Intelligent Coffee Machine with Bluetooth and on-screen Graph. Developed on Arduino Nano (Atmel Atmega 328P), uses ST7920 display, HC-05 Bluetooth adapter, Dallas DS18B20 temperature sensor, relay to control the heater coil.
Full tutorial, code and schem of this Arduino Project for beginners:
https://www.hackster.io/gyula-osi/sma…
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2.00 GEEK