lm35 sensor projects | lm35 temperature sensor arduino

Arduino lm35 sensor control 12v fan and LEDs. This is a very simple Arduino project base on an lm35 temperature sensor that's controls LEDs and a 12v fan one by one when the temperature increases. When the temperature is 30-degree celsius first led will turn on and When the temperature is 100-degree celsius the transistor switches the load and the 12v fan turn on.

Simple arduino projects.
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Topic :)
arduino temperature sensor projects
arduino lm35 temperature sensor control fan and leds.
lm35 temperature sensor.
arduino temp sensor

Component requirement for temperature sensor projects.
1. Arduino uno.
2. LM35 temperature sensor
3. 12v fan.
4. 12v Power supply.
5. TIP41c NPN transistor.
6. LEDs x 5.
7. 220 ohm resistor x 5.
8. 1k ohm resistor.
9. breadboard.
10. Jumper wire.

Circuit & Code for aduino lm35 temperature sensor control fan and leds.

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[adarshmadhusudhan]

Hi, I did this project exactly as how you showed us in the video, but while uploading the code all led's are glowing even though temperature is below 30 and after heating it till 100 degrees the fan is not working, can you give me the solution for this issue?

[ankushghosh]

hey, can I use 2n2222 transistor instead of TIP41c transistor??

[achuashkar]

Can we use ds18b20 temperature sensor.?