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Pi_Zero_W_installation.md

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Driving Hexa from a Pi Zero W

Installing the OS

You will first need to install the Raspian Lite OS. This is sometimes refered to as a "Legacy" OS, as the original Zero can't support 64-bit Raspian. This is best done by installing the OS on a microSD card using the "rpi-imager" utility.

Important note: You will need to edit the configuration options using the rpi-imager tool before you begin to install the OS. In particular you will need to:

  • Configure the wifi
  • Set up the basic user account
  • Turn on SSH for password login

If you skip any of these steps, you will have a sad and have to reimage.

Please use the rpi-imager tool if possible, since the "conventional" ways of setting these options on a freshly-flashed microSD card sometimes change.

Installing the Pi

There are two plugs hanging from Hexa; one is power, one is USB. The one attached to a red plug is the USB one. The power plug goes into the USB connector closer to the end of the board. Plug in power first, then the USB for the panels.

Configuring the Pi

Assuming you set up the Pi with a username "user" and hostname "hexascroller":

ssh user@hexascroller.lan

Now you'll need to install a few tools and utilites.

sudo apt install git pip vim libopenjp2-7
git clone https://github.com/nycresistor/Hexascroller.git
sudo pip install -r Hexascroller/hexaservice/requirements.txt

At this point you will want to edit the file Hexascroller/hexaservice/hexascroller.service and make sure the WorkingDirectory parameter is set correctly for the username you've chosen; in our example,

WorkingDirectory=/home/user/Hexascroller/hexaservice

Then it's time to copy over and enable the service.

sudo cp Hexascroller/hexaservice/hexascroller.service /etc/systemd/system
systemctl start hexascroller.service
sudo systemctl enable hexascroller.service

And that should do it.