Shell

This project is a bootstrapper for downloading, setting up, and running a Node.js application. It automates the process of fetching the latest version of an app from a remote URL, unzipping it, installing dependencies, and starting the app.

Features

• Automatically downloads the latest version of the app.
• Cleans up old versions before setup.
• Installs dependencies and starts the app.
• Compares the current app version with the latest version to decide whether to update.

Setup

Prerequisites

• Node.js and npm installed on your system.
• Ensure you have access to the URLs specified in the .env file.

Steps

1. Clone this repository:

   git clone <repository-url>
   cd shell

2. Install dependencies:

   npm install

3. Configure the .env file (see below for details).

4. Start the bootstrapper:

   npm start

Configuring the .env File

The .env file contains environment variables required for the app to function. Below is an explanation of each variable:

• APP_URL: The URL to download the zipped Node.js app.
• INFO_URL: The URL to fetch the latest version information of the app.

Example .env

API_URL=https://app.begrabby.com
SHELL_ID=abc-123-def-456
SENSOR_CODE=123 # password for the shell

PM2 setting up

• Install PM2:

npm install pm2@latest -g

• Run the app with the name

pm2 start app.js --name MY_APP_NAME

• Set the startup process: https://pm2.keymetrics.io/docs/usage/startup/

pm2 startup
# Then copy/paste the displayed command onto the terminal
pm2 save

Info Template

The info-template.json file is used to define the structure of the version information fetched from the INFO_URL. Below is an example:

{
  "version": "2.0"
}

This file ensures that the app can compare the current version with the latest version available remotely.

Troubleshooting

• If the app fails to start, ensure the .env file is correctly configured.
• Check your internet connection if the app cannot download the zip file.
• Ensure Node.js and npm are installed and accessible in your system's PATH.

License

This project is licensed under the ISC License.

Setup Lap Counter:

Install Raspberry Pi OS Lite

Useful commands:

Connect to wifi:

sudo nmcli dev wifi connect "Pineapplewakepark" password "3004PwP22"
nmcli dev status
nmcli device wifi list

IP info:

hostname -I

Node:

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
nvm install node

SSH shell zipped:

scp ./shell.zip grabby@192.168.1.129:~

Unzip:

sudo apt update
sudo apt install unzip -y
unzip shell.zip

PM2 Start:

pm2 start index.js --name <NAME>

--- COlors

Orange - GPIO21 - ForkMaster Yellow - GPIO20 - CarrierOne Green - GPIO26 - Carrier Blue - GPIO16 - Master Purple - GPIO19 - Emergency Stop Grey - GPIO13 -