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Author Topic: How to: soil moisture measurement?  (Read 29335 times)
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Can't find the link but how far apart do nails need to be? I'll going to make a probe to see the moisture in the garden is getting there.
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Hi Chris,

Not so far. In order to have them at under constant distance, i used an old wall plug connector. So the terminals works such as the nails... They could not go so deep, but it could be used like an "standard".

Take a look to what i did here:
http://ardudrop.jottit.com


In any case, you decide the distance, because it require a calibration by the 10K pot and also by code... Select you distance, and calibrate it to 0% of water and 100% of water in the soil.

I hope it could be useful for you.

Cheers,
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hi, I want to ask, which is better and more accurate  between the simple circuit and Botanicalls twitter DIY? can somebody help me to make a decision.

Thank You
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Hi Noor Raihan,

I can not say to you exactly which one is better...

In fact, somewhen during next weeks i will try to develop and test this other soil moisture sensor:
http://gardenbot.org/howTo/soilMoisture/

I will report differences with the other sensors that we discussed here...
Cheers,
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Hi madepablo,

I really appreciate your effort to help me. Actually I don't have any experience to do this. I hope I can learn more from this forum. Thanks a lot.
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If I don't want the part for the twitter message, what I've to do to the project so that the result will just appear on the arduino software? Can somebody teach me how to do it.
http://www.botanicalls.com/archived_kits/twitter/
This is the link I refer to.
Thank You.
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Is anyone here had an experience in order to build Soil Moisture Sensor? If there any, can u share ur knowledge with me because I never do this kind of project before by using arduino. Actually my project is about to detect the soil moisture by using Vegetronix VG400 Soil Moisture Sensor probes. It will change the analog to digital value so that it can be easily determine the moisture. If the moisture too dry (RED LED blinking), if the moisture wet (GREEN LED blinking) and if the condition of the soil is not too dry and wet (YELLOW LED blinking). I also wanna make an alarm when the moisture too dry. Can somebody help me to figure it. Thank You
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Is anyone here had an experience in order to build Soil Moisture Sensor?
Quote
Actually my project is about to detect the soil moisture by using Vegetronix VG400 Soil Moisture Sensor probes.
You want to make one or buy one? If you want to buy one, go ahead. You have our permission. Not our paypal number or credit card, though.

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If the moisture too dry (RED LED blinking), if the moisture wet (GREEN LED blinking) and if the condition of the soil is not too dry and wet (YELLOW LED blinking).
Typically, red and yellow indicate problem conditions, and green means good.

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I also wanna make an alarm when the moisture too dry.
I'd suggest a wave shield with some of these:
http://www.songarea.com/music-codes/dry.html

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Can somebody help me to figure it.
What's left to figure out? Just the threshold between too wet/just right and between just right/too dry, and that will depend on the plant(s) you are monitoring.
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Thanks for the reply. Actually what I means from the previous post is how to do the coding part. Is there any link which I can refer to?
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Is there any link which I can refer to?
Sure. http://arduino.cc/en/Reference/HomePage
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thanks a lot  smiley
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