Converting deVention values to deviation values

Converting deVention values to Deviation values

When you make models for the Deviation Firmware you need to convert some values that the manual lists to use so I made this list.


If a manual uses 0-100 values convert those to -100 to +100 values: value X 2 -100

Example: Manual says to set a value to 70% then 70x2-100 = 40% deviation value.

Example: Throttle Curve - Manual says to set these values: 0% 42% 65% 78% 80%

You would use these values for the deviation values: -100% -16% 30% 56% 60%

This also applies if you want to make a V Shaped Throttle Curve.

Example: Manual says to set the values to 100% 90% 80% 90% 100%

You would use these values for the deviation values: 100% 80% 60% 80% 100%

Example: Gyro Gain - Manual says to set this value: 82%

You would use this value for the deviation value: 64%

Example: Gyro Gain - Manual says to set this values:

GYRO:

RATE SW-GYRO
0: 100.0%
1: 0.0%


You would use these values for the deviation values:

GYRO:

RATE SW-GYRO
0: +100.0%
1: -100.0%



If a manual uses -100 to +100 values then no need to convert those values. Input them as they are.

Example: Pitch Curve - Manual says to set these values: -35, -25, -15, 0, 33, 66, 100

You would use those values also for the deviation values: -35, -25, -15, 0, 33, 66, 100


Example: Throttle Curve - Manual says to set these values: -100, -66, -33, 0, 33, 66, 100

You would use those values also for the deviation values: -100, -66, -33, 0, 33, 66, 100



For a Linear Curve you do not need to convert the values.

Example: Pitch Curve for Stunt Mode - Manual says to set these linear values: 0% 25% 50% 75% 100%

You would use those values also for the deviation values: 0% 25% 50% 75% 100%

Example: Throttle Curve for Normal Mode - Manual says to set these linear values: 0% 25% 50% 75% 100%

You would use those values also for the deviation values: 0% 25% 50% 75% 100%



Dual Rate and Expo you do not need to convert the values.

Example: Dual Rate - Manual says to set this value: 70%

Then you would use that value also for the deviation value: 70%


Example: Expo - Manual says to set this value: 30%

Then you would use that value also for the deviation value: 30%



More information coming soon...
If you have something you would like to add to this, post it in this thread.

Tom Z wrote: Example 2: Manual says to set these values for a Throttle Curve: 0% 42% 65% 78% 80%

Then you would use these values for the deviation values: -100% -16% 30% 56% 60%

My easy way to do the conversion to Devo to Deviation in your head

Ex: Convert 80% setting of a 0-100% range to the deviation -100 to +100 range:

• Start with the Devention full scale value, eg. 100%
• Subtract the Devention setting from the full scale value: 100% - 80% = 20%
• Multiply the result with 2: 20% x 2 = 40%
• Subtract the answer from the Deviation full scale value: 100% - 40% = 60%

Hope this helps.

rbe2012 wrote:

Tom Z wrote: Example 2: Manual says to set these values for a Throttle Curve: 0% 42% 65% 78% 80%

Then you would use these values for the deviation values: -100% -16% 30% 56% 60%

Thanks. I did forgot to convert that one. I edited the post.

Thanks RandMental.

RandMental wrote: My easy way to do the conversion to Devo to Deviation in your head

Ex: Convert 80% setting of a 0-100% range to the deviation -100 to +100 range:

• Start with the Devention full scale value, eg. 100%
• Subtract the Devention setting from the full scale value: 100% - 80% = 20%
• Multiply the result with 2: 20% x 2 = 40%
• Subtract the answer from the Deviation full scale value: 100% - 40% = 60%

Hope this helps.

I have another method
Ex: Convert 80% setting of a 0-100% range to the deviation -100 to +100 range:

• Substract 50% from the Devention setting: 80% - 50% = 30%
• Multiply the result with 2: 30% x 2 = 60%

Ex2: Convert 30% setting of a 0-100% range to the deviation -100 to +100 range:

• Substract 50% from the Devention setting: 30% - 50% = -20%
• Multiply the result with 2: -20% x 2 = -40%

Thanks domcars0.

Can somebody see if I have everything here correct or not for Dual Rate.


1. Scale -/+ with the defaults of -100/+100 on this option page are for Dual Rate.

Picture 1.





2. If I have Scale set to 100 (Picture 2) I will have 100% servo travel using the defaults of -100/+100 in Picture 1.

Picture 2.





3. If I have Scale set to 125 (Picture 3) I will have 125% servo travel using the defaults of - 100/+100 in Picture 1.

Picture 3.




4. If I want 150% servo travel what do I increase the values to in Picture 1
so that when I set the Scale in Picture 3 to 125% I will get 150% servo travel?



.

OK I assume my questions 2 and 3 are correct as nobody said they were not so that is good.

And the answer FDR posted was for question 4 I take it.

4. If I want 150% servo travel what do I increase the values to in Picture 1
so that when I set the Scale in Picture 3 to 125% I will get 150% servo travel?


Set the scale- and scale+ to 125...

Thanks!
I am making some more models to post here and need to set the DR over 100%.
I don't think I will need to go more that 125% max as the servos might bind but if I need to I know now how to do it.

I need to make these gyro values which use 0-100%.

GYRO:

RATE SW-GYRO
0: 100.0%
1: 0.0%

For the deviation values I would use:

0: +100.0%
1: 0.0% - Is this correct or would I use -100% instead of 0%?

I think you should use -100%

Your gyro values are from min=0% to max=100%
Deviation uses values from min=-100% to max=+100%

Thanks. I was thinking "0%" would convert to "0%".
I added this as an example in the first post.