Hi guys,… just in the process of setting my emontx v4 up,… and reading the instructions,… got to the connect via serial to chrome etc,… and things failed,…
figured this maybe a permissions issue,… so added my local user to the ‘dialout’ group ,… comms enabled problem fixed.
so basically, a requirement to Linux users, when trying to serial connect to emontx V4,… local user must be added to dialout group,. the following command should fix, followed by a reboot
Yes indeed Bill you are correct,… but I was just following the path of ‘KIS’, with no ambiguity ,… i like my setup guides to be ‘idiot proof’,… to help people like myself…
Hi Brian,… This was 22.04 Ubuntu install, ( on an intel nuc )…using latest chrome browser.
I have since tried the same thing on my Open-energy Raspberry Pi , used for logging etc,… and this connected without issue.
Hope that helps
Rgds
Quite correct… not an issue with the emontx v4,… its if one uses a ubuntu desktop install,… and tried to create a serial comms link to the emonTx v4,… the i/f just sits there, and does nothing.
The dialout group came to mind as I have experienced this issue with serial comms before, with previous ubuntu installs.
The USB-C connection on the emonTx4 only works in one orientation for data transfer (usually smooth face up). If the config tool doesn’t connect then invert the orientation of the plug.
I would add,…
If connecting via a Linux Ubuntu ( or similiar ) based machine and connection apparently fails,… check that your current user has dialout access granted,
type:- ‘grep dialout /etc/group’ to check, expect response
dialout:x:20: where local_user is not listed,
if current user not referenced in output above
type:- sudo adduser local_user dialout to resolve followed by logout, and back in or reboot
type:- ‘grep dialout /etc/group’ to check, expect response
dialout:x:20:local_user where local_user is now listed.
Other Linux system use similar commands, but check.