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20x4 LCD user interface projects

Final-year project topics built with 20x4 LCD user interface — working builds, abstracts and honest quotation pricing.

Smart Water Vending Machine with RFID Payments and Usage Dashboard — project thumbnail preview
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Smart Water Vending Machine with RFID Payments and Usage Dashboard

This project builds a smart water vending machine: RFID prepaid cards authorize dispensing, a flow sensor meters every litre...

ESP32 development board MQTT telemetry over Wi-Fi MFRC522 RFID payments
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