How can I do this project?
I need to use this fan: P12 PWM PST | Pressure-optimised 120 mm Fan with PWM PST | ARCTIC
With an infrared sensor that can read temperature from about 15 cm. I found this:
Everything needs to be battery powered.
Then I power on with a switch, an LCD should show the temperature and the fan starts, and a red led is lit.
When temperature is below certain degrees the fan should stop, the led should be green and a buzzer should sound.
What components do I need for this and what battery? I would prefer a rechargable powerbank if possible but I don’t know what specifications I need.