I'm trying to work on a signalk plugin to output a line of log text (very simple Lat/Lon, COG, SOG, Wind) to a line printer at a given time (every 15min or hour etc), so that if any electrical failure were to occur, the log would exitst in paper form.
I have a 4" wide receipt printer and can send line of text by saving the text to /dev/usb/lp0.
I realise that 90% of what I am tying to achieve is already done by this plugin, so is it possible to add an option to send user defined values from the hourly log output to a user defined location (eg. /dev/usb/lp0)?