# My RFID is using too much parasitic power and doesn't scan my fob or card

**URL:** <https://forum.sunfounder.com/t/my-rfid-is-using-too-much-parasitic-power-and-doesnt-scan-my-fob-or-card/4920>\
**Category:** General\
**Created:** [August 13, 2026, 8:30pm UTC](https://forum.sunfounder.com/t/my-rfid-is-using-too-much-parasitic-power-and-doesnt-scan-my-fob-or-card/4920 "2026-08-13T20:30:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Aryav1234](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/aryav1234/32/2578_2.png) [@Aryav1234](https://forum.sunfounder.com/u/Aryav1234)\
**Post date:** [August 13, 2026, 8:30pm UTC](https://forum.sunfounder.com/t/my-rfid-is-using-too-much-parasitic-power-and-doesnt-scan-my-fob-or-card/4920/1 "2026-08-13T20:30:52Z")

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My RFID always uses power but never scans my fob of keycard

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**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\
**Post date:** [August 14, 2026, 12:01pm UTC](https://forum.sunfounder.com/t/my-rfid-is-using-too-much-parasitic-power-and-doesnt-scan-my-fob-or-card/4920/2 "2026-08-14T12:01:58Z")

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To help you better, could you please let us know:

Which main board are you using? (e.g., Arduino Uno, Raspberry Pi, ESP32, etc.)

Which code are you running for the RFID module?

This information will help us understand your setup and identify the issue more accurately.