Unit Earth
Description
EARTH unit is a Soil Moisture Sensor for measuring the moisture in soil and similar materials.
The soil moisture sensor usage is pretty straight forward, the two large exposed pads function as probes for the sensor, together acting as a variable resistor.
The higher moisture that is in the soil means the better the conductivity between the two so that the sensor will result in a lower resistance, and a higher SIG out.
You can read the moisture in soil by using the ADC. Inside this Unit we've added an extra potentiometers to change the measurement range.
Features
- Adjustable threshold, including 10K adjustable resistor
- Analog & Digital output
- GROVE interface, support UIFlow and Arduino
- Two Lego-compatible holes
Include
- 1x EARTH unit
- 1x GROVE Cable
Applications
- Potted soil moisture monitoring
Specifications
| Resources | Parameter |
|---|---|
| Net weight | 5g |
| Gross weight | 18g |
| Product Size | 64.4*24.1*8.1mm |
| Product Size | 136*92*12mm |
Electrode of the unit is not anti-corrosive, or waterproof, for POC purpose only. Pls do NOT put it in humidity environment for a long while.
EasyLoader
- After downloading the software, double-click to run the application, connect the M5 device to the computer through the data cable, select the port parameters, click "Burn" to start burning. (For M5StickC burning, please Set the baud rate to 750000 or 115200)
PinMap
| M5Core(GROVE B) | GPIO36 | GPIO26 | 5V | GND |
|---|---|---|---|---|
| EARTH Unit | AnalogSignal Pin | DigitalSignal Pin | 5V | GND |
Schematic
Mdouel Size
Example
Arduino
The code below is incomplete. To get the complete code, please click here
UIFlow
Video
EARTH Tutorial - Monitor vase soil moisture 1