ATtiny84 and arduino

Downsizing arduino projects using the ATtiny 45 (8 pin) and ATtiny 84 (14 pin) using the High Low Tech at MIT guidelines

Reference

The following Arduino commands should be supported:

• pinMode()
• digitalWrite()
• digitalRead()
• analogRead()
• analogWrite()
• shiftOut()
• pulseIn()
• millis()
• micros()
• delay()
• delayMicroseconds()
• SoftwareSerial (has been updated in Arduino 1.0)

For sulfide and H2S concentration
http://www.chemetrics.com/Sulfide

Build a box using a laser cutter using helpful online tool at http://boxmaker.rahulbotics.com/

Photos on bamboo

Photos printed on sustainable bamboo

Simplicity and ingenuity power Portland's digital photography framers

Open source chromatography software

Open source software (opencheom.net) can read a multitude of file formats including GC-MS data.  Can also read CSV files so could easily be connected to an arduino running processing or a firmata shield

HOBO datalogger

Data logger text

Arduino datalogger

Monitoring the lake turnover during the winter, I submerged three thermistors from Adafruit in the lake.  The thermistors are connected via ethernet cable to the shed and then eventually to an Adafruit datalogger

The datalogger is next to a commercial HOBO datalogger for comparison