Autonoumous Plant Robot CA2 Report Thing I have done since CA1: 1.Further research on electrical potential in plant: How are potential in different plants:  Because potential signal in Aloe Vera seems to have faster speed and higher amplitude, I decided to use this plant for the project. How would the potential change due to stimuli:  2.Set up the experiment:  -During the first 2 week after CA1, looking for equipments from affiliated labs: Power Electronics Lab, Molecular Neurobiology Lab, Physiology Neurobiology Lab.... -Since I can't find some necessary equipments, I have to search and buy appropriate them from overseas. *Ag/AgCl electrode: this type of electrode is perfect for my experiment. The coaxial layer of this electrodes contains Cl- which is similar to biology fluid of plant. This helps it to work more stable in plant's fluid than other metallic electrodes. -Model E205 Ag/AgCl pellet electrode -Electrode Dimensions: 2.0 x 4.0 mm (D x Thick) -Wire Dimensions: 0.25 mm D x 7 mm (silver wire)
*Data Acquisition Unit: convert analog signal into digital signal and log the data at the same time. Sampling rate must be high enough to avoid aliasing(fs>fNyquist) At the first step, we can use a high-speed digital oscilloscope to log and display the signals. However, for further step, high-speed data acquisition unit may need to further analyze the signal.Some low cost DA unit: -Keithley DA Unit (KUSB-3108). -Emant300 Low cost USB DA Unit. The Next Step: The lack of equipments has slowed me down since CA1 so I really need to pick-up.Once necessary equipments arrived, most likely by the end of next week. My aim is to have some stable electrical signals respecting to stimuli from a living plant at the end of January. -During February, I intend to collect and analyze electrical signal responses of a specific plant with respect to outside stimuli (temperature, sun light, soil moisture, human-touch…) -At the end of March, I expect to be able to use plant’s signal to control the robot. - For CA4 in April, I hope I can show you a first prototype of plant robot which can do some simple task.
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