We need some details about soil moisture sensor which can be used with telosB.
Please help us to select a product.
Dear Pradeepa,
Your question states the need of handling the soil moisture sensors with the TelosB mote.
I'm not very familiar with such, but I can see that most of them utilizes 2xAA battery that will produce only 3V. You will have to look at this carefully since most soil moisture sensors might need a greater power up voltage.
On the other hand, if you are working with the TelosB CM3300 which has a DC input, that you might use to power up with larger voltages only the sensors.
So, about the soil moisture sensors there is a good number of them available in the Int. Market. First of all I would list the DECAGON EC-5, because allows you to use excitation voltages inferior to 3V (2.5 - 3.6 V DC @ 10 mA. Output proportional to input voltage). But, you will have to make sure to calibrate them depending on excitation voltages utilized.
Then, there is the Stevens Water Hydra Probe II, Delta-T SM-150, TDR from Campbell, IMKO PICO IPH/T3 or PICO 32, Aqua Spy, Sentek EnviroSCAN, etc, etc.
I hope you find this helpful.
Wish you well.
I am not that familiar with the TelosB, but to second what Felix Ruben Arguedas-Rodriguez said, the Decagon EC-5 is really useful. We've deployed them under a rang of climatic conditions, from warm riparian areas to high-altitude watersheds and found them to be incredibly reliable and easier to calibrate to various soil types.
Good luck on finding what you need though!
Try to Google the following link:
http://www.libelium.com/development/waspmote/documentation/agriculture-board-technical-guide/
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