There are flows on flows.nodered.org such as this https://flows.nodered.org/flow/2b6c2f0d7a316f1a6831782d33a0d40c
which shows an example of using raspistill and then sending to the dashboard.
You can also base64 the image once in Node-RED and then send via MQTT.
Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
The OpenJS Foundation | Terms of Use | Privacy Policy | OpenJS Foundation Bylaws | Trademark Policy | Trademark List | Cookie Policy