011

Tuesday, January 18th, 2011

Blog Posts

Photos

Monday, December 27th, 2010

Wednesday, December 22nd, 2010

Saturday, December 18th, 2010

Photos

Thursday, December 16th, 2010

Blog Posts

Griffith Park Hike

This weekend my lovely wife Penelope and I hiked up to Mt. Lee in Griffith Park. Mt. Lee is also the peak that the Hollywood Sign sits on. You can't quite get to the sign as it's fenced off and marked "No Trespassing", but you can get above it.

The route we took started at the Camp Hollywoodland parking lot and was about 6.5 miles round trip. The hike took us about two and a half hours with many stops for photos.

The company I work for, Cartifact, has an interactive map of Griffith Park you can check out. The map is quite detailed. We're working on an updated version along with some cool new ways to view it.

The LA sky was amazingly clear and smog-free that day. In the photos below you can clearly see Catalina in the distance:

Los Angeles From The Hollywood Sign #### Los Angeles From The Hollywood Sign

Mt. Lee Antennas and Downtown Los Angeles #### Mt. Lee Antennas and Downtown Los Angeles

Penelope and Dave Atop Mt. Lee #### Penelope and Dave Atop Mt. Lee

Turning Leaves in Griffith Park #### Turning Leaves in Griffith Park

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Photos

Monday, December 13th, 2010

Photos

Thursday, December 9th, 2010

Photos

Tuesday, December 7th, 2010

Monday, December 6th, 2010

Sunday, December 5th, 2010

Friday, December 3rd, 2010

Saturday, November 27th, 2010

Photos

Friday, November 26th, 2010

Thursday, November 25th, 2010

Friday, November 19th, 2010

Thursday, November 18th, 2010

Blog Posts

Null Space Labs - Los Angeles Hackerspace

Null Space Labs

Recently I joined a hackerspace in Downtown LA called Null Space Labs. What is a hackerspace you ask? A hackerspace is a communal workshop where folks can work on electronics, programming and basically whatever tech stuff they're interested in. NSL was started by a group of people from the local computer security (hacking) scene earlier this year.

Here is the description from the website:

Null Space Labs, a hackerspace in downtown Los Angeles a place for people who do interesting things with tech.

We offer wifi, coworking space, an electronics and hardware lab with soldering stations and rework equipment, a small wet lab, simple wood and metal working tools, public computers, and most of all a creative environment that's open to visitors.

Fields of interest of people you might find at the lab include DIY electronics, hardware hacking, lock picking, game development, entrepreneurship, security, graphics programming, AI, photography, privacy and civil rights, etc....

The group that operates Null Space Labs sees itself solely as an infrastructure provider and exerts little influence over projects and events carried out at the lab. We are trying to be financially independent, and finance our operations through membership fees. The space was opened in May 2010.

I joined NSL a few months ago, and this month I took the plunge and became a keyholder, granting me access whenever I feel like working on my projects. The space is great, there are tons of really knowledgeable people who are always more than willing to assist you with pretty much anything related to electronics, microcontrollers, hardware hacking, network security, and more.

The members of NSL are working on a plethora of interesting projects. You can read all about them on the wiki, but here is a selection of some that are particularly interesting:

We have a ton of great equipment for use by members and non-members alike including over a dozen Metcal soldering stations, hot-air and plate rework equipment, oscilloscopes, function generators, a PCB CNC machine, stereo microscopes and much more. We frequently do group buys on parts and PCBs. We also have a large collection of part in house, available for use in your project (donations appreciated).

If you're in the neighborhood, come by and check out our space. If you want to learn about electronics and soldering we have a fun board you can put together in an hour or two if you're new to SMD soldering. You can tell if we're in by looking at this wiki page or by following the NSL Status twitter stream. Here is our address:

  • Null Space Labs
  • 1015 S Main St - 3rd Floor
  • Los Angeles CA, 90015

Read more...

Wednesday, November 17th, 2010

Blog Posts

Stellaris Evalbot Review <del>and Giveaway</del> and Winners

TI Stellaris Evalbot

Texas Instruments recently came out with a fun and powerful development robot based on the Stellaris LM3S9B92 microcontroller. The robot, known as the Stellaris Evalbot, is packed with tons of functionality that leverages the LN2S9B92's robust feature set. The Evalbot comes pre-assembled, with the exception of the wheels and bump arms which take just a few minutes to put together.

