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DIY Techology Lets Your Plants Twitter You When They Are Thirsty

by Russell Shaw

twitterplants.jpg

Well, gang, this one’s so far over the wall that it sounds absolutely daft. Bu I promise you, it can be done.

That would be hooking your plant up so that it can Twitter you when it is feeling kind of dehydrated. Even when you are on the go!

The process involves a plant, a handheld mobile device, as well as technology from Botanicalls, iwhich a system that was developed to allow plants to place phone calls for human help. When a plant on the Botanicalls network needs water, it can call a person and ask for exactly what it needs. When people phone the plants, the plants orient callers to their habits and characteristics.

Step-by-step procedure is too detailed for us to list here, but as described on the Botanicals page, you will need a moisture probe, wiring and a lot of time and patience.

Before you even begin, you will also need:

(1) 2N2222A or 2N3904 transistor
(1) 100 ohm resistor

(1) 10K Ohm resistor

(1) LED

(2) galvanized nails, preferably hot dipped

(1) small breadboard

(1) Adafruit Xport shield

(1) XPort or Xport Direct

(1) Arduino USB board

(1) 9V DC power adapter

hook up wire in assorted colors

solder

USB A to B cable

USB A to miniB cable

USB Serial FTDI adapter (optional)

Ethernet cable

EQUIPMENT:

soldering iron

helping hands

computer with ZTerm or HyperTerminal, Arduino

Oh, and don’t let me forget to mention, a Twitter account.

Hey, spring is coming soon, and your plants are feeling the urge to grow. When they need a little water to help them along, why not let them let you know when they could use a few gulps?

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4 Comments »

  Paul Ruppert wrote @ February 25th, 2008 at 11:18 pm

A new meaning for P2P, Plant to person.

  Fred Dunn wrote @ February 27th, 2008 at 4:58 pm

Since I haven’t seen the schematic I can’t tell whether this device is using soil humidity as its sensing method, but one word of caution if it is.
I built an automatic watering device some years back using a low power N channel MOSFET and it worked fine for a while but after a while it was not as accurate as it should have been.
What it turned out to be was I was using a DC source across the sensors (two stainless steel wires stick into the soil” and the negative prod was get plated with all kinds of gunk and the resistance kept going up.
So to alleviate that I used a bi-phasic square wave (net: zero dc) and the sensor values remained stable. In a nushell (no pun intended) make sure that using a good RMS multimeter that the charge across the two prods has no (or very little) DC component. To do this you could incorporate an integator to feedback to the biphasic generator to adjust the periods of the pulses.

  twitter me this « PRescience wrote @ February 28th, 2008 at 6:07 pm

[...] the wackiest most ridiculous new media invention I have heard of… ever! Check out the story here and the Web site for the plans at the Botanicalls page (haha, get [...]

[...] DIY Techology Lets Your Plants Twitter You When They Are Thirsty. Don’t believe it can’t be done? Read the post and you be the [...]

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