Lm35 Temperature Sensor Circuit Diagram. We are using arduino uno as our board and lm35 can be connected to arduino as shown in circuit diagram. The following image shows the circuit diagram of a simple temperature controlled switch using lm35 temperature sensor lm358 op amp and a 5v relay module.
If temperature goes beyond a particular level 50 degree in this circuit then red led will glow automatically otherwise yellow led remains on below that particular temperature. Note lm35 is an analog temperature sensor. Today we are building a simple yet very useful circuit using temperature sensor lm35 in this circuit we are going to control the leds according to temperature around.
The lm35 series are precision integrated circuit temperature devices with an output voltage linearly proportional to the centigrade temperature.
Lm35 temperature sensor equivalent. It is a small and cheap ic which can be used to measure temperature anywhere between 55 c to 150 c. Note lm35 is an analog temperature sensor. The 5v for lm35 can be taken from the 55v out pin of arduino uno.
