999 B
NickelBridge
NickelBridge is a simple utility that allows NickelBox to interface with receipt printers. It runs a simple web server listening on localhost:64269 (nibox) that accepts JSON-format receipts and attempts to print them to whatever device is configured in the UI.
NickelBridge uses node-thermal-printer
to print receipts. It therefore supports the Epson ESC/POS and STAR protocols.
NickelBridge itself has only been tested with ESC/POS.
Endpoints
-
GET
/status
: Returns JSON{"status": "OK", "width" 48}
where the width is the user-configured maximum width in characters of a single printed line of text. -
POST
/print
: Accepts a JSON body comprised of the output of ajson
format NickelBox receipt. Prints it, cuts the paper (if hardware allows), and responds with{"status": "OK"}
. -
POST
/opendrawer
: Instructs the receipt printer to pop open the cash drawer, if there is one attached.