All LEDs are glowing Love-o-Meter

Official Hardware Kits Starter Kit
1

nothing more to say about it please help.

2

Try this:

If you're using the Arduino IDE, click the Tools > Serial Monitor menu option. If you're using Arduino Web Editor click "Monitor" on the menu on the left side of the window.

You should now see the voltage and temperature reading from the temperature sensor. What does it say?

3

it says
Sensor value: 158, Volts: 0.77, degrees C: 27.15

4

The code is written so that all the LEDs will light up when the temperature reading is 26 C or higher:

const float baselineTemp = 20.0;

...

else if (temperature >= baselineTemp + 6) {

Is your room temperature around 27 C?

You are supposed to set the value of the baselineTemp variable to the room temperature. If your room temperature is different from 20 C, then you need to change that line and then upload the modified sketch to your Arduino board.

5

thank you ( :

6

You're welcome. I'm glad if I was able to be of assistance. Enjoy!
Per