This time, I prepared for lighting automation and for monitoring of temperature, and humidity.
I think the light gets a bit hot, so I want to make sure the temperature inside the tent stays within an appropriate.(And if needed, I will add a fan.)
(The seeds are growing well, but it may take 1 or 2 weeks more.)
1. Buy the things!
I bought the following items to set up the automation system.
-1. Raspberry Pi 4
This time, I'm using a Raspberry Pi 4 for automation. I bought it from Akizuki Denshi because it was cheaper than buying it on Amazon.
https://akizukidenshi.com/catalog/g/g114839/?utm_source=chatgpt.com
-2. Sensor
I bought the sensor to monitor temperature and humidity inside the tent.
The SHT31 is a sensor that can measure temperature and humidity.
https://amzn.asia/d/0fcbqTFT
-3. Power supply for the Raspberry Pi 4
It requires a 5V 3A USB-C power supply with an integrated cable.
https://amzn.asia/d/0jh5FxTI
-4. MicroSD card for the Raspberry Pi4
I think the 32GB SD card is enough for the prototype, but I bought a 64GB one because I want to add camera functions later.
https://amzn.asia/d/0fbMhFmL
-5. Raspberry Pi 4 Case
I decided to use a case because I will be using the Raspberry Pi near water.
https://akizukidenshi.com/catalog/g/g114779/
2. Install the OS for the Raspberry Pi.
-1. Install the "Raspberry Pi Imager" into the PC.
You can download it from the following link.
https://www.raspberrypi.com/software/
-2. Insert the MicroSD into your PC.
I used MicroSD adapter to attach it to the PC.
-3. Write the OS image to the microSD card.
Start the Raspberry Pi Imager and select Device (Raspberry Pi 4), OS (Raspberry Pi OS Lite (64-bit)), Storage (microSD card).
Choose the storage device.
Set the hostname for the Raspberry Pi.
Set the user name and password for logging in to the Raspberry Pi.
Configure the Wi-Fi settings and enable SSH.
write the image to the microSD card.
The configuration files were written to the microSD card.
3. Connect with SSH
-1. Connect the power supply.
Connect the power supply and wait for the Raspberry Pi to boot.
-2. Connect with SSH
Run the following command to connect to the Raspberry Pi from your PC.
ssh <username>@<hostname>.local
Run the following commands to confirm the current user, hostname, and working directory.
whoami
hostname
pwd
Make sure that the Raspberry Pi can connect to the Internet.
ping -c 3 google.com
-3. Initial settings
Update the packages.
(It takes about 10 minutes in my environment.)
sudo apt update
sudo apt upgrade -y
sudo apt install -y i2c-tools python3-pip python3-venv
-3. Enable the I2C
open the configuration menu.
sudo raspi-config
choose "Interface Options"
→choose "I5 I2C"
→a message will be shown, please choose Yes.
→You should see the message "The ARM I2C is enabled".
-3. Check the configuration
Reboot the Pi.
sudo reboot
Reconnect
ssh username@hostname.local
Check the I2C device files
ls /dev/i2c*
If you can see "/dev/i2c-1", the setup has worked correctly.
That's all for initial configuration for the Pi.
Next time, I will connect the sensor to the Raspberry Pi.
I realized that the sensor I bought requires me to solder the sensor pins using a soldering iron. Next time, I’ll start by soldering them!
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