Prusa Connect Webcam upload

README.md

From Nunos great instructions

Instructions

1. Go to the Cameras section at https://connect.prusa3d.com
2. Add a new camera.
3. Click the QR code link
4. Click "Start Camera"
5. Open your browser's inspector window and look for the "/snapshot" request.
6. Copy the "Fingerprint" and "Token" headers into the file below.
7. Save prusaconnect_upload_cam.sh from below to /usr/local/bin/prusaconnect_upload_cam.sh and make it executable chmod +x /usr/local/bin/prusaconnect_upload_cam.sh.

Service

To run in the background, create /etc/systemd/system/prusaconnect_upload_cam.service and then start and enable it: systemctl enable --now prusaconnect_upload_cam.service.

prusaconnect_upload_cam.service

[Unit]
Description=Octocam to Prusa Connect

[Service]
ExecStart=/usr/local/bin/prusaconnect_upload_cam.sh

[Install]
WantedBy=multi-user.target

prusaconnect_upload_cam.sh

#!/bin/bash

# Set default values for environment variables
: "${HTTP_URL:=https://webcam.connect.prusa3d.com/c/snapshot}"
: "${DELAY_SECONDS:=10}"
: "${LONG_DELAY_SECONDS:=60}"

FINGERPRINT=""
TOKEN=""
SNAPSHOTURL="http://<octopi>/webcam?action=snapshot"

while true; do
    # grab from octopi
    curl -s "$SNAPSHOTURL" --output /tmp/output.jpg

    # If no error, upload it.
    if [ $? -eq 0 ]; then
        # POST the image to the HTTP URL using curl
        curl -X PUT "$HTTP_URL" \
            -H "accept: */*" \
            -H "content-type: image/jpg" \
            -H "fingerprint: $FINGERPRINT" \
            -H "token: $TOKEN" \
            --data-binary "@/tmp/output.jpg" \
            --no-progress-meter \
            --compressed

        # Reset delay to the normal value
        DELAY=$DELAY_SECONDS
    else
        echo "Octopi snapshot returned an error. Retrying after ${LONG_DELAY_SECONDS}s..."

        # Set delay to the longer value
        DELAY=$LONG_DELAY_SECONDS
    fi

    sleep "$DELAY"
done

I had an issue with the curl command, so I removed the --no-progress-meter line and it's working

Had to change from SNAPSHOTURL="http:///webcam?action=snapshot" to SNAPSHOTURL="http:///webcam/?action=snapshot"

Added an / after webcam

I'm using a standard-Raspberry-PI-OS with a Camera-Modul v3. For this I completly removed the Snapshot-URL-Command and use
rpicam-still -n --width 1920 --height 1080 -q 75 -o /tmp/output.jpg
instead. And it works fine.

uuidgen can be used to generate a Fingerprint. I had issues clicking the QR code because my computer does not have a webcam.

Found this tip at this link.

Thanks for this! One question though...After starting the service the first time do I have to restart it every time I reboot my RPi?

To run in the background, create /etc/systemd/system/prusaconnect_upload_cam.service and then start and enable it: systemctl enable --now prusaconnect_upload_cam.service.

As long as it's added as a service, it should start up at boot. Mine starts up automatically.