On-device meter-digit OCR on a Seeed XIAO ESP32-S3 Sense + OV5640: TFLite Micro model embedded in the firmware, tensor arena in PSRAM, readings to Home Assistant via MQTT discovery. ESPHome.
ocr home-assistant ov5640 psram tensorflow-lite meter-reader esphome esp32s3 tflite-micro xiao-esp32s3
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Updated
Jul 15, 2026