Soil-moisture calibration study
Compare raw ADC readings across documented dry, damp, and wet samples of one soil type. Repeat probe depth and compaction, graph the results, and explain why the percentages are relative to the chosen endpoints rather than universal soil-moisture values.
What you build in this project
Soil-moisture calibration study is one focused build from the ESP32 Plant Monitoring Learning Kit. It uses the parts listed below to make a working electronics example, then you can combine it with the other projects in the kit.
Compare raw ADC readings across documented dry, damp, and wet samples of one soil type. Repeat probe depth and compaction, graph the results, and explain why the percentages are relative to the chosen endpoints rather than universal soil-moisture values.
Parts used
ESP32U, DIY-002 capacitive soil sensor, breadboard, jumper wires, user-supplied dry and wet soil references
What to check
Wire the parts, upload the sketch from the kit page, then test this project by watching the Serial Monitor or the output behavior.
What you learn
You learn how the controller reads real sensor signals, makes a decision in code, and turns that result into a useful output.
What this project uses
Every item is in the kit — nothing extra to buy.
ESP32 Plant Monitoring Learning Kit
All 7 parts in one box, with this project and 6 more to build from them.
Need only these parts? Order them loose · from AED 86.05
One of each part. Packs (resistor assortment, jumper wires) already hold more than a single build needs. user-supplied dry and wet soil references: included in the kit, ask us for it loose. Backorder parts ship once they arrive — the kit above has every part boxed today. Delivery is AED 20, free on orders AED 150+.
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