A countertop hydroponic pot that grows one plant the passive Kratky way — no pump, no aeration hardware. A 3-inch net cup sits in the lid with its base just touching the nutrient solution; as the roots drink, the water level drops and a growing air gap keeps them oxygenated.
Electronics stay dry, water stays put
The nutrient reservoir is a sealed, leak-tested PETG vessel. The electronics — an ESP32-S3 Feather, a MOSFET driver and a light sensor — live in a separate bolt-on tower that shares no cavity with the water: a reservoir weep drains down the outside into open air, never onto a board. The pH and EC probes drop into wells in the lid, above the waterline.
Real components, honest sourcing
The Feather ESP32-S3, the light sensor and the MOSFET driver are modeled from genuine vendor STEP files. The pH probe is a byitl part built from DFRobot's dimensioned drawing. The EC-probe well is sized to that documented pH envelope and accepts any compatible ~Ø16 mm BNC probe — no dimension was guessed. USB-C in, 5 V throughout.
What's in the pack
Print-ready STL for every printed part, editable STEP for each, a wired BOM, PETG print settings and an overnight leak-test procedure for the reservoir, full assembly and wiring guides, six renders, and a self-contained interactive 3D viewer.