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Touch HMI
Smart Scale with Touch
7-inch touch display with NFC
ESP32-S3LVGL7" Touch LCDNFC/RFIDNAU7802OTA
Description
Smart household scale with ESP32-S3, 7-inch capacitive touch display (LVGL UI), NFC/RFID reader (PN532) for automatic container recognition and high-precision weighing module (NAU7802). Each container (e.g. sugar, flour, rice) has an NFC tag. When placed on the scale, the contents are automatically identified and the weight is compared against the target stock in the database — so you instantly know when something needs to be restocked. WiFi manager for easy network setup, OTA updates for maintenance-free operation and REST API connection to a backend system.
Want something like this built?
This is exactly what my "Custom ESP32 Firmware" package covers — from 239€.
I deliver software only (firmware, configuration, code) — no assembled hardware. The components used are only linked for reference, you buy them yourself. Enclosures on request.
Features
- 7-inch capacitive touch display
- LVGL graphical user interface
- NFC/RFID container recognition
- Automatic inventory check against database
- High-precision load cell (NAU7802)
- OTA firmware updates
- Backend REST API integration
Techstack
Hardware
- ESP32-S3
- 7" IPS LCD
- PN532 NFC
- NAU7802 ADC
- Wägezelle
Software
- PlatformIO
- LVGL
- Adafruit PN532
- ElegantOTA
- WiFiManager
Integration
- REST API Backend
- OTA Update Server
