The project says it's a Private Project - it's under the header of "Public projects not using Arduino products" (but it is)?
Going in the top right says the project is Public - my only option is to make it private. The project is only missing a schematic, but given that it's just an arduino driving a light strip, I didn't feel like it was complicated enough to warrant that.
OK solved: There's a difference between adding a link to the arduino you used and selecting one via the various pile of arduinos in the drop down. So I selected the arduino close enough.
Hi @ghostoftiber. If you would like to request that the requirement of having one of the Arduino products from the menu in the "Components and supplies" section in order to be published on Arduino Create Hub be documented, you can do so via this form: