Web Dot Sight

Once upon a time in a village nearby ... no really: We used a german software to control a dot sight based air rifle target, but that was crap:
http://www.disag.de/downloads/software/reddotview/

So this project is a usable implementation. Protocol was trivial to read so I assume it is meant to be public.
Note that this is a really early state of work and only available in german. No plans to translate so far.

Installation

Install nodejs, git clone this, install node modules:

npm install serialport nedb nodejs-websocket connect serve-static archiver

done. Run it with node node web-dot-sight.js and it will automatically connect to each RedDot the computer knows (they are connected via bluetooth). The WebInterface is accessible at localhost:88.

Raspberry Pi 3

I tested install on a RPi3 and there i needed to

curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install nodejs 

before the actual module installation.
My RPI runs headless so i use forever and a crontab-trick to start web-dot.sight.

sudo npm install -g forever

Then create a script (/home/pi/startup.sh) like this

#/bin/bash
forever start /home/pi/webdotsight/web-dot-sight.js

and add it to the crontab (crontab -e)

# ... add this at the end of the file
@reboot /home/pi/startup.sh

Raspberry Pi 3 onboard BT

I spent quite some days trying to get the onboard bluetooth device working but that seems to be total crap.
Nearly got crazy but suddenly I remembered that old Serial-USB converter cable in one of my treasure chests (aka trashcan).
Works out of the box with that thingy so stopping BT experiments for now.