I've been thinking about this issue more deeply lately - "How do you take a SMD PCB project + firmware and turn it into something that hobbyists and end users can buy as a kit or ready-made?"
There is no easy answer. I don't want to turn my small apartment into a warehouse nor do I want to be soldering + shipping boards all day so that I can earn the equivalent of $1/hr. Turnkey services like Elecrow might work, but they will take all the profit. For now, these projects are "family-only" 😞
@fast_code_r_us it would be my dream to start sch a business myself. But I doubt this would be profitable in mid-Europe. Manufacturing mini-series of PCBs. PCBs could be manufactured overseas. I'd love to have and run my own #LumenPNP (https://www.opulo.io/products/lumenpnp) and little reflow station. But let's see what other advice the community has here for us.
LumenPnP

@maehw It's been an interesting journey so far - learning PCB design, sending them to be fabricated and hand placing+soldering tiny parts. My next step is to risk paying for JLCPCB to assemble them for me. I've hesitated because my mistakes will cost much more than making them at home. My latest PCB project is a good test since I've confirmed that it works correctly.