Writing RFID Tags

Writing RFID Tags

SpoolScribe generates an OpenSpool JSON payload describing a spool. Writing that payload onto a physical NFC/RFID tag is done with an NFC writer.

SpoolScribe produces the data. The actual tag-writing depends on your hardware and the tag format your reader expects.

The payload

A generated file looks like:

{
  "protocol": "openspool",
  "version": "1.0",
  "type": "PLA",
  "color_hex": "91C500",
  "brand": "Polymaker",
  "min_temp": 190,
  "max_temp": 230,
  "bed_min_temp": 60,
  "bed_max_temp": 60,
  "diameter": 1.75,
  "density": 1.34,
  "sku": "PA03006",
  "product": "Panchroma PLA Silk",
  "color_name": "Silk Lime"
}

This follows the OpenSpool convention.

Writing to a tag

Typical options:

• A phone NFC app that writes NDEF/JSON records.
• A USB NFC reader/writer (e.g. PN532-based) with your own script.
• Any tooling your Snapmaker U1 firmware fork documents.

Match the tag type and record format expected by your reader.

See Snapmaker U1 & paxx12 for the firmware side.