Re: XYZprinting Open Source NFC key calculator online: www.nfckey.xyz
Bozotclown1970 wrote:johnboyjr wrote:Can any one give me step by step how to use a NTAG213 sticker with my android phone thanks
I cannot explain to you how to use the Anroid application because I do not have a NFC enabled phone, but the steps are:
1: Get password by entering the UID in the NFCkey wen site
2: Enter the desired length in pages 10(0A), 11(0B) and 20(14) of tag
3: Enter the password from NFCket web page in page 43(2B) of tag
4: Enter Pack Code from NFCkey web page in page 44(2C) of tag
5: Write tag with Ardoid.@Bozotclown1970
Thanks for that answer, I had the same question. Still I cant figure it out on a Davinci Mini:
1. The pack code is only 2 bytes, instead of four on all the other pages. Is that correct ?
2. On an empty Tag, do I really only need pages 10,11,20,43 and 44 ? Because looking at the big thread, there´s much more stuff on the tag:PAGE DESCRIPTION 00 First part of the UID of the NFC Chip 01 Second part of the UID of the NFC Chip 02 First two bytes are a checksum generated from the serial number. The second two bytes are the lock bytes. 03 The capability container of the chip. Same for all. 04 Always 01 03 A0 0C. 05 Always 34 03 00 FE. 06 Always empty. 07 Always empty. 08 First byte is alway 5A. Second byte is the Material, which is also stated in the spools serial number. Third byte is the color of the filament. Last byte is always 00. 09 First two bytes are always 00. Last three bytes are part of the spools serial number when converted to ASCII. 10 Total capacity on the Spool. This has to be the same as Page 11. 11 Total capacity on the Spool. This has to be the same as Page 10. 12 Almost always D2 00 2D 00. 13 First two bytes are almost always 54 48. Last two bytes belong to the spools serial number when converted to ASCII. 14 All bytes belong to the spool serial number when converted to ASCII. 15 Always empty. 16 Always empty. 17 Always 34 00 00 00. 18 Always empty. 19 Always empty. 20 Remaining capacity on the Spool 21 First two bytes hash the count on Page 20. Last byte is always 54. 22 First two bytes hash the count on Page 20. Last byte is always CE. 23 First two bytes hash the count on Page 20. Last byte is always 76. 24 Always empty. 25 Always empty. 26 Always empty. 27 Always empty. 28 Always empty. 29 Always empty. 30 Always empty. 31 Always empty. 32 Always empty. 34 Always empty. 35 Always empty. 36 Always empty. 37 Always empty. 38 Always empty. 39 Always empty. 40 Always 00 00 00 BD. 41 These are configuration bytes, please see the official datasheet of the NTAG213 for informations. 42 These are configuration bytes, please see the official datasheet of the NTAG213 for informations. 43 Contains the password of the tag. 44 First two bytes are the PACK number. The last two bytes are the RFUI.
You probably also need to do pages 8, 9, 12, 13, 14 & 17 (I always do)
You might have to do 21-23 but it depends on your printer firmware whether these pages are actually checked. They aren't always (I always do too)
41 & 42 are also important and may need changing too - you may be able to just copy the values from your old original card.
