I used two Atmega32 AVR microcontrollers with SPI protocol and Master/Slave connection. Other elements: LM35 temperature sensor and a LCD and cooler Motors and heater and blinking warning LED. Using analog to digital converter and analog comparator. Using C programming to program the microcontrollers and Proteus. Compares the temperatures and shows it on a 16*2 alphanumeric LCD and depending on the temperatures either the cooler or the heater or the Red warning light.
I used two Atmega32 AVR microcontrollers with SPI protocol and Master/Slave connection. Other elements: LM35 temperature sensor and a LCD and cooler Motors and heater and blinking warning LED. Using analog to digital converter and analog comparator. Using C programming to program the microcontrollers and Proteus. Compares the temperatures and shows it on a 16*2 alphanumeric LCD and depending on the temperatures either the cooler or the heater or the Red warning light.