“Botanicus Interacticus uses the recently developed Swept Frequency Capacitive Sensing technology. Previous capacitive sensing techniques measure response to touch by exciting the target objects with an electrical signal at a single frequency. We excite plants at multiple frequencies, by sweeping them through a range between 0. 1 and 3 Mhz. Because the path of the electrical signal inside the plant varies with frequency, we can estimate touch locations by observing the frequencies at which the signal was affected by user touch. Since the plant has a complex and dynamic electrical structure, we use machine - learning techniques to recognize gestures on plants reliably and with high precision.”


what can be measured?

  • plant physiology
    • moisture levels / tension
    • action potentials (Reiss)
    • resistance (wheatstone/transistor) and impedance(AD5933)
    • micro-voltages (is action potential?) (and question of response to electromagnetic waves/fields eg. Lawrence, Experiments in Electroculture)
    • photon counting in case of bioluminescence
    • movement of plants/rate and direction of local growth
  • 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 (or response to ultrasonics)
  • the plant's environment
    • what is it like?

plants producing electricity in Plant MFC ??

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 Level:


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