Objective of this project is to design a temperature controller similar to those used in industrial settings. These controllers usually include a display for displaying the set-point, buttons for adjusting it, a temperature sensor input, and a control algorithm. The controller will function as both a heating and cooling controller.
Steps that are followed this project are as follows:
- The temperature controller has a default setpoint of 22oC and the measured temperature is converted to oC with a precision of 0.125oC.
- Different colored LEDs are used to indicate the intensity of the heater or cooler. The heater is represented by a red LED, and the cooler by a blue LED.
- PWM frequency is 1kHz and a resolution is 100 steps (ARR value).
- Baud rate is115200 and 8N1 configuration is used to send messages such as "Heating", "Cooling", PWM duty ratio, and current temperature.
- The buttons increase/decrease the setpoint temperature by 0.5 oC respectively.
- Sampling time is set to 0.5 seconds, buttons are responding only when they are released.
- The gain of the controller is 5 PWM counts for every 0.125oC temperature error.
Red LED->A0
Blue LED->A1
Saturation LED->A2
Button DOWN->B12
Button UP->B13
UART Connections->A9-A10
I2C Connections-> B6-B7