First of all, let's talk about the function-rich microcontroller at the heart of the Evalbot: the Stellaris LM3S9B92. The Stellaris, created by Luminary Micro (acquired in 2009 by Texas Instruments) is a 32-bit ARM Cortex-M3 MCU which runs at speeds up to 80Mhz. It sports a wide array of features including:

  • 256 kB flash and 96 kB SRAM
  • 32 Channel DMA
  • 32-bit external peripheral interface
  • ROM preloaded with a boot loader, AES and CRC functionality
  • 10/100 Ethernet MAC/PHY
  • 2 CAN controllers
  • USB 2.0 Full Speed OTG/Host/Device
  • 2 SSI / SPI controllers
  • 2 I2C interfaces
  • I2S interface
  • 3 UARTs
  • 8 motion-control PWM outputs with dead-band
  • 2 quadrature encoder inputs
  • 4 fault protection inputs
  • 3 analog comparators
  • 16 channel 10-bit ADC
  • 16 digital comparators
  • 24-bit systick timer
  • 4 32-bit or 8 16-bit timers
  • 2 watchdog timers
  • Low drop-out voltage regulator
  • Up to 65 GPIOs

The Evalbot is the perfect platform for learning about and developing for the LM3S9B92. It takes advantage of nearly every feature included in the Stellaris MCU. The Evalbot is both battery and USB powered, and automatically switches when plugged in to a computer. It features a collection of analog and digital peripherals along with a large amount of breakout pads and headers for I/O expansion. The Evalbot includes:

  • MicroSD card connector
  • USB Host and Device connectors
  • I2S audio codec and speaker
  • RJ45 Ethernet connector
  • Bright 96 x 16 blue OLED display
  • On-board In-Circuit Debug Interface (ICDI)
  • Wireless communication expansion port
  • Two DC gear-motors provide drive and steering
  • Opto-sensors detect wheel rotation with 45° resolution
  • Sensors for bump detection

The Evalbot comes preloaded with the μC/OS-III real-time kernel. The Evalbot includes a time-limited version of the IDE (from IAR) you will need to get started programming the bot. Also included is the source code for the Evalbot and some handy in-circuit debugging tools. It's fairly easy to get set up, but runs on Windows only. I was able to flash a modified version of the firmware after just a few minutes of tinkering. My only complaint is that the software is quite expensive to purchase once the trial period runs out.

The Evalbot retails for $149 for the robot by itself or $200 for the robot and a book about programming the μC/OS-III real-time kernel. If you're looking to learn more about real-time systems and play with a powerful microprocessor I highly recommend the Evalbot. As I mentioned in the headline, I have five Evalbots to giveaway, click here for more info about the giveaway.

Stellaris Evalbot

Giveaway Info:

Texas Instruments was generous enough to send me five Evalbots to give away. I will be drawing drew names from a hat on Black Friday, November 26th. To be entered in the drawing you must [have] meet the following requirements:

  • Have a project idea for the Evalbot
  • Be a paying member of a hackerspace
  • Be willing to share photos and/or a brief writeup once you have completed your project
  • Be a US resident (I have to ship these on my own dime)
  • Post a comment with your project idea and hackerspace affiliation below

To be entered in the drawing, post a comment below describing your project idea. Don't forget to mention which hackerspace you belong to.

Update:

I drew names out of a hat (literally), here are the winners:

  1. Clarence Risher from Freeside in Atlanta, GA
  2. Daryll Strauss from CrashSpace in Culver City, CA.
  3. Erik Arendall from Makers Local 256 in Huntsville, AL.
  4. flea from 23b in Fullerton, CA.
  5. tilver from DenHac in Denver, CO.
  6. Although not drawn out of a hat, members of Null Space Labs in Los Angeles, CA can use mine.

Read more...

Tuesday, November 16th, 2010

Blog Posts

SPAWAR - Autonomous Military Robots

A few years ago I toured the U.S. Navy's Space and Naval Warfare Systems Center Robotics Lab in San Diego. I shot photos and wrote a piece for Wired about my experience there. What follows are some out-takes along with high-res versions of many of the shots in the piece. Autonomous military robots... what could go wrong?

SAN DIEGO -- The Navy's MDARS-E is an armed robot that can track anything that moves. Told that I was the target, the unmanned vehicle trained its guns on me and ordered, "Stay where you are," in an intimidating robot voice. And yes, it was frightening. Perched atop a strip of cliffs lining a beautiful section of the Pacific Ocean, the Space and Naval Warfare System Command in San Diego develops semiautonomous armed robots for use in combat by the U.S. military. "We're not building Skynet" says Bart Everett, the technical director for robotics at SPAWAR. Though Everett assured me that the use of the robots' on-board weapons is under the strict control of their operators, the lab's bots can navigate and map complicated terrain, work cooperatively with soldiers and identify and confront hostile targets. Sure, they're no Johnny Five, but robots with guns are both creepy and fascinating.

Robart 3E at SPAWAR #### Robart 3E at SPAWAR

ROBART III is a prototype platform designed in-house at SPAWAR. If it weren't for the chain gun and missiles, he would be pretty cute. Once he's ready for battle he'll almost certainly don an evil-looking suit of armor. ROBART's sensor array consists of a multitude of cameras, SICK LIDAR (like radar, but with lasers), ultrasonic transducers (gold spots), passive IR (infrared radiation) detectors and more. The weapons are planned to work in unison with a special rifle that would automatically target where a soldier points his weapon.

