A 3D printed IoT desktop hydroponic garden controlled through a react native mobile application

Hydroponics

• Hydroponics refers to the art of gardening without soil.
• Hydroponics can provide a controlled environment supplied with the needed amount of oxygen, water, and nutrient rich solutions.
• Hydroponics can be used to grow flowers, vegetables, and herbs.

Benefits of Hydroponics

• A benefit of using hydroponics compared to traditional agriculture is that hydroponics needs 90% less water, and allows us to control how much light needed and for how long, and the pH level of the water can be monitored and adjusted based on the needed environment, which accelerates the plants growth to half the time.
• Plants need the soil to supply them with water and nutrients, but they don’t need it to photosynthesize. Hhydroponics the allows needed nutrients to be dissolved in water and then can be applied directly to the root of the plants either by flooding, misting or immersion.
• This helps to reduce variability in plant growth due to a controlled environment where no animals, pests or environmental conditions could affect plants growth.

Design

• Our designed was inspired by different smart garden products, but we were aiming to provide a more durable size of a portable hydroponic garden that can be easily moved and mainly fits anywhere.
• This product could be ideal for a kitchen, office, or basement, focusing on growing as much as we can in a small footprint.
• This product features a modular design that can allow growth all year around in suboptimal light conditions.

Software

How It Works

• The mobile application is written in react native, and sends text instructions to a PubNub channel based on user inputs, the deviceitself is programmed using python on a raspberry pi 4b.

Threading and Parallelism

• Parallelism refers to performing multiple computations at the same time. The main execution splits into multiple threads, as illustrated by the image below.

• There are two main processes (threads) at work in the program.
• The first thread is the method handle_pubnub_message (listener, channel). This method will listen for a message on a specified PubNub channel, and then respond to it accordingly.
• The second thread is called handle_schedule(). This handles the scheduling feature by checking if on/off times are set. Following this, if the current time is equal to the specified on/off time, the program will output the correct action, either turning off the led lights, or turning on the led lights.
• Pseudocode follows: If (current time == ON_TIME): turn on led lights

Hardware

Components

EP-0099 4 Channel Relay HAT	Raspberry Pi 4B	5V USB Water Pump	LED Strip

Schematic

Final Design

Future Considerations

PH Sensor	Ultrasonic Sensor
A PH sensor can be implemented for PH value detection and to control and monitor the needed PH value for the plants.	An ultrasonic sensor can be used to detect how much water is in the reservoir and how much water is needed. This information can be used to help the user calculate the quantity of nutrients to be added to the solution.

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My personal nvim configuration.

Neovim Configuration

A comprehensive Neovim configuration with lazy.nvim plugin manager, featuring LSP support, code completion, formatting, linting, and various productivity plugins.

Features

• LSP Support: Lua, Python, TypeScript/JavaScript, and Go with mason.nvim
• Code Completion: nvim-cmp with LSP and snippet integration
• Formatting: conform.nvim for code formatting
• Linting: nvim-lint for code quality checks
• Syntax Highlighting: Treesitter for advanced syntax parsing
• UI Enhancements: Bufferline, lualine statusline, themery theme switcher
• Productivity: Flash motion, which-key keybinding helper, undo tree
• Git Integration: Gitsigns, fugitive, diffview
• AI Assistance: GitHub Copilot integration

Installation

1. Clone this repository to your Neovim config directory:

   git clone <repository-url> ~/.config/nvim

2. Launch Neovim to install plugins automatically via lazy.nvim

3. Run :MasonInstall to install LSP servers as needed

Keybindings

• Leader key: <Space>
• File explorer: <Space>e (Oil)
• Git status: <Space>gs (Fugitive)
• Search and replace: <Space>sr (Grug-far)
• Keybindings help: <Space>? (Which-key)

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A minimalistic set of dotfiles that everyone can use. Works out of the box.

Dotfiles

Personal dotfiles managed with chezmoi.

Quick Start

# Apply changes from this repo to your home directory
chezmoi apply

# Edit a dotfile (e.g., .zshrc)
chezmoi edit ~/.zshrc

# See what would change (dry run)
chezmoi diff

# Apply changes after editing
chezmoi apply

Workflow

Adding New Files

# Add a file to chezmoi
chezmoi add ~/.config/newfile

# Edit it
chezmoi edit ~/.config/newfile

# Apply changes
chezmoi apply

Making Changes

# Edit files directly in chezmoi source directory
cd ~/.local/share/chezmoi
nvim dot_zshrc

# Use chezmoi edit command if necessary
chezmoi edit ~/.zshrc

# Preview changes
chezmoi diff

# Apply to home directory
chezmoi apply

# Commit changes as normal
git add .
git commit -m "Update zsh config"
git push

Syncing to Another Machine

# Pull latest changes
cd ~/.local/share/chezmoi
git pull

# Apply to home directory
chezmoi apply

File Naming

Chezmoi uses prefixes to determine how files are managed:

• dot_ → . (e.g., dot_zshrc → ~/.zshrc)
• executable_ → makes file executable
• private_ → sets permissions to 600

What’s Included

• Alacritty: Terminal emulator config
• Neovim: Editor setup (bob version manager)
• Zsh: Shell configuration with zinit, starship, fzf, zoxide
• Starship: Shell prompt theme
• Lazygit: Git TUI configuration
• Tmux: Tmux configuration

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