Thursday, December 17, 2009
Freeduino and other arduinos and writing to SD cards
Write to SD card http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1206874649/8
Arduino on a breadboard with a serial connection
For boards built around a breadboard, or to use a serial connector, from arduino site, or good tutorial using the 7404 chip,
Monday, December 14, 2009
Saturday, December 12, 2009
Hardcopy arduino fits in altoids tin
Only issue, is that the RESET pin is not brought out. BUT, there is a RESET in the ICSP header, so could utilize that one I think
Wednesday, December 9, 2009
Arduino - Printing floats to specific decmimal places
DataLogger Version 1
Tuesday, December 8, 2009
External EEPROM - writing temperature data
Monday, December 7, 2009
I2C on arduino
Wednesday, December 2, 2009
Serial out
and an awesome serial out to processing and radar screen. Should work for Hospital monitor!
Open source arduino clock
Tuesday, December 1, 2009
Lego arduino clock
Arduino watchdog and sleep functions
Make use of the Watchdog and Sleep functions provided by the ATMEGA 168 chip . These functions are useful if you want to build low power consuming devices operated by battery or solar power
Monday, November 30, 2009
PS 2 keyboard and mouse to arduino
Sunday, November 29, 2009
Temperature logger
Here is a microSD card shield that interfaces to bradboard/arduino, used by fat16lib in his post
Some arduino version with an LCD using I2C interfaces as a stand alone, and the code for reading and writing is loaded. Second version attached to PC and uses Perl to log and plot.
Dumping data to excel is outlined in this thread
Tuesday, November 24, 2009
Programming arduino wirelessly using Xbee
Upgraded Xbee - processing screen
Wireless for arduino
Multiple RGB LEDS and expanding PWM controls
Alternatives - could use multiple arduinos (each providing 6 PWMs) and use I2C to connect or maybe use an Arduino Mega (12 PWM).
Thursday, November 19, 2009
analog gauges
Thursday, November 5, 2009
PCB Boards
Then there are strip boards....
Saturday, October 3, 2009
Controlling multiple LEDs
If you want discrete analog control over one output at a time, you can use a multiplexer. For digital control over multiple pins, you could use an addressable latch or a shift register. If you need pseudo-analog control over multiple pins, you could use a PWM driver. There are also several LED driver chips that are designed specifically to control groups of LEDS.
So the ST16C596 shift register is similar to the popular 74HC595 shift register, but it’s nicer because it can sink a constant current to the LEDs it’s driving.
Tuesday, September 8, 2009
update XBee firmware
arduino xbee temperature sensor
Tweet-A-Watt from LadyAda is great
and also in the forums lots of details
Here is the inital mock-up...
Code to use in processing may be modified from Tom Igoe
and XBee library
Friday, September 4, 2009
IR sensor with processing
Tuesday, September 1, 2009
Real Time Clock and EEPROM
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Wulden has RTC, EEPROM and backup on postage size board
Arduino datalogger
Great post on adafruit about atalogging and writing to SD card http://www.ladyada.net/forums/viewtopic.php?f=31&t=11978
Arduino blog
Monday, August 31, 2009
Pummer beginnings
Friday, August 21, 2009
Long Time Coming
Tuesday, April 14, 2009
Cool BEAM projects
Incredible BEAM bots and using gold cap capacitors make small and wonderful bots
BEAM bots in Houston by Ian Bernstein
Saturday, March 21, 2009
Our Earth is wounded
Our earth is wounded.
Her oceans and lakes are sick; her rivers are like running sores; The air is filled with subtle posions. And the oily smoke of countless hellish fires blackens the sun. Men and women, scattered from homeland, family, friends, wander desolate and uncertain, scorched by a toxic sun...
In this desert of frightened, blind uncertainty, some take refuge in the pursuit of power. Some become manipulators of illusion and deceit.
If wisdom and harmony still dwell in this world, as other than a dream lost in an unopened book, they are hidden in our heartbeat.
And it is from our hearts that we cry out. We cry out and our voices are the single voice of this wounded earth. Our cries are a great wind across the earth."
"The Warrior Song of King Gesar",
by Douglas J Penick - 1996
Sunday, March 8, 2009
BEAM robots - plant life
BEAM robotics ideas at
http://www.streettech.com/modules.php?op=modload&name=News&file=article&sid=1618
BEAM robotic art
Saturday, February 28, 2009
First step towards motor control
NOw time to start constructing the motor systems to make a kinetic scultpture.....
Thursday, February 26, 2009
Stepper Motor control
Using an EasyDriver to control a stepper motor.
Good tutorial http://danthompsonsblog.blogspot.com/2008/09/easydriver-v31-tutorial.html
Wednesday, February 25, 2009
Stepper Motor liberated from CD Drive and Floppy Drive
Good photos of liberating the motor at http://flickr.com/photos/russnelson/sets/72157594331481462/
good photos of salvaged motors from printer, CD drives at http://www.flickr.com/photos/anachrocomputer/282293157/
Monday, February 9, 2009
Worm gear
http://www.tamiyausa.com/product/item.php?product-id=72004
Friday, February 6, 2009
Belt driven robotics
There is an interesting set of brackets, pulleys, worm gears at http://www.vexrobotics.com/vex-robotics-advanced-gear-kit.shtml
Thursday, February 5, 2009
Construction
Metal parts to build structures from
http://www.hobbyengineering.com/SectionFR.html
Belts and sprockets http://www.hobbyengineering.com/H2028.html
from Tamiya......
They also have pulley sets
Great system at http://www.vexrobotics.com/vex-robotics-advanced-gear-kit.shtml
Motor control
Control of a basic motor using Parallax Motor MInd B http://www.parallax.com/
or the Secret Drive kit from Solarbotics that fits INSIDE a servo http://www.solarbotics.com/products/k_smd/
or the bigger version Kit #13 - L298 Compact Motor Driver Kit from Solarbotics
http://www.solarbotics.com/products/k_cmd/ which usable from 6 to 50V, at up to 4A total output current
For stepper motors parallax has the Little Step-U Motor Controller at $70 it can save a lot of time and BS2 computing time
EasyDriver v3 Stepper Motor Driver for stepper motors at http://www.trossenrobotics.com/easydriver-v3-stepper-motor-driver.aspx