Re: [DIYbio] Measuring plant voltages

Tim,
since you're more familiar with the field in general, have you ever
heard of the crescograph? Is it worth looking into more, and do you
know if we've definitely superseded it with other technology?

On Fri, Aug 2, 2013 at 12:42 PM, Tim @ Backyard Brains
<tim@backyardbrains.com> wrote:
> Hi Carlos,
> The SpikerBox is an AC amp, and can't record the slow potentials of plants
> (for example, the action potential of a Venus Fly Trap is ~ 1 second long).
>
> But, you are in luck. You only need about 100-200 gain to amplify the
> voltages of plants such as fly traps and sensitive mamomas.
> There is a book on "plant electrophysiology"
> http://www.springer.com/life+sciences/plant+sciences/book/978-3-540-32717-2
>
> That is a bit expensive but perhaps you can find it at your local University
> Library.
>
> Cheers,
> Tim
>
>
> On Thursday, August 1, 2013 9:23:12 PM UTC-4, Sebastian wrote:
>>
>> SpikerBox works very well with plant action potentials. If you google Ivan
>> Henriques, you may find his recent art work on a plant controlled robot. It
>> takes the signal moves the not in a random direction. Its a simple DIY box
>> and its very fun to play with. Good luck!
>>
>> Sent from my Windows Phone
>> ________________________________
>> From: Carlos Castellanos
>> Sent: 8/1/2013 9:20 PM
>> To: diy...@googlegroups.com
>>
>> Subject: [DIYbio] Measuring plant voltages
>>
>> Hi gang,
>>
>> I'm hoping there is someone here with some knowledge of plant biology. I
>> would be very grateful for any advice, references, etc on the subject of
>> measuring plant voltages and other properties (e.g. pH). I'm thinking a GSR
>> circuit using a wheatstone bridge and op-amp will do but I would appreciate
>> any schematics/diagrams, etc
>>
>> I would also like to see discussion of parameters, variables, experiments
>> most galvanically active plants, etc. I am particularly interested in
>> measuring voltages and biochemistry in wetland/marshy areas.
>>
>> Any suggestions concerning other (simple) techniques for real-time
>> feedback from plants would be appreciated.
>>
>> Thanks!
>> -Carlos
>>
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--
-Nathan

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