An automated plant desktop environment monitoring and watering system built with MicroPython. It uses an ESP32 microcontroller simulation to maintain optimal plant climate conditions through heat safety logic, a humidifier cycle, and timed soil watering loops.
Shipping Part 1 of the Smart Desktop Plant ICU Built a full plant automation system on an ESP32 using MicroPython, simulated on Wokwi. The setup is an ESP32 wired to a DHT22 sensor with 4 LEDs representing the hardware a grow light, water pump, mist maker, and a soil health indicator. Instead of a serial monitor I gave each LED its own blink language so you can read the whole system at a glance:— Purple solid = daytime, grow light running— Blue 3 flashes then solid = pump firing a watering burst— Yellow solid = misting because humidity dropped below 65%— Red blinking = soil getting low, pump about to fire— All 4 rapid flash together = heat emergency, everything locks down The code handles 3 systems at once. The watering runs automatically as the soil moisture decays over time. The mister turns on at 65% and only shuts off at 75% prevents the relay from clicking on and off constantly. The grow light follows a day/night cycle and cuts instantly if temperature goes above 32°C.All the safety logic is interlocked the pump is blocked during a heat emergency, and the mister only runs during the day so wet leaves at night don’t cause mold demo https://wokwi.com/projects/467922476236614657 — click the DHT22 sensor and drag the sliders to trigger everything in real time. Part 2 is the physical build — a sealed acrylic cabinet with real sensors, a water pump, and a camera for time lapse photography.
