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MSH Brain 2 HD Bluetooth


Steven1983
(@steven1983)
Active Member Customer
Joined: 8 months ago
Posts: 11
Topic starter  

Hello,
I will soon buy a Brain 2 HD bluetooth ...
I would like to know if addition to the special power supply of the HD version it is possible to power a free port on the upper part? because I have a reception battery with two parallel outputs of 7.4v each
thank you in advance
Steeve

229374BB A694 4DC2 A215 5977F8894322

 


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BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 529
 

Yes it would be possible.
However, you would lose the functionality of the safety switch that only controls the main power MPX connector.
In order not to completely discharge the 2S lipo pack below 3V per cell and damage it irreparably, you should always remember to disconnect the second Lipo connector from the flight control unit.

Usually you connect the two negative output cables together and the two positive output cables together of the 2S lipo pack on a female connector (e.g. a DEANS female connector) and then connect it to a male connector soldered on the HD cable provided with the HD control units.
This will also allow you to charge your 2S lipo pack faster because you can use a higher C charge rate by having the wires of the two connectors of your 2S lipo pack connected together in parallel.


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Steven1983
(@steven1983)
Active Member Customer
Joined: 8 months ago
Posts: 11
Topic starter  

ok thank you very much for your explanations!
Do you think I should take a Brain2 or a Brain2 HD? Because I will mount an Align Trex 600XN with a voltage regulator included in the kit (Align B6M).

 

88BAF753 DEE2 4416 9F98 A756622884C7

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BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 529
 

From personal experience we had tried (years ago) the Align 2-in-1 regulators on two different 700 class models because the functionality of a spark plug together with the BEC seemed very interesting and useful. However, both models were destroyed due to insufficient BEC current which caused the servos to be unpowered.

The 2-in-1 model in the picture you posted is different from the one we tested and we hope that Align has solved the problems by increasing the maximum current.

Certainly the fewer links in the reliability chain the better.

If all servos in your model are HV servos that can operate without damage up to 8.2V power supply, then it would be safer to use 2S lipo directly without a BEC that can be insufficient or damaged.
For spark plug ignition you can use one of the other systems available on the market (SwitchGlo Pro or Simprop Glow Star).

If all or even only one of your servos is not HV then you have to use a BEC.
But first check the maximum current of your Align BEC which should not be less than 10A continuous and 15A peak for short periods.

Also keep in mind that a BEC connected to a battery has its own power consumption even when the output of the BEC is disconnected from the control unit and the loads by the safety switch. Therefore, if you do not disconnect the battery from the BEC at all times, you risk finding your battery completely discharged and damaged because the cells have dropped below the maximum 3.3V limit.


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Steven1983
(@steven1983)
Active Member Customer
Joined: 8 months ago
Posts: 11
Topic starter  

Thank you for your reply.
The 2 in 1 Align regulator can provide 6A continuously ... So I will use a 2S lipo which will feed the power cable of the Brain2, and I will use the 2 in 1 regulator only for the ignition of the candle, for later if it does not suit me I would change the system.

Align regulator B6M specs:

Specification:
Input voltage: DC 7.4V 2CELL Lithium battery
Output voltage:6A 7.4V(For reciver/servo) 5A 1.5V(For Glow plug)
Max. continuous current: 6A


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Steven1983
(@steven1983)
Active Member Customer
Joined: 8 months ago
Posts: 11
Topic starter  
  • Hello, Another question when I finished programming the Brain2 ... Can I modify the double deflection and the expo in the remote control?
  •  

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BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 529
 

If by "Double deflection" you mean "Dual rate", the answer is:
Sure!

Remember, though, that with dual rate you lose resolution and control accuracy.

If you want to reduce the maximum range to reduce the rotational speed of the model, then it is much better to go to ADVANCED, tab "Setup" then "Cyclic" and reduce the maximum rotational speed of one of the setups you will be using in flight.


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