Tutorial 30 Temperature Control
In this tutorial we apply Adruino to perform temperature control. We use DH11 temperature sensor to sense the temperature and use relay board to control the power. The setting temperature is on Line 34. Whenever the temperature is below 29 C, the relay will on and vice versa. The relay may be used to power the heat source such as soldering gun. When the temperature rises exceeding 29 C as the result of soldering gun, relay will be off. Note that the D13 is used to control the relay.