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PiWriter

This project is to enable a Raspberry Pi Zero W to control a large (144) NeoPixel array to display one or more images in sequence so that they can be recorded on a long exposure light-trail

At the moment the project is structured into 3 directories

  1. editor - this is the Angular app that allows a device (e.g. phone) to edit the playlists and change the images that the piWriter displays
  2. server - this is the component that serves and recieves playlists and also drives the NeoPixelArray
  3. library - this is the home for the images (.jpg or .json) an the playlists

##Setting up the build environment or Raspberry Pi #Download the tools (GIT and node, ts-node) Note that you will need to install curl too in order to get nvm (node version manager, which is an easier way to manage node. Login as pi

sudo apt-get update
sudo apt install -y git
sudo apt install -y curl
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
source ~/.bashrc
nvm i 10.0.0
nvm use 10.0.0
npm i -g [email protected]
npm i -g [email protected]
npm i -g @types/[email protected]

#Download the project

rm -rf piWriter
git clone https://github.com/ownimage/piWriter.git

#Post install steps

cd piWriter/serverCommon
npm i
cd ../serverEmulator
npm i

If you want to see the output of the server

DEBUG=server*
export DEBUG

Run the Emulator

ts-node src/server

#Build a release This assumes that you are building a release on a PC/other machine for use on the Raspberry Pi.

What the build process does is compile the angular applicaiton in the editor folder, then compile the .ts files in the src directory to .js files in the dist directory.

It also assumes that you have ts-node and typescript installed.

##build editor From the project root direcory ...

cd editor

If building for the PC and serverEmulator ...

rm -r dist
ng build

If building for the RaspberryPi

ng build --prod

##build serverCommon From the project root directory ...

cd serverCommon
rm -r dist
tsc ---outDir dist src/*.ts

##build serverEmulator From the project root directory ...

cd serverCommon
rm -r dist
tsc ---outDir dist src/*.ts

##build serverRPi As there isn't any real code here (only the insertion of the native library), this will be left in javascript.