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Diy temperature controlled fan using arduino
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- Опубликовано: 19 май 2020
- componets:-
1)arduino board
2)12v dc fan
3)ntc thermistor
4)bc547 transistor
5)1k resistor
6)10k resistor
7)breadboard
8)jumper cables
circuit diagram - bit.ly/2z5q2xB
code - www.mediafire....
thanks for watching
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Code :- drive.google.com/file/d/1L_1ppzY5ntrKaL_lm-xtDeN60wLGyvCq/view?usp=drivesdk
Noice
👍👌😁
Using a cap to remove that hissing noise from the fan when its not at 100% PWM = very good idea, THANK YOU !
However, the cap is very much related to each application - You have to experiment with the cap until you find one that takes the noise away but still lets it work on various PWM. If i put a 470uf as suggested, my fan just blows full-speed when its supposed to go half-speed. So now I´m using only 47uf and its perfect for 3 different speeds, no noise.
Probably one could determine mathematically which cap is the right one ... but I don´t know how to calculate that
👍🏻
Can i control the pwm with this circuit? Because mine is only turning on and off. I want the fan slowly build up from 25%,50%,75% and 100% duty cycle. When i measure the output with a oscilloscope i get a 25%,50%,75% and 100% duty cyle but the fans are not moving untill they reach 96% dutycyle. I use a 2 wired 24 fan
U can adjust that in code
@@ElectroRetro I adjusted the code but still not working. For example room temp i want it to spin with 50% but the fans is not spinning. Only when i adjust the fan speed to 96% pwm then the fan starts spinning
@@MRTZ75 should be in PWM pin. On Arduino Uno, the PWM pins are 3, 5, 6, 9, 10, and 11. The PWM pins are labeled with ~ sign.
@@nicholasn.sulaksana8662 it was the fan. My fan wasn't pwm compatible. Every fan manufacturer is different. By changing my fan the circuit worked :)
@@MRTZ75 are you using 24v fan? and all other components are the same as Electro Retro listed? thank you
So I have put a capacitor between the fan + and -. Can something happen to the capacitor if I leave the fan at the full speed for long?I want to make a controller for my PC case fans.
No problem
@@ElectroRetro Oh okay, thank you!
is the 470uf cap relative to the current draw of the fan. If so what cap would be needed for 4 fans in parallel at 80mA each (320ma)
You can use 470uf capacitor
at what temp wont the fan work ?
hey, im trying this but instead using bc547, im using C1815. is it okay or nay?
Yes, You can use C1815 or any npn transistor
@@ElectroRetro the fan didnt spin at all, the sensors working just fine but the fan doesnt spin. I tried print analogread fan and it showed like what the if condition writes. But it didnt spins. Something wrong or else sir?
@@ElectroRetro my ntc show value between 100-200 so i modify the code so the fan always full speed if the value of ntc is above 100 but nothing happened
Try with a pwm compatible fan
@@ElectroRetro if i use pwm fan, then which pin i should connect to which wire? like 12v, ground, tach and pwm pin
what if I use a 24v fan and power supply? Still same components work.
Yes
Thank you for your immediate response. Is it possible to use this setup for ESP32 dev kit?
I didn't try with esp32. I think its possible, you may need to change adc value to 4095 and need calibration.
Can u modifi this circuit with button and oled display to set different temp and show temperature
ruclips.net/video/YIGEKlqgNis/видео.html. Is it possible to change the dht11 to your thermostat
How sensitive and accurate is the thermistor
+/- 1%
The thermosistor I have has 3 wires, how to I wire them?
Do you have part number of your thermistor
@@ElectroRetro DS18B20
Follow this tutorial for DS18B20. randomnerdtutorials.com/guide-for-ds18b20-temperature-sensor-with-arduino/
How to give the 12V supply and from where , can you please explain.
You can use any 12v dc power Source. example:12v battery,12v adaptor.
@@ElectroRetro Thank you
2 songs at the same time......
😅
Im alrdy follow exactly what you did in this video but also cant coding the arduino.
What the problem? pls explain.
@@ElectroRetro just unable to coding. idk why. i alrdy do the same thing that u do in your video but unable to coding.
What's the error showing in arduino ide?
@@ElectroRetro
"Avrdude: stk500_recv():programmer is not responding
Avrdude:stk_500_getsync() attempt 10 of 10: not in sync: resp=0xf1"
If you are using arduino nano then change processor to atmega328p(old bootloader) maybe it will work.
Tools>processor>atmega328p(old bootloader
Mine is not working can you help me? I checked every connection and coding but still not working?
Sure, can you please explain your problem?
@@ElectroRetro my connection are correct and I even done with my code uploading but the fan is not working i don't know what's wrong
Check serial monitor
@@ElectroRetro Yeah numbers are displaying continuously, what to do next, can you please tell me?
Is it displaying 640 to 750 values?
i didn't finde code please help me
Code :- www.mediafire.com/file/xrf43cojzjz554k/tem_controlled_fan.ino/file
It not work help me
What's the problem?
This work without arduino
No