Beacon Scanner + Repetier

ericsson315

Hey there,

I am trying to install a beacon sensor to my klipper printer, but I can't even download the beacon-module through a regular ssh session.

It starts the download

"cd ~
<a rel="nofollow" target="_blank" href="https://docs.beacon3d.com/quickstart/#__codelineno-0-2"></a>git clone https://github.com/beacon3d/beacon_klipper.git
<a rel="nofollow" target="_blank" href="https://docs.beacon3d.com/quickstart/#__codelineno-0-3"></a>./beacon_klipper/install.sh"<br/><br/>But it says: <br/><br/>"beacon: klipper or klippy env doesn't exist"<br/><br/>If I do ls dev by id it shows the beacon correctly, but it seems that I can't talk to it at all. <br/><br/>Has anyone set up a Beacon with Repetier? How did you manage to do it. I'm a bit lost. <br/><br/><br/>

German answers welcome too.

Repetier

I never did this by I think your problem is this:
"beacon: klipper or klippy env doesn't exist"

You must activate correct klipper environment. For server the klipper installations are all in /opt/klipper/<printer slug name>

I guess after activating the env it would work better.
Or do you even need to unpack this inside klipper sources?

ericsson315

I tried installing it in /opt/klipper/<printer slug name> but I don't have permission.

Apparently it needs to be unpacked inside klipper sources.

In the past I have only done the beacon install on printers running mainsailos, here the process was incredibly simple, because you can simply paste the command after login through shell.

Repetier

It is easier if you run it as user owning and running klipper. Enter
sudo -i sudo -u repetierserver bash
and you are user repetierserver and have no permission issues any more. Same installation process just adapt folders to the one used. We can have multiuple klipper instances in parallel so we need different solution to handle it and also it is better to run klipper as same user than server so there are no permission issues.

ericsson315

Thanks, I was able to install into /opt/klipper/<printer slug name> now, however, it still returns, that the klipper or klippy env doesn't exist. (Even though it definitely exists here)

When looking into the folder through winscp I can see that most folders (test, src, scripts, lib, klippy-env, klippy, docs, config) have "rwx r-x---" rights, but the new beacon_klipper folder that was installed into the directory has it set to "rwxr-xr-x".

Unfortunately I'm not sure if this has anything to do with it. As of right now the printer still reports, that "beacon" is not a valid config section.

Repetier

As long as user is repetierserver only first 3 permissions letters are relevant. others are group and rest of the world.

Looking into installer

KDIR="${HOME}/klipper"

KENV="${HOME}/klippy-env"

BKDIR="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"

if [ ! -d "$KDIR" ] || [ ! -d "$KENV" ]; then

echo "beacon: klipper or klippy env doesn't exist"

exit 1

fi

You get the error when you did not set HOME variable correctly. So run
export HOME=/opt/klipper/<slug>
before running installer and it should find the env correctly.

ericsson315

Thanks, just got back from vacation. Tried to tackle this at work again, but "export HOME=/opt/klipper/<slug>" does absolutely nothing and it still says, that "klipper" or the "klipper env" doesn't exist.

Repetier

KDIR="${HOME}/klipper"
in the script is wrong here. Should be
KDIR="${HOME}"

when you use
export HOME=/opt/klipper/<slug>

I think. that is already the klipper dir with klippy-env as subdirectory.

ericsson315

Thank you!

That did the trick for the initial install.

Unfortunately, because there is no update manager for beacon in Repetier, I need to manually pull the update.
When running the update ./update_firmware.py update all it tries to do a sudo dfu firmware upload. Because I don't have the password, the update fails. Anything you can think of, that I can do here? It won't let me start the update without running it as repetierserver..

Repetier

There is no password for that user. You need to add dfu to list of sudoers. See file
/etc/sudoers.d/repetierserver-perms
how it looks and add one mor eline withh full path to dfu.

ericsson315

Great, but how do I go about figuring out this "full path to dfu"?

Repetier

if it is in your path enter
type dfu
to see where the file is stored. I mean enter complete path starting with / to the dfu executeable. If it is not in linux path because it is in the klipper folder somewhere youe need to find where. In my klipper/linux it does not exist.

ericsson315

Thanks, but I'm not sure what you are saying. DFU is a method to directly upload firmware to the scanner.

Repetier

Looking into the code it actually calls dfu-util an external command so full path needed in sudoers list seems to be /usr/bin/dfu-util where it is located on my pi at least.

Repetier

To add it run as user pi
sudo echo "repetierserver ALL=NOPASSWD: /usr/bin/dfu-util" >>/etc/sudoers.d/repetierserver-perms

ericsson315

Thank you!

Running

sudo echo "repetierserver ALL=NOPASSWD: /usr/bin/dfu-util" >>/etc/sudoers.d/repetierserver-perms

returned a permission error, but I was able to edit the file via winscp. After running the update command it flashed fine. It is now connected to the printer.

Again, thanks for the help. Highly appreciated. :-)