Questions tagged [soil-sensing]

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1answer
36 views

RS485 MODBUS ARDUINO: Print multiple response data frame from soil sensor

Hi everyone. I'm guiding myself from tutorial https://how2electronics.com/measure-soil-nutrient-using-arduino-soil-npk-sensor/ I'm using... Hardware components: RS485 Arduino uno Charger 9V (Only for ...
2
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0answers
80 views

Why are my soil sensor outputs starting correct, but turning into nonsense?

I have two Adafruit STEMMA Soil Sensors STEMMA Soil Sensors that I've hooked up to an Arduino nano, telling a solenoid valve when to open. I also have a rain sensor and photoresistor to determine the ...
1
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3answers
64 views

Wire gauge for sensor at long distance

I am planning for a home irrigation system and confused with the wire gauge required the sensors on the plants. The circuit diagram would be something like below: (Please consider the sensors as ...
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2answers
43 views

Soil Humidity sensor value rising over time

So I have this soil humidity sensor placed in a pot. It's about half way in soil, cause that's how deep the pot is. I'm trying to get a pump to trigger once the soil dries out below 20%, but ...
0
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1answer
80 views

Measuring soil moisture and using a vintage DC ammeter as the indicator

I have a vintage Weston Model 506 DC ammeter (it has a range of 0 to 20 amps) that has been sitting in my office and I think it would be interesting to use it as a soil moisture indicator for a (long ...
0
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1answer
346 views

Strange capacitive soil moisture sensor readings

I am in the process of building an automated irrigation system using capacitive soil moisture sensors and Arduinos. My challenge comes in with the soil moisture sensors bought from Banggood.com. I ...
5
votes
1answer
143 views

Measuring soil resistivity and estimating soil equivalent resistance in a long distance

I'm trying to size the Neutral to Ground resistor (NGR) in the Wye of a 138 KV to 4160 V Delta-Wye Transformer. In order to find the proper value I have estimated the charging current of the system by ...
0
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4answers
482 views

Voltage Dividers for a beginner (with respect to soil moisture sensors)

I've just started with electronics and want to make an analogue soil moisture sensor (with Arduino). When I looked online for an explanation of the working, every site said that it works as a voltage ...
0
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2answers
1k views

Soil moisture sensor - Interdigital (FEF) vs Coplanar

I am working on the development of a low cost capacitive soil moisture sensor which uses dielectric permittivity changes to estimate moisture. I found that interdigital capacitor based on FR-4 has ...
0
votes
1answer
144 views

PCB layer material on soil sensors

I am interested in making a DIY PCB soil sensor based on 555 timer IC. The circuit works well but I have problems with regard to manufacturing a durable PCB. As I keep the PCB based soil sensor ...