How to Build and Deploy a Soil Moisture Sensor
Posted by UBiBot USA on Sep 23rd 2022
Soil moisture sensors are a great way to monitor how much water your plants are receiving, and they can also help you decide when to water them. Building and deploying a soil moisture sensor is a simple process that requires only a few parts and tools.
Soil moisture is an important part of growing crops, and when growing produce, you want to know how much water you need to give it. Soil moisture sensors are relatively easy to build and can be deployed in the field for long periods.
Soil moisture sensors are typically made of a few simple parts:
●A metal sensing element is usually made from metal, such as copper or iron.
●A metal plate that acts as an electrical conductor.
●Some conductive gel or paste.
When this device is buried in the ground, it will send an electric current between its two electrodes at different rates depending on how wet or dry the soil around it is.
The first step in building your soil moisture sensor is choosing the materials you want. The most common variation uses copper wire as the sensing element and iron filings (finely ground iron) as its plate. However, other options for both parts may better suit your needs. You can also use other types of metal filings instead if you wish.
But how do you know what's going on with your soil? First, you'll need to buy and deploy a soil moisture sensor, attach it to a stake, and then deploy that stake in your garden or lawn. Then you need to monitor the sensor using a mobile device.
Step 1: Purchase a Soil moisture sensor
The first thing you'll need is a soil moisture sensor. You can find these at any home improvement store or garden supply store. They typically come in packs of two or three sensors, so be sure to purchase enough for your entire garden or lawn if necessary. You'll also need stakes or wood for attaching the sensors to the ground.
Step 2: Attach the sensor to a stake.
We used wire cutters to clip off about an inch of the sensor's lead wire, then stripped off about half an inch of insulation from each end with our wire strippers. Next, we soldered the stripped leads together and attached the sensor to a wooden stake using duct tape (you can also use hot glue). Finally, we screwed the stake into the ground using a drill and screwdriver.
Step 3: Deploy the stake in your garden or lawn
Deploy the stake in your garden or lawn by burying it about one foot deep into the ground where you want it placed permanently (if you're building a temporary sensor, stick it in the ground). The sensor should be close enough to the surface that you can easily access it once you've deployed it but far enough underground so that it doesn't get damaged by animals or other sources of damage such as lawn mowers).
Step 4: Monitor the sensor using a mobile device.
You're now ready to start monitoring your soil moisture levels! Download the mobile app, connect your phone to your WiFi network, and watch as it displays real-time information about your garden's soil moisture levels.
To monitor the sensor, you need a mobile device that has Bluetooth capability and can run apps designed for Android or iOS platforms. If your mobile device does not have Bluetooth or app capabilities, you will need to purchase a separate reader device with these features. The reader will connect with your mobile device via Bluetooth so that you can view data from your soil moisture sensor on it.