This project consists of a scale for a portafilter machine. The timer is triggered when the espresso shot is poured. The code uses an SSD1306 display, an ESP8266, a HX711, a load cell and a touch button.
To use this code, you will need to install the following libraries:
- Adafruit_SSD1306
- Adafruit_GFX
- ESP8266WiFi
- Wire
- Timer
- Arduino
- Pushbutton (by Pololu)
- HX711_ADC (by Olav Kallhovd)
After uploading the code to the ESP8266 module, connect the components. Place the scale on your drip tray and connect the Reed Sensor to your coffee machine. When pouring a shot, the timer will start and the scale will tare automatically. The timing and weight of the shot will be displayed on the OLED display.