RoadTest: Raspberry Pi 3 Model A+
Evaluation Type: Development Boards & Tools
Did you receive all parts the manufacturer stated would be included in the package?: True
What other parts do you consider comparable to this product?:
What were the biggest problems encountered?: 1. No Power Adapter with the kit 2. No USB Cable with the kit 3. No Micro-SD Memory Card with the kit
The Raspberry Pi 3 Model A+ is the latest product in the Raspberry Pi 3 range, with the following technical specifications:
The Raspberry Pi 3 Model A+ has the same mechanical footprint as the older Raspberry Pi 1 Model A+.
A complete product brief available here: https://www.raspberrypi.org/app/uploads/2018/11/Raspberry_Pi_3A_product_brief.pdf
Now, you need to download an Operating System for the Raspberry Pi.
From your PC / Laptop, use Internet Browser & navigate to the website:
Download the latest Raspbian Sketch with Desktop (or) Raspbian Buster with Desktop Operating System image file in compressed format (zip)
Now, you need to burn the download OS image (as bootable) on the memory card.
Download a freeware utility called 'Win32 Disk Imager v1.0' from https://win32-disk-imager.en.uptodown.com/windows
Install the Win32 Disk Imager on the PC / Laptop, where you have downloaded the Raspbian OS image in the earlier step.
Open the WIn32 Disk Imager.
Under 'Image File' select the (that you downloaded earlier) & Under 'Device' select the USB Card Reader.
Then, click on the 'Write' button & wait till it shows 'Write Successful' confirmation message.
Now, exit the Win32 Disk Imager utility & stop the USB Card Reader, unplug the Card Reader & remove the Micro-SD memory card.
Insert the Micro-SD memory card (having the Raspbian OS image) into the Raspberry-Pi.
Various Display Options for Raspberry-Pi
a. Connect the Raspberry-Pi to a TV, using a HDMI cable on Pi.
b. Connect the Raspberry-Pi to a 3.5" (or) 5" (or) 7" TFT display, using a UC-431 HDMI connector on Pi.
c. Connect the Raspberry-Pi to a 3.5" (or) 5" (or) 7" TFT display, using the 40pin GPIO connector on Pi.
(directly mount the tft on Pi's GPIO [or] use a 40pin HDD cable)
d. Connect the Raspberry-Pi to a 3.5" (or) 5" (or) 7" TFT display, using the DSI ribbon cable to the DSI slot on Pi.
Now, Power-ON the Raspberry-Pi.
Being first-time boot (on newly installed OS), you would be prompted by the Setup to change the password.
Next, the Setup would give you an option, to Update the Software (which is an optional step).
If 'skipped', the software update can be done at later stage also (using CLI command).
Setup will now, prompt you to 'Set Country / Language / Timezone'.
Next, the Setup will try to calibrate the display screen.
Next, the Setup will search for available Wi-Fi Networks in the range, which is an optional step.
If your Wi-Fi Network is listed & if you want to connect it to the Pi, then specify the SSID password of your Wi-Fi network.
Benchmark result comparison of all the Raspberry Pi models.
Weather Station using Sense-Hat on Raspberry-Pi 3 Model A+
The Sense-Hat is an add-on board for Raspberry Pi, made especially for the Astro Pi mission, that allows the Raspberry Pi to sense the world around it.
The add-on board allows you to make measurements of temperature, humidity, pressure, and orientation, and to output information using its built-in LED matrix.
On your Raspberry-pi with sense HAT, run the command lines below to update/upgrade:
sudo apt-get update
sudo apt-get upgrade
Next, clone the Weather_Station package from GIT repository:
Next, install the packages needed for the scripts to execute
sudo apt-get install python3-flask
sudo apt-get install sense-hat
To test everything is working change directories to the newly downloaded folder and execute using Python 3
The 8x8 LED matrix should light up and begin scrolling sensor information, from weather.py
web_app.py takes the same data as weather.py but instead of displaying it on the LED matrix it creates a web server and displays it via the web using flask.
So, you can also view the sensor information using the web browser and pointing it to port 5000 of the raspberry pi's IP Address
(from any device (PC/Laptop/Mobile) connected to the same Wi-Fi network)
To run this Weather Station scripts automatically at boot, update the bash scripts in the utils folder and make them executable.
Then make them executable
sudo chmod +x launch_weather.sh
sudo chmod +x launch_web_app.sh
Test the files
Lastly add them to cron
sudo crontab -e
ctrl+x to exit and Y to save.
Then enter the command below to reboot
sudo reboot -h now
The raspberry pi should reboot and execute both scripts on startup!
! Hope this roadtest review was useful to build from scratch & complete, with a project !