Laser Guided Chain Gun on Development Robot #### Laser Guided Chain Gun on Development Robot

One of ROBART III's weapon systems is this nonlethal pneumatic chain gun. It uses a combination of laser sighting and machine vision to lock in on its target and barrages it with a torrent of 3/16-inch-diameter projectiles. In tests, plastic pellets (like air-soft munitions) and steel darts were used.

Autonomous Machine Gun #### Autonomous Machine Gun

This prototype robotic weapon platform is designed to be buried underground for camouflaged deployment. When called to action, the robotic gun pops up and starts shooting. If you're the unlucky soul on the business end of this gun, it's likely curtains for you -- this robot is an extremely accurate shooter. A high-tech night-vision scope permits dead-on targeting even during moonless nights.

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Saturday, November 13th, 2010

Photos

Thursday, November 11th, 2010

Blog Posts

LA Walkabouts - My Solo Show at Indigo Gallery in Pomona

This Saturday marks the opening of my third solo show. The show is at Indigo Gallery in Pomona. The work consists of an eclectic assortment of photos from my many Downtown LA Walkabouts. There are many other galleries open during the Pomona Art Walk, which brings a large group of people to downtown Pomona. The show runs until December 25th, so you have plenty of time to check it out. This Saturday is the opening reception. Here are the details:

Dave Bullock L.A. Walkabouts

Indigo Gallery

558 W. Second Street

Pomona, CA 91766

  • Opening Reception - Saturday, Nov. 13th 6-10pm
  • Last Saturday Reception - Saturday, Nov. 27th 6-9pm
  • December Reception - Saturday, Dec. 11th 6-10pm

Here are the photos from the show:

Sakura Crossing

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Monday, November 8th, 2010

Blog Posts

The Station Fire - One Year Later

Roughly one year ago a huge fire tore through Southern California burning over 160,000 acres of forestland. When it first started, I took photos of the Station Fire blazing through our local mountains.

A few weeks ago, and almost exactly a year after the Station Fire was extinguished, Penelope and I went for a drive up Angeles Crest Highway. The route we usually take, through Pasadena/La Cañada is still closed, but we were able to access the forest going in the back way.

The bad news is, much of the forest has been burnt to a crisp. The good news is that there is life everywhere and the forest will return eventually. Here are a few photos I shot of the forest coming back to life:

Life Coming Back #### Life Coming Back

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Saturday, November 6th, 2010

Photos

Thursday, November 4th, 2010

Tuesday, November 2nd, 2010

Sunday, October 31st, 2010

Photos

accessories
accessories
urban
urban
outdoor
outdoor
crowd
crowd
outdoors
outdoors
sky
sky
building
building
electronics
electronics
hat
hat
part
part
architecture
architecture
lighting
lighting
art
art
nature
nature
concert
concert
plant
plant
night
night
coachella
coachella
glasses
glasses
land
land
recreation
recreation
footwear
footwear
shoe
shoe
photography
photography
jewelry
jewelry
indoors
indoors
furniture
furniture
performance
performance
vehicle
vehicle
light
light
transportation
transportation
machine
machine
city
city
portrait
portrait
device
device
club
club
electrical
electrical
blue
blue
room
room
stage
stage
animal
animal
rekognition c
rekognition c
bag
bag
life
life
interior
interior
microphone
microphone
audience
audience
handbag
handbag
rock
rock
car
car
cap
cap
metropolis
metropolis
computer
computer
music
music
road
road
musical
musical
performer
performer
instrument
instrument
headgear
headgear
activities
activities
leisure
leisure
baseball
baseball
tree
tree
shirt
shirt
hardware
hardware
necklace
necklace
wood
wood
water
water
entertainer
entertainer
pants
pants
cloudy
cloudy
wristwatch
wristwatch
table
table
screen
screen
coat
coat
chair
chair
grass
grass
fun
fun
monitor
monitor
mammal
mammal
musician
musician
bracelet
bracelet
floor
floor
party
party
arts
arts
speaker
speaker
performing
performing
flooring
flooring
baby
baby
flare
flare
pub
pub
cup
cup
pet
pet
food
food
scenery
scenery
path
path
housing
housing
jeans
jeans
wheel
wheel
spotlight
spotlight
junglescene
junglescene
beverage
beverage
couch
couch
weekend
weekend
design
design
jacket
jacket
plywood
plywood
office
office
alcohol
alcohol
child
child
flower
flower
nightclub
nightclub
container
container
canine
canine
boy
boy
hill
hill
dog
dog
cord
cord
darkness
darkness
summer
summer
pc
pc
area
area
street
street
park
park
laptop
laptop
happy
happy
glove
glove
equipment
equipment
cityscape
cityscape
desk
desk
shelter
shelter
landscape
landscape
singer
singer
sport
sport
wear
wear
formal
formal
phone
phone
sea
sea
smile
smile
guitar
guitar