Fingerprint Reader for Home Assistant

WARNING: Direct sunlight WILL damage the sensor. If it will be exposed to direct sunlight at any point of the day, cover the sensor. I'm using the following:
GROW R503 Fingerprint Sensor Cover - Free 3D Print Model - MakerWorld

ESP32-C6 + R503 Sensor | Solar Ready | Long Battery Life

A compact, reliable fingerprint reader designed for Home Assistant with excellent WiFi range and very low power consumption. Perfect for door access, automation triggers, or secure device control.

GitHub repo:
 

https://github.com/0ldHand/fingerprint-reader-esphome

Key Features

• Full integration with Home Assistant (events + services)
• LED feedback (Green = match, Red = no match, Purple = enrolling, etc.)
• Power-saving mode: Sensor sleeps after 15 seconds of inactivity
• External 2.4GHz antenna for strong WiFi signal
• Battery powered with 2× 18650 cells (~6400mAh total)
• Solar panel ready
• Clean, modern Home Assistant dashboard included

Parts List

Software & Configuration

• Full ESPHome Configuration: View on Pastebin
• HA Dashboard https://pastebin.com/fwtfCT77
• HA Enroll script https://pastebin.com/JutaBmcx
• HA Delete script https://pastebin.com/T4wLkLvS
• HA Helper config in pictures above
• Includes external antenna switching, power-saving mode, rich LED feedback, and complete Home Assistant integration
• OTA updates supported

Home Assistant Dashboard

A clean, modern dashboard is included with:

• Real-time fingerprint status
• Easy enrollment (with ID selector)
• Delete single fingerprint or all fingerprints
• WiFi signal strength monitoring

Power & Battery Life

• Very low idle consumption thanks to sensor sleep mode
• Designed to run for weeks on a single charge
• Ready for solar panel input (3W+ recommended)