Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | Capacitive |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switch (0 and 1) |
| Detection Area | Approx. 3cm x 1cm |
| Adjustable Sensitivity | Yes, via Potentiometer |
| PCB Coating | Gold Immersion Process |
| Corrosion Resistance | High (Nickel-free) |
| Indicator LED | Power and Status LEDs included |
| Mounting Hole Diameter | 3mm |
| Application | Smart Agriculture, Garden Automation |
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect for Raspberry Pi projects
Connected directly to GPIO pins without any extra components needed. The digital output is clean and stable. Highly recommend for anyone building a smart irrigation system.
Anonymous
Mar 29, 2026
Rating: 4/5
Solid build quality
The PCB feels sturdy and the coating looks professional. It has been in my tomato planter for two months now with no signs of degradation. Works as advertised.
Anonymous
Mar 28, 2026
Rating: 5/5
Excellent sensitivity range
I was worried it might be too binary, but adjusting the sensitivity allows for great control over when the alert triggers. Great component for hobbyists and pros alike.
Anonymous
Mar 27, 2026
Rating: 5/5
Reliable for indoor pots
Using these for my indoor herb garden automation. They are sensitive enough to detect moisture changes quickly. The gold plating really does prevent the rust issues I had with cheaper sensors.
Anonymous
Mar 25, 2026
Rating: 5/5
Much better than resistive sensors
Finally switched from the old resistive probes to this capacitive module. The difference in longevity is night and day. No more corrosion after a few weeks in the soil. Works perfectly with my ESP32 project.
Anonymous
Mar 06, 2026
Rating: 4/5
Great value, easy to calibrate
The potentiometer makes it very easy to set the threshold for when the relay triggers. I use it to control a small water pump. Only giving 4 stars because the documentation could be slightly clearer on wiring diagrams.
Q: What is the expected lifespan compared to resistive sensors?
A: Because this uses capacitive detection rather than exposed metal electrodes that pass current through the soil, it avoids electrolysis and corrosion. Lifespan is significantly longer, often lasting years depending on soil acidity.
Q: How do I adjust the sensitivity threshold?
A: There is a blue potentiometer on the back of the module. Use a small screwdriver to turn it clockwise to increase sensitivity or counter-clockwise to decrease it while monitoring the status LED.
Q: Does this module come with jumper wires?
A: The package typically includes the sensor module only. Jumper wires are sold separately, but standard female-to-female or female-to-male wires will fit the pin headers perfectly.
Q: Is this compatible with 5V Arduino boards?
A: Yes, this module operates comfortably within the 3.3V to 5V DC range, making it fully compatible with standard 5V Arduino boards like the Uno and Mega.
Q: Can this sensor be submerged completely in water?
A: While the sensor is coated for corrosion resistance, it is designed for insertion into soil, not full submersion in water for extended periods. Please ensure the electronic components on the top of the PCB remain dry.
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