[Davide Gironi] brought his digital information into the real world and built his own note transcriber through the point-of-sale receipt printer and ESP8266.
You have already seen these receipt printers in the hotel’s order window. The server places an order from any machine in the entire restaurant, and then pops up a paper summary for the chef to start using (or even cut off his position). Why shouldn’t we have this convenience in our lives?
Printers communicate using a variant of the “Epson Printer Standard Code”, for which [Davide] wrote a library and was fortunate to share the code. Use a pair of regulators and some passive components to add an ESP8266 to make the wireless (except the power supply) wireless. It has all the fun of setting up WiFi credentials, once running, just press the button on the dock and it will spit out your data.
But wait, where does this data come from? The web-based settings page allows you to configure the URI to the RESTful source of your choice. (XKCD has one, doesn’t it?) It also allows you to configure headers, footers, error messages, and of course the company’s hacker logo.
One of our favorite receipt printer moments is when the former Hackaday editor [Eliot Phillips (Eliot Phillips)] brought the selfie receipt printer to Supercon. We couldn’t find any photos of this picture, so we filled one of them with a Polaroid camera to bring you an excellent technique [Sam Zeloof].
Mike just humbly posted a sweet photo of himself on the main blog. https://twitter.com/szczys/status/1058533860261036033
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Post time: Mar-29-2021