14SG, R7008sb & Naza M V2

[cjm180]

Hey

This might be a silly question, but i need to know when the receiver is in mode D, will the sbus be transmitting all channels 1 thru 15, and then the ports on the receiver itself are assigned to channels 9 to 15?

The reason for the Q is what i am trying to do:

i have the SBUS connected to a naza M V2, and all flies well. The naza's ports are full. i want to add some strobes / LED's to help with orientation, and i want these to be switched.

So what i was thinking is continue with the naza connected to SBUS, then connect the leds to the ports 1 to 4 on the receiver (assigned to channel 9 thru to 12) depending how many leds i have etc, then assign switches to channels 9 thru 12.

So i am guessing in modes B or D, the SBUS communication is for all channels, 1 thru 15. and that the only difference between modes B and D are the channel allocation to ports 1 thru 7 on the receiver itself. is this correct?

kr
Craig

[cjm180]

No one?

[Granpappy]

You can mix SBUS channels with physical channels on the receiver. You will need to set 14 channel FASSTEST on Tx and Mode D on Rx.

I do this on my F3A plane. 2 x Ailerons and throttle are connected to Rx, 2 x Elevator and Rudder are connected via SBUS. I use mode B on Rx.

[cjm180]

ok thanks, cool.

so in mode B or D, all channels are sent down the SBUS cable, but mode A replicates the signals for channels 1 thru 7 to pins 1 thru 7 on the front of the RX, a mode D replicates the signals for channels 9 thru 15 to pins 1 to 7? is this correct?

Thanks again for your reply

[Granpappy]

This is correct. SBUS actually controls 18 channels but obviously your radio can only utilise 14 of them. If you use mode B or D then you can replicate SBUS channels with PWM (plug in) channels so you can actually run two servo's per channel if you wanted to. Ie. in mode B, plug a servo into Channel 1 and have a servo on SBUS programmed for Channel 1 and you have duplicate servo's running on the same channel. I can't actually think of a reason why you would want to do that though.

As I said before, you need to set mode D on the receiver to use SBUS with your flight controller and channels 9 to 14 as PWM plug in channels. Remember that channels 13 and 14 are switch mode only ie. On/Off. Channels 9 to 12 are proportional so you need to set the transmitter to either -100 off and +100 on through a switch if you are using these channels purely for switching LED's. If you just need 2 channels for switching then use 13 and 14. It's easier.

[cjm180]

Thanks Granpappy

That clears it up for me perfectly!