(09-Jun-2024, 06:14 PM)Radworm Wrote: I am giving this question a bump.  For anyone owning an ERLS TX, does BF throttle settings trump the throttle setting on the controller?  I had a custom curve set up on the controller but decided to switch it in BF so I can tailor for quads as I get more.  I believe the above throttle curve is set back to default on the Radio. It is a linear throttle curve.  I added expo in BF to decrease sensitivity at center stick for my noob muscle memory.  I also added a throttle limit.

Thanks in advance.

The reason I use my custom throttle curve is this.

1) I want the throttle control to have exactly the feel I want at a specific throttle position.
2) I want to have full low throttle at 0 and full high throttle at 100.
3) All my quads flies at a slightly different throttle position.

So I always set a custom throttle curve on the transmitter and I can tweak them at the flying site without a computer to connect to BF.

(09-Jun-2024, 08:11 PM)SeismicCWave Wrote: The reason I use my custom throttle curve is this.

1) I want the throttle control to have exactly the feel I want at a specific throttle position.
2) I want to have full low throttle at 0 and full high throttle at 100.
3) All my quads flies at a slightly different throttle position.

So I always set a custom throttle curve on the transmitter and I can tweak them at the flying site without a computer to connect to BF.

Sounds good. That didn’t answer my question. I am assuming BF has precedent over any throttle curve you set up on the Radio since it is running through the FC. I fly only at home so accessing the computer is no big deal to me, but I could see if you travel to some place where you don’t have access to a PC that would make complete sense.

(10-Jun-2024, 03:43 AM)Radworm Wrote: Sounds good.  That didn’t answer my question.  I am assuming BF has precedent over any throttle curve you set up on the Radio since it is running through the FC.  I fly only at home so accessing the computer is no big deal to me, but I could see if you travel to some place where you don’t have access to a PC that would make complete sense.

I have a feeling that the transmitter has precedent over BetaFlight. The reason is that BetaFlight on your flight controller will not see the throttle position until the receiver sends the data over. 

So let's say your physical position of your throttle stick on the gimbal is at perfectly centered mid stick. You are using a throttle curve on your transmitter saying that at mid stick your throttle should be at say 40% instead of 50%. Translating to µs. If your throttle stick at 50% is 1500 µs. Say 40% is 1400 µs. The receiver will send the 1400 µs data to the flight controller. Then the BetaFlight firmware on the flight controller will determine where it should put the 1400µs pulse on your throttle curve within BetaFlight.

So no BetaFlight does not have precedent.

On and one more item why I don't use throttle curve on BetaFlight. Say if my quad flies at throttle setting below 50%. I set a throttle curve like an exponential curve on BetaFlight. Then I set the offset to mid stick at below 50%. I believe what I saw was that the throttle curve never reached 100% if I off set the mid point.

Also Betaflight only set the throttle curve as an exponential curve. When I set throttle curve on my transmitter I set it as a 9 point curve.

Another reason is that an electric motor or a wet fuel reciprocating engine do not have a linear power output band. During the early days with RC helicopter we try to fly at a constant rotor head speed as much as possible. So we tweak the throttle curve to adjust to the load of the rotor head to keep a constant rotor head speed. That is quite a different animal since the single main rotor helicopter usually has collective pitch mixed in with the throttle stick.