RFID Tags
At the heart of OpenSpool are the NFC/RFID
tags that you will place on every spool you want to automate. The OpenSpool hardware works with a wide variety of High-Frequency tags (13.56Mhz)
NFC vs RFID
NFC
is toRFID
likeBluetooth
is toRadio
.
All NFC Tags are RFID tags, but not all RFID tags are NFC tags.
Tag Selection
Purchase NTAG 215 or 216
NTAG 215 - Amazon
NTAG 215 - Aliexpress
Tag | Bytes | Supported |
---|---|---|
NTAG 213 | 144 bytes | ❌ |
NTAG 215 | 504 bytes | ✅ |
NTAG 216 | 888 bytes | ✅ |
Protocol
OpenSpool NFC tags create an NDEF message on the tag. NDEF messages are human readable and can be viewed from your phone.
iPhone - NFC Tools app
Android - NFC Tools app
The NDEF message is a single record of type application/json
{
"protocol": "openspool",
"version": "1.0",
"type": "PLA",
"color_hex": "FFAABB",
"brand": "Generic",
"min_temp": "220",
"max_temp": "240"
}
color_hex
= 6 digit hex color. For best results it needs to be one of the predefined values in bambu slicer.
type
= One of the predfined values in bambu slicer.
brand
= One of Generic
, Overture
PolyLite
, eSun
, PolyTerra
. The full list can be found in bambuslicer. If a filament is defined that is not in this list, it will be assumed to be Generic
.