mini hydroponic herb garden battery or usb powered

🌿 Hydroponic Herb Tower – Modular Smart Garden for Urban Spaces

Elevate your home with the Hydroponic Herb Tower, a 3D-printed vertical garden system that brings fresh herbs to life with intelligent automation and minimalist elegance. Designed for makers, urban dwellers, and smart home enthusiasts, this compact garden thrives in even the smallest spaces.

Built entirely from PETG for water resistance and UV durability, the system features stackable growing modules, a submersible pump, and optional full ESPHome + Home Assistant integration. You can choose between battery-powered or USB-powered versions to suit your needs.

There are two primary configurations:

1. Battery-powered smart system, with a choice of a two-part modular tank or a sealed one-piece tank.
2. USB-powered system, optionally controlled with a Sonoff Micro smart plug for hands-off automation.

🅰️ Battery-Powered Smart System

(with either modular 2-piece tank or sealed 1-piece tank)

This fully wireless version runs on a rechargeable Li-ion battery, allowing it to operate independently for weeks at a time. It's ideal for areas without nearby power outlets or where a sleek, cordless aesthetic is preferred.

📦 System Components

1. Base Water Tank (Two Build Options):

• Option 1: Modular Tank – Separate lid and reservoir print, easier to clean and modify.
• Option 2: Sealed Tank – Prints in one piece with internal support structures; sleek but needs support removal post-print.
• Material: PETG
• Features:
  • Space for submersible 3V pump
  • Sealed with silicone for waterproofing

2. Stackable Growing Modules:

• Function: Hold hydroponic grow media (clay pellets, coco coir, etc.) for herbs and leafy greens.
• Design: Compact, vertical, and interlocking.
• Features: Internal irrigation channels, connect with 6mm tubing (8mm outside)

3. Top Electronics Module (Two Sizes):

• Available in two lid sizes to support both slim and thicker batteries.
• Make sure to measure your battery dimensions before printing or assembly.
• Houses:
  • ESP32-C3 🔗 ESP32-C3 – AliExpress
  • MX1508 Motor Driver 🔗 AliExpress
  • Battery (3.7V, 2500–3000mAh)
  • USB-C Charging Module 🔗 AliExpress
  • Adafruit MiniBoost 5V Converter 🔗 Adafruit
• Features:
  • Integrated water distributor in base (glued in place)
  • PETG shell with cutouts for airflow and cable access
  • Important: Battery size MUST match the printed top variant (thicker batteries may not fit into the slim lid enclosure)

4. Water Delivery System:

• Components:
  • 3V Submersible Pump 🔗 AliExpress
  • 6mm tubing (8mm OD)
• Controlled by the motor driver and ESP32

🤖 Automation & Smart Features

• Microcontroller: ESP32-C3, flash-ready with ESPHome
• Software: Fully configurable via Home Assistant
• Motor Driver: MX1508 – supports 2–10V DC pumps
• Voltage Handling:
  • Use a boost converter (MiniBoost 5V) to stabilize battery output
  • Ensure stable 5V to avoid brownouts or ESP32 resets

⚙️ Firmware & Setup

1. Flashing:

• Use web.esphome.io to install firmware onto the ESP32-C3.

2. First-Time Setup:

• Connect to AP:
  • SSID: Hydro AP
  • Password: hydro_tower
• From the web interface:
  • Configure Wi-Fi
  • Set watering cycles
  • Manually trigger pump

3. Home Assistant Integration:

• Automatically appears via ESPHome
• Fully supports scheduled irrigation and remote monitoring

🅱️ USB-Powered System

(with optional Sonoff smart plug)

A simpler, always-powered version using USB instead of batteries. Perfect for desks, kitchen counters, or windowsills with nearby power outlets.

📦 Components

• USB Submersible Pump 🔗 AliExpress
• Sonoff Micro USB Smart Plug (optional) 🔗 BerryBase
• Tuya Smart USB Plug (alternative) AliExpress
• Same 6mm irrigation tubing and stackable grow trays
• No microcontroller or programming required

⚡ Features

• No charging or battery management
• Simple plug-and-play setup
• No ESPHome or firmware flashing needed

• Smart scheduling and automation possible through:

  ✅ Sonoff Micro (Wi-Fi):

  • Control and schedule via the eWeLink app
  • Optional Home Assistant integration using SonoffLAN

  ✅ Tuya Smart USB Plug (Wi-Fi):

  • Works with the Tuya Smart or Smart Life app
  • Easily integrated into Home Assistant using the built-in Tuya integration

🔌 Wi-Fi vs Zigbee Versions

• Wi-Fi smart plugs (Sonoff or Tuya):
  • Recommended for beginners or users without an existing smart home
  • No bridge or dongle required
  • Control via app + optional Home Assistant integration
• Zigbee plugs:
  • Require a Zigbee hub or Zigbee dongle (e.g., Sonoff ZBDongle-E)
  • Suitable for advanced users with existing Zigbee infrastructure

📝 Recommendation
For those new to smart home devices, go with a Wi-Fi smart plug (Sonoff or Tuya). Schedule watering through the app—no coding, flashing, or extra hardware required.

🏗️ Construction Notes

• Material: All 3D-printed parts are designed for PETG, which offers excellent water resistance and UV durability
• Sealing:
  • Use clear silicone to seal pump cable passthroughs
  • Glue water distributor into electronics module
• Supports:
  • Sealed tank version includes internal supports—remove after printing
• Top Module Fit:
  • Two lid sizes available: one for standard slim Li-ion batteries, and one for thicker cells
  • Always check your battery dimensions before selecting and printing the lid version