• commercial, US only plant sensor & planting database > http://www.easybloom.com/buy/overview.html
• people having trouble with carol reiss' action potential measuring experiment
• carol reiss on her action potential measuring experiment
• System for sensing electrical potential particularly in plants. Patent number: 4039942
• The 'Crescograph' invented by J.C.Bose
• Backster's polygraph experiments
• “Lawrence device” (c.f. lunch, ursa major, onion telescope)
• “Detecting Biodynamic Signals” by Michael Theroux > http://www.borderlands.com/archives/arch/detectin.htm
• “Als planten konden praten” sensoren in wageningen » http://library.wur.nl/file/wurpubs/wurpublikatie_i00365456_001.pdf
• plants on the phone botanicalls
• a pot plant that blogs from a japanese cafe > http://www.pinktentacle.com/2008/10/midori-san-the-blogging-houseplant/
• Fertometer: http://www.fertometer.com/ (also has a quite detailed description of how it works: it's basically an electrical conductivity meter http://www.fertometer.com/specs.html. here is a page about making a DIY electical conductivity meter http://www.octiva.net/projects/ppm/)
• pH meter > http://blea.ch/wiki/index.php/PH_Meter
• environmental sensing > http://web.media.mit.edu/~fletcher/env-sensing/environmental-sensing.htm

what can be measured?

• plant physiology
  • moisture levels / tension
  • action potentials (Reiss)
  • […]
• environmental
  • soil moisture
  • pH level
  • temperature (thermistor, or calibrated temp. sensor eg. LM35 or TD5A)
  • humidity (eg. HS12P)
  • uv / light levels (eg. photocells/photoresistor)

what can be observed or recorded 'subjectively'?

• plant
  • species, common name, individual name
  • general characteristics (eg. height, width, density, branches)
  • leaf qualities (eg. shape, arrangement, simple/compound, etc)
  • foliage qualities (eg. colour, shape, feel, density, etc)
  • health & happiness (as observed by the gardener)
  • favourite music
• the plant's environment
  • what is it like?

plants producing electricity in Plant MFC ??

• http://octopart.com/parts/category--industrial+control--sensors+and+accessories/search?c=5510

current tests (200907)

• A1302EUA hall effect linear SIP-V data
• TEPT4400 Photodiode data
• MCP9701A Thermistor Linear 19,5mV/°C data
• MCP9700A Thermistor Linear 10,5mV/°C data
• HCH-1000-001 Capacitive Humidity Sensor data
• AD22103KTZ Temperatuve 3,3V data

light:

moisture:

Light Level:

http://apps.pachube.com/google_viz/preview.php?f=1951&d=0&w=600&h=150&g=FF0066

EEML “Extended Environments Markup Language (EEML), a protocol for sharing sensor data between remote responsive environments, both physical and virtual.” http://www.eeml.org/

“SensorML is an Open Geospatial Consortium standard markup language (using XML Schema) for providing descriptions of sensor systems. By design it supports a wide range of sensors, including both dynamic and stationary platforms and both in-situ and remote sensors.” SensorML

• “Plant neurobiology: an integrated view of plant signaling” > http://crb.colostate.edu/home/Design/Assets/papers/Brenner2006.pdf
• “Plants as Sensitive Agents” > http://www.borderlands.com/newstuff/research/plantsas.htm
• see also plant perception and HPI