# QWIIC RFID module stopped working, now returning lots of -1's

**URL:** <https://community.sparkfun.com/t/qwiic-rfid-module-stopped-working-now-returning-lots-of-1s/37712>\
**Category:** Qwiic System\
**Tags:** qwiic\
**Created:** [September 12, 2019, 1:13am UTC](https://community.sparkfun.com/t/qwiic-rfid-module-stopped-working-now-returning-lots-of-1s/37712 "2019-09-12T01:13:45Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![finnbear](https://avatars.discourse-cdn.com/v4/letter/f/edb3f5/32.png) [@finnbear](https://community.sparkfun.com/u/finnbear)\
**Post date:** [September 12, 2019, 1:13am UTC](https://community.sparkfun.com/t/qwiic-rfid-module-stopped-working-now-returning-lots-of-1s/37712/1 "2019-09-12T01:13:45Z")

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When I bring a valid RFID tag close to the sensor, I hear the normal beep. However, there is no sign of the tag id when getting a list of tags via example 5 from the library. What’s weird is last time I used it, a few months ago, everything worked.

```auto
RFID Tag: -1-1-1-1-1-1 Scan Time: 4294967.50
RFID Tag: -1-1-1-1-1-1 Scan Time: 4294967.50
...16 more times...
RFID Tag: -1-1-1-1-1-1 Scan Time: 4294967.50
RFID Tag: -1-1-1-1-1-1 Scan Time: 4294967.50

```

Micro-controller: Sparkfun Blynk board

Help would be appreciated 🙂

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**Author:** ![wonder\_boom](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/wonder_boom/32/6096_2.png) [@wonder\_boom](https://community.sparkfun.com/u/wonder_boom)\
**Post date:** [September 12, 2019, 3:23pm UTC](https://community.sparkfun.com/t/qwiic-rfid-module-stopped-working-now-returning-lots-of-1s/37712/2 "2019-09-12T15:23:23Z")

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I know that you’ve already posted an issue in the Repo, so many thanks! If anyone else is interested in following along, you can do so here:

[https://github.com/sparkfun/SparkFun\_Qw … y/issues/2](https://github.com/sparkfun/SparkFun_Qwiic_RFID_Arduino_Library/issues/2)

Otherwise I’ll post back here when a solution is discovered.

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**Author:** ![wonder\_boom](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/wonder_boom/32/6096_2.png) [@wonder\_boom](https://community.sparkfun.com/u/wonder_boom)\
**Post date:** [September 13, 2019, 7:11pm UTC](https://community.sparkfun.com/t/qwiic-rfid-module-stopped-working-now-returning-lots-of-1s/37712/3 "2019-09-13T19:11:03Z")

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It looks like a fix is in place: [https://github.com/sparkfun/SparkFun\_Qw … y/issues/2](https://github.com/sparkfun/SparkFun_Qwiic_RFID_Arduino_Library/issues/2). The library for the Qwiic RFID was asking for more bytes than was necessary which was causing the Blynk board to act erratically.