Capacitive Soil Moisture Sensor (v2.0)
Check-in with your plant friends, this sensor is great for detecting soil moisture levels!
In stock, ships same business day if ordered before 2PM
Delivered by Tue, 30th of Apr
Quantity Discounts:
- 10-25 $2.66 (exc GST)
- 25+ $2.58 (exc GST)
Tired of wilted plants? Automate your troubles away with this soil moisture sensor!
This sensor reduces corrosion by sensing water capacitively instead of resistively, so water never comes into direct contact with the metal portion of the sensor.
You'll need an analog-to-digital converter to get this sensor working with a Raspberry Pi.
To calibrate the sensor, record the reading when completely dry, and immerse the sensor in water, recording the result (making sure not to get the capacitors and resistors wet).
Map between the two values and experiment with thresholds for each plant!
Specifications
- Operating voltage: 3.3V - 5.0V
- Current Consumption: 5.68mA
- Analog output that varies between 0V and your supply voltage (so if your ADC can only handle 3.3V, supply this module with 3.3V)
Shipping List
- Soil moisture sensor
- Dupont adapter cable
Examples
Raspberry Pi Pico - Micropython
import machine
from time import sleep
soil_moisture = machine.ADC(28)
# A handy function for mapping values
def map_range(x, in_min, in_max, out_min, out_max):
mapped = (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
return int(max(min(mapped, out_max), out_min))
while True:
soil_moisture_raw_reading = soil_moisture.read_u16()
# print(soil_moisture_raw_reading)
soil_moisture_filtered_reading = map_range(soil_moisture_raw_reading, 15000, 50000, 0, 100)
print(soil_moisture_filtered_reading)
sleep(0.5)
Exact shipping can be calculated on the view cart page (no login required).
Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).
We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):
- $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
- $6+ for Standard Post (typically 6+ business days, tracked)
- $10+ for Express Post (typically 2+ business days, tracked)
- Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.
Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.
Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.
International Orders - the following rates are for New Zealand and will vary for other countries:
- $11+ for Pack and Track (3+ days, tracked)
- $16+ for Express International (2-5 days, tracked)
If you order lots of gear, the postage amount will increase based on the weight of your order.
Our physical address (here's a PDF which includes other key business details):
Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia
Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.
Have a product question? We're here to help!
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Videos
View AllGuides
Plant_io Basic Setup Guide | Automatically Water a Seedling Based on Soil Moisture
Plant_io Sensors Guide | Connect Sensors and Log Data
The Maker Revolution
Getting Hands-on with Sensors
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