Arduino-PID-Controller

This project is based on the Adafruit Sous-Vide controller by Bill Earl with the following changes:

• cheap 1602 LCD Panel instead of the Adafruit RGB LCD Shield
• encoder with push button instead of a keypad
• robust Hardware Design (not described in this Repo) with Schuko socket
• navigation Menu
• and other minor changes

Pictures

Todo

• get higher resolution temperature readings
• add socket for different sensor probes (e.g. PT1000) and sensor selection menu or auto deterction
• add sensor calibration mode
• add memory function to store and load the settings for different environment this controller is used in (P,I,D, direction, sensor, sensor calibration)
• add Calibration Mode for temperature sensor
• add Error message if autotune fails
• normalize noisy temperature readings
• make digits of setpoint and sensor reading beneath one another with trailing zeros
• define special characters for the lcd as array
• match speed of controll loop to frequency of main power, use optocoupler to detect zero crossing

Libraries

This code uses third party libraries

Libraries for PID Controll

• Arduino-PID-Library
• Arduino-PID-AutoTune-Library Libraries for the LCD
• Arduino-LiquidCrystal-I2C-library

Libraries for the DS18B20 Temperature Sensor

• OneWire
• Arduino-Temperature-Control-Library

Library for the Encoder

• RotaryEncoder