Soil Moisture and Temperature sensors installation. - Printable Version

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+--- Thread: Soil Moisture and Temperature sensors installation. (/Thread-Soil-Moisture-and-Temperature-sensors-installation)

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RE: Soil Moisture and Temperature sensors installation. - zitoune - 20-08-2016

Hello Werk,

There are two I2C connectors on this interface: can you use both together to plug up to 8 sensors? Or one is to plug the TX board while the second one can be used as a I2C bus extender?

Thanks,
Olivier

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RE: Soil Moisture and Temperature sensors installation. - JT118 - 20-08-2016

(20-08-2016, 06:42)zitoune Wrote:  

(19-06-2016, 16:41)JT118 Wrote:  Here is mine, installed on TX1 (TX0 with rain gauge, anemometer etc)

Very cool JT118 !!

How did you connect the power to this TX1? You have a cable buried in the ground?

I am jealous, so I'll start building my interface as well very soon

Power supply is from mains transformer with cable trailing. (due for burial soon!)

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RE: Soil Moisture and Temperature sensors installation. - werk_ag - 21-08-2016

(20-08-2016, 09:17)zitoune Wrote:  Hello Werk,

There are two I2C connectors on this interface: can you use both together to plug up to 8 sensors? Or one is to plug the TX board while the second one can be used as a I2C bus extender?

Thanks,
Olivier

Hi Olivier,

Currently the WeatherDuino Pro2 software only support the use of one Soil Moisture / Leaf Wetness interface.

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RE: Soil Moisture and Temperature sensors installation. - zitoune - 21-08-2016

(21-08-2016, 05:57)Werk_AG Wrote:  Hi Olivier,

Currently the WeatherDuino Pro2 software only support the use of one Soil Moisture / Leaf Wetness interface.

Thanks Werk.

Is this interface meant for further use with the Weatherduino 4Pro ?

Regards.

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RE: Soil Moisture and Temperature sensors installation. - werk_ag - 21-08-2016

(21-08-2016, 06:00)zitoune Wrote:  Is this interface meant for further use with the Weatherduino 4Pro ?

It is marked as 4Pro! I think just to give it a cool name

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RE: Soil Moisture and Temperature sensors installation. - hornychz - 19-09-2016

Hi Werk_AG,

I have too questions to you, if you can help me (or with the second question another else):

1) this not so important: Is it possible to post the Soil Moisture / Leaf Wetness Interface schema?

2) this more important for me: when I study P82B715 datasheet to manage the Rx values, I found Fig. 9 in the chapter 8.2 = Quick design-in point-to-point/multi-point information for 5 V bus. They recommend to put resistance 4.7kOhm on each I2C-bus (SDA and SCL) and on each end of the cable resistance 470Ohm (buffered bus, LSDA, LSCL). It would be satisfactory up to long 30 or maybe 50m of UTP cable Cat5e. Do you agree, please, with this idea?



My installation will have 8 m of outdoor UTP Cat5e cable ...

Regards

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RE: Soil Moisture and Temperature sensors installation. - zitoune - 19-09-2016

(19-09-2016, 15:59)hornychz Wrote:  1) this not so important: Is it possible to post the Soil Moisture / Leaf Wetness Interface schema?

This is here hornychz

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RE: Soil Moisture and Temperature sensors installation. - hornychz - 19-09-2016

(19-09-2016, 16:50)zitoune Wrote:  This is here hornychz

I obviously totally blind ...
Thank you!

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RE: Soil Moisture and Temperature sensors installation. - hornychz - 19-09-2016

(19-09-2016, 16:50)zitoune Wrote:  This is here hornychz

... and maybe it is all at once the answer to my second question ... ??

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RE: Soil Moisture and Temperature sensors installation. - zitoune - 19-09-2016

(19-09-2016, 17:25)hornychz Wrote:  

(19-09-2016, 16:50)zitoune Wrote:  This is here hornychz

... and maybe it is all at once the answer to my second question ... ??

Werk mentions that calculating the correct values of those 2 resistors and the 2 on the TX is important for long wires indeed

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