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Forum ‹ Members section ‹ DIY Ferduino controller ‹ Connect fans
Connect fans [SOLVED]
7 posts
• Page 1 of 1
Post Number:#1
Sun Oct 04, 2015 6:19 am
Sun Oct 04, 2015 6:19 am
Posts: 43
Topics: 11 Images: 4 Solve rating: 0 Joined: Wed Jul 08, 2015 5:32 pm Topics: 11
Age: 47 Gender: 
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Hello Fernando. I have to connect two fans arctic f12 4 pin and i don't know if I have to put a ULN2003A to the fans, they are going to operate at the same time. How do I connect the 4 wires that lead the fans?
Post Number:#2
Sun Oct 04, 2015 10:50 am
Sun Oct 04, 2015 10:50 am
Posts: 1699
Topics: 38 Images: 301 Solve rating: 233 Joined: Mon Mar 03, 2014 5:59 pm Topics: 38
Age: 39 Location: São Paulo Gender: 
National Flag:
Hi!
Follow the schematic available here: viewtopic.php?f=24&t=40
Connect the GND from first fan to F1 and the second to F2 and so on.
Best regards.
Follow the schematic available here: viewtopic.php?f=24&t=40
Connect the GND from first fan to F1 and the second to F2 and so on.
Best regards.
Post your doubts on forum because it can help another user too. Just PM me for support if it's absolutely necessary.
Post Number:#3
Mon Oct 12, 2015 9:26 am
Mon Oct 12, 2015 9:26 am
Posts: 43
Topics: 11 Images: 4 Solve rating: 0 Joined: Wed Jul 08, 2015 5:32 pm Topics: 11
Age: 47 Gender: National Flag:
Hello Fernando. At the moment it is all resolved, in the absence of the fans. I have fans arctic f12 4 pin pwm and i have put the ULN2003A and the fans connected as you have the schema in the harness: black, yellow, green, and blue. The only problem now is that the fan is always switched on at the same speed and will not turn off what is the solution?
Post Number:#4
Mon Oct 12, 2015 10:25 am
Mon Oct 12, 2015 10:25 am
Posts: 1699
Topics: 38 Images: 301 Solve rating: 233 Joined: Mon Mar 03, 2014 5:59 pm Topics: 38
Age: 39 Location: São Paulo Gender: National Flag:
Hi!
The pin 1 (disable) is connected on ULN?
On setup comment this line:
Best regards.
The pin 1 (disable) is connected on ULN?
On setup comment this line:
Code: Select all
Serial.begin(38400);Best regards.
Post your doubts on forum because it can help another user too. Just PM me for support if it's absolutely necessary.
Post Number:#5
Wed Oct 14, 2015 6:19 pm
Wed Oct 14, 2015 6:19 pm
Posts: 43
Topics: 11 Images: 4 Solve rating: 0 Joined: Wed Jul 08, 2015 5:32 pm Topics: 11
Age: 47 Gender: National Flag:
HAHAHAHA ... I have been testing all over again, before you install it in the aquarium and i see more problems. When the fans are put in place only one works, the other will not move. And the installation as i did this in the diagram.
The ulm is connected to the VIN of the plate because I have it powered with 12V and the GND of the fans are connected to the first pin of the ulm to the first fan, the second pin to the second fan and the blue wire from the fan is connected to pin 13. But I realized that the speed is the same, even though you put more or less speed, stop if they stop but everything else i don't see it well.
The ulm is connected to the VIN of the plate because I have it powered with 12V and the GND of the fans are connected to the first pin of the ulm to the first fan, the second pin to the second fan and the blue wire from the fan is connected to pin 13. But I realized that the speed is the same, even though you put more or less speed, stop if they stop but everything else i don't see it well.
Post Number:#6
Wed Oct 14, 2015 7:49 pm
Wed Oct 14, 2015 7:49 pm
Posts: 1699
Topics: 38 Images: 301 Solve rating: 233 Joined: Mon Mar 03, 2014 5:59 pm Topics: 38
Age: 39 Location: São Paulo Gender: National Flag:
Hi!
If the circuit works with 1 fan should work with 2. Unles pin 1 (disable) from Arduino isn't connected on pin 1 - 7 on ULN2003 as you can see on schematic.
Or your 12V power supply can't give enough current to all devices.
Regarding speed, which temperature you have configured to fans?
Images of your circuit can help but, please post images correctly.
Best regards.
If the circuit works with 1 fan should work with 2. Unles pin 1 (disable) from Arduino isn't connected on pin 1 - 7 on ULN2003 as you can see on schematic.
Or your 12V power supply can't give enough current to all devices.
Regarding speed, which temperature you have configured to fans?
Images of your circuit can help but, please post images correctly.
Best regards.
Post your doubts on forum because it can help another user too. Just PM me for support if it's absolutely necessary.
Post Number:#7
Sun Oct 18, 2015 5:47 am
Sun Oct 18, 2015 5:47 am
Posts: 43
Topics: 11 Images: 4 Solve rating: 0 Joined: Wed Jul 08, 2015 5:32 pm Topics: 11
Age: 47 Gender: National Flag:
Hello Fernando. It is resolved at the end was a pin of the ULN that was poorly welded. Thank you very much.
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