hi all I have small question, how can I get arduino to save my last temp setting if, ex power shut down then restart. I have this setup. When I start up the set point is 25 C but I would like to have it to remember the last setting I had set it. Is it possible in coding not using battery back up.
const int Led_Green = 10; // Red LED (270E-GND) - pin 10 const int Led_Red = 11; // Green LED (270E- GND) - pin11 const int Relay = 12; // BC 548_ C-(yellow led via 270E-GND),B-1K-pin12, const int Temp_Sensor = A0; // Lm 35DT Temperature sensor cont// E-GND. const int Up_Key = 2; // adjust up key const int Down_Key = 3; // adjust down key int Vin = A0; // Variable to read the value from Pin A0 float Temperature; // variable that receives the converted voltage int SetPoint = 25;