1. What you will build
Build a soil moisture monitoring system that alerts you when your plant needs water.
Guided tutorial
Smart Plant Monitor
Build a soil moisture monitoring system that alerts you when your plant needs water.
beginner · 25 Sept 2026
Difficulty
beginner
Learning complexity
Sections
6
Structured content blocks
Topics
10
Linked learning concepts
Related links
6
Next steps and references
2. Wire the Soil Sensor
Connect the soil moisture sensor signal to A0, with VCC and GND connected to the Arduino.
3. Add the Threshold Control
Connect a potentiometer to A1 so you can tune the dry-soil threshold for different plants.
4. Add Status Outputs
Connect green and red LEDs to pins 10 and 11 through resistors, then connect a buzzer to pin 8.
5. Program the Plant States
Read moisture and threshold values, show green when the plant is hydrated, and show red with an alert when it is dry.
6. Test and Calibrate
Change the simulated moisture level and threshold to verify both states before choosing the final setting.
FAQ
Can I try Smart Plant Monitor in the simulator?
Yes. Use the Open in Lab action to load the guided build in the browser-based simulator.
Next step
Open this tutorial in the lab
Load the guided build in Ayantrik Lab and follow the same components and steps inside the simulator.