I’ve seen enough of the internets to know this is a must have. Damn, if I was in America this would be a business idea in itself.
Edit: If you nick this idea and make it your business - YOU’RE WELCOME! I only ask kindly of you send a yearly donation to Doctors Without Borders or some similar organisation.
Shit, you could probably make a killing selling this sign. Easy enough to build with a couple esp01’s and some led