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"A home for dreamers"
A corrosion-resistant soil moisture measuring station that automates mini 5V submersible water pumps for nursery plant beds.
Resistive soil moisture probes corrode rapidly in moist soil due to electrolysis within weeks, rendering automated agricultural experiments inaccurate.
Utilize corrosion-resistant capacitive soil probes that measure dielectric variance without exposed metallic contacts, coupled with PWM-controlled watering cycles.
ESP32 controller reading analog voltage from three capacitive sensors placed at varying soil depths, triggering a mini DC brushless pump through a logic-level IRLZ44N MOSFET.
Evaluated across three test pots containing sandy loam soil over 14 days under direct sunlight.
Reduced plant water consumption by 35% compared to manual scheduled watering while maintaining steady soil moisture between 40% and 60%.
Deploying deep sleep mode to run the entire unit on a small 2W solar panel with lithium battery storage.