Optional audible-alert investigation
Characterize the buzzer's current, trigger threshold, and active level before choosing a transistor or driver. Write and compile a separate alert sketch only after the interface is reviewed. This project is not wired or implemented by the supplied main firmware.
What you build in this project
Optional audible-alert investigation 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.
Characterize the buzzer's current, trigger threshold, and active level before choosing a transistor or driver. Write and compile a separate alert sketch only after the interface is reviewed. This project is not wired or implemented by the supplied main firmware.
Parts used
Optional DIY-016 5 V buzzer, ESP32U, and additional user-supplied driver/protection parts selected after measurement
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 84.20
One of each part. Packs (resistor assortment, jumper wires) already hold more than a single build needs. and additional user-supplied driver/protection parts selected after measurement: included in the kit, ask us for it loose. Delivery is AED 20, free on orders AED 150+.
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