Is RC522 13.56MHz RFID NFC Reader Compatible with Home Assistant (ESPHome)?
Hardware Safety & Verification Specs
Electrical parameters & logic voltage safety limits before powering ICs
## Compatibility Overview
RFID and NFC card access control scanner for smart door locks workshop tool authorization or personal keycard arming/disarming.
Interactive Pinout & Wiring Diagram
Hover over any pin to view voltage limits and pull-up specifications
## Technical Specification Matrix
| Feature / Attribute | Specification / Status |
|---|---|
| Hardware Protocol | SPI Bus / 3.3V |
| Bridge Required | NO |
| Border Router Needed | None |
| Exposed Entities | Tag ID (HEX) NFC Card Scanner State Authorization Binary |
| Pairing Complexity | Intermediate |
| Factory Reset Instruction | Hold BOOT button for 3s. |
## Step-by-Step Pairing Guide
Factory Reset Device
Hold BOOT button for 3s.
Initialize Pairing Mode on Home Assistant (ESPHome)
Open Home Assistant (ESPHome) administration console, navigate to Integrations / Add Device, and start pairing scanner.
Confirm Entity Binding & State Verification
Verify that primary entities (Tag ID (HEX), NFC Card Scanner State, Authorization Binary) report live state changes inside Home Assistant (ESPHome).
Production Code Generator & Preset Toolkit
Pre-configured pinouts & drivers for RC522 13.56MHz RFID NFC Reader
Report a Pinout Error or Submit Tested Code Snippets
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