MrNegativeTW / DHT11_WebClient

Display DHT11 value

植物溫濕度觀測站

別人的專題。

Preview

Features

• 顯示目前觀測數值
• 每 30 分鐘自動記錄數值

Requirements

• Raspberry Pi
• DHT11/ DHT22
• Python 3.7 and above

Setup

Hardware Install

Install MariaBD (a.k.a MySql)

1. Install

   sudo apt update
   sudo apt install mariadb-server
   

2. Login to MariaDB (Default password is your RPi's password)

   sudo mysql -u root -p
   

3. Create a user for this project

   CREATE USER 'dht22'@'localhost' IDENTIFIED BY 'password';
   

4. Create DATABASE

   CREATE DATABASE dht22 CHARACTER SET 'utf8mb4' COLLATE 'utf8mb4_unicode_ci';
   

5. Permission 777, wow

   GRANT ALL PRIVILEGES ON dht22.* TO 'dht22'@'localhost';
   FLUSH PRIVILEGES;
   

6. Create TABLE

   // Switch to database
   use dht22;
   
   // Create table
   CREATE TABLE `history` (
   `id` INT NOT NULL AUTO_INCREMENT,
   `time` DATETIME NOT NULL,
   `temp` INT NOT NULL,
   `hum` INT NOT NULL,
   `dirtHum` INT NOT NULL,
   PRIMARY KEY (`id`)
    ) ENGINE=InnoDB;
   
   // Modify time col
    ALTER TABLE  `history`  MODIFY `time` datetime DEFAULT CURRENT_TIMESTAMP
   

Install the main part

1. Install dependencies

   pip install -r requirements.txt
   or
   pip3 install -r requirements.txt
   

2. Start the server

   python main.py
   or
   python3 main.py