Jeffs OctoPrint and Cnc.Js - LCD question

Software / Firmware
1

First, i didn’t see a category in software/firmware for CNC.js or Octoprint…so general it is

Love the cnc.js and octoprint image that Jeff created. I am wondering if anyone out there has added the 7 inch pi lcd to it? I thought about running the touch ui in octo like i do for my ender 3 but the interface for tinyweb looks more cnc friendly.
tinyweb

In my intial testing i get the node.js error EADDRINUSE 0.0.0.0:8000
when trying to install it per these instructions: https://github.com/cncjs/cncjs-pendant-tinyweb

I also must add that i am a windows weenie and only a hack in linux. with that said, any advice?

Thanks

2

The key is to put the tinyweb code somewhere and then edit the command line that already runs cnc.js to point to your tinyweb.

cnc -m /pendant:/home/tinyweb/src

I am doing this from memory, but the location of the default command is in /etc/defaults/cncjs. If you are happy hacking around, that is where you would put the - m part. Then, you would need to reboot, or restart the cnc.js service.

A while bunch of typos can make things not work, so be ready to troubleshoot or reflash it if it gets borked.

3

Jeff, you were correct. cncjs -m /tinyweb:/home/tinyweb/src needed to be run once you killed cncjs, which natively runs on 8000. my physical setup is a bit bulky but seemed to cut with no problem. I used a single power source and a buck converter for the pi+lcd.

20200407_180558
20200407_1805584032×3024 795 KB
20200407_180724
20200407_1807244032×3024 1.43 MB
20200407_210432
20200407_2104322605×3378 321 KB
20200407_210502
20200407_2105024032×3024 1.54 MB

1 Like
4

Very cool.

You can change the arguments the default cnc.js uses. It is in /etc/default/cncjs.

There is a line like this:

DAEMON_ARGS="--host=$HOST --port=$PORT"

Which you can add -m /tinyweb:/home/tinyweb/src to.

It would then be:

DAEMON_ARGS="--host=$HOST --port=$PORT -m /tinyweb:/home/tinyweb/src"
5

good to know. is used the defaults and added the “service” to pm2 for cnc.js tinyweb
i then added the “application” (next is all by memory) chromium full screen http://127.0.0.1:8000/tinyweb to the startup location. i told you windows weenie! all i know it works.