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Help! Motor Shield + SimHub wind sim - fans not spinning properly

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(@timpo)
New Member
Joined: 4 years ago
Posts: 2
Topic starter  

I’m having trouble getting my wind sim to work. The set up uses an Arduino UNO and an Adafruit Motor Shield v2 as described in Boosted Media’s videos. I have copied his settings into Sim Hub:

  • enable one MotorShield and PWM at 1600 in the sketch uploaded to the Arduino,
  • enable "Speed" in the ShakeitMotor tab and turn on channel 1 (where my fan is connected on the board) in the output section

My problem is that the fan won’t spin properly. From the video you can see that it is receiving a signal at the correct time (I.e. when the car speeds up) but only spins very slightly and then makes a clicky/whiney noise.  I get similar behaviour when I test in SimHub.

The fan is a DC brushless design, but I have seen these used successfully in wind sim applications. If I connect the fan directly to the 12v power supply, it spins perfectly. 

  • The power supply is a 12v, 3A, DC
  • Fan is Delta AFB1212SHE 12V, 1.6A, DC

I’m hoping someone here has some suggestions about what could be the problem? Has anyone had similar issues? I'm not an electronics expert so may well have made a silly mistake somewhere.

Many thanks


   
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(@admin5435)
Prominent Member Admin
Joined: 7 years ago
Posts: 732
 

Hello !

Can you ensure the gain in simhub is high enough (on top right of the effect list) maybe it's too low,
I see the the specs of this particular fan states that it will work from 6 to 12V, since default gain is 50% it won't will give 0 to 6v and the fan won't spin following the specs :   

Make sure to set both effects and global gain to 100% as explained here : https://github.com/SHWotever/SimHub/wiki/ShakeIt-V3-Motors---Output-Configuration#configure-volume

 


   
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(@timpo)
New Member
Joined: 4 years ago
Posts: 2
Topic starter  

It looks like you were spot on with this. With global gain now at 100%, the fan is spinning as it should. Thank you so much.


   
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