Need help: Relay control with delay 3 mins + Temperature sensor reading

Other Hardware LEDs and Multiplexing
1

Hi Friends,

I know some very basic information about this subject, I am very excited about the application of this Arduino's.

I have a small task in my hand and I need your help in coding.

Initially relay should be OFF state.
When push button 1 is pressed (and released), Relay should turn ON for 3 mins
When push button 2 is pressed (and released), relay should trun ON for 1.5 mins
Parallelley temperature sensor feedback is read and if the temperature is read below (say 30 Deg C) then relay should be turn OFF and buzzer should be ON.
if again push button 1 or 2, is pressed then cycle should be repeated.
If no push button is pressed then, relay should be OFF.

2

Share with us your attempt to code this so far. Also give a schematic showing how it is wired, and links to the technical details of important components. Describe what it does when it is running, anything that is wrong or that it does not do, especially in regards to leds and multiplexing. Read the forum rules post to find out how to post code, pictures and links correctly.