No, unfortunately. I'm not even sure if my theory is correct. Anyway, your's must be a second hand Inspire, I assume, since 01.02.0100 was introduced in April. Well, keep your bird on this FW and pray for flawless performance than.
Oh, I see ... I believe that this **** hovering dance start appearing sometime around November 2017. Bottom line is that if your bird is hovering steady - wind or not - than she's apparently immune to this disease and OK. 0200 supposedly solved this in general, introducing a plethora of other issues in exchange. As for now you can't do much more than overall testing. Good luck!
Speculating further in the spirit of healthy discussion ... Naturally there must be a complex performance testing procedure involved for all electronic subsystems like the one you mention above, at every manufacturing and assembly stage, automated or manual. Without it our birds will be falling like rotten apples. Personally I'm amazed by the reliability of these fine machines.As I have already noticed, there is no way to retrieve any iformation from S/N number, so we can only compare software, not hardware. But hardware may be different from part to part of production.
I will tell you why. The main differences in hardware may be in simple components used to build a PCB. For example my ESC. There are three resistors with resistance of 2 mOhms. Small part. Doesn't matter!? No it does!!!
All resistors have a parameter called tolerance from 0,5% to 3%. Not much! But when you consider Ohm's law there will be differences in current values. U=I*R. This tolerance means, the resistor may be from 1,99 - 2,01 mOhms with 0,5% to 1,94 to 2,06 mOhms with 3% The differences are small. Lets calculate U. For example let's take a TB50 battery. 22.8 V and 4280mAh (max current 4280mA in an hour). Let's start the motor with max current. U=4,28A*0,00194Ohms=8,3mV and U=4,28A*0,00206Ohms=8,8mV. This is a voltage drop on resistor with tolerance of +/-3% . In percentage there is 6% difference in voltage. Much more than tolerance of the "worst" and "best" resistor.
With this current works ESC. For example the main flight controler wants the motor to rotate with 4000rpm but it doesn't. It rotates 6% faster or slower than it should or the main controler expects.
In the attachment there is my new ESC manufactured on 7/2018. You can see the difference in resistors - white strip - different producer?! What tolerance, I don't know!
We've got hundreds of small electronic elements - resistors, capacitors, etc., are affecting on how I2 works.
The hope is that this small "bad" elements do not have any effect on how I2 flights, but I do not think so...
For example Mfr. No: LVT08R0020HER - This is a resistor of 2mOhms with tolerance H = 3%!!! Letter D=0.5% F=1% G = 2%. And this is obvious better tolerance higher price!
PS
I'm not an electronics engineer, wondering now if i should public this post at all ;-)
And I do not know what the current is on ESC, but my calculations are supposed to serve only to illustrate differences in SMD elements
View attachment 22060
Won’t have any effect since the motors are driven with PWM varying the duty cycle and the back emf gives the FC exact rotational speed information irrespective of tolerance difference in individual components within the esc’s.As I have already noticed, there is no way to retrieve any iformation from S/N number, so we can only compare software, not hardware. But hardware may be different from part to part of production.
I will tell you why. The main differences in hardware may be in simple components used to build a PCB. For example my ESC. There are three resistors with resistance of 2 mOhms. Small part. Doesn't matter!? No it does!!!
All resistors have a parameter called tolerance from 0,5% to 3%. Not much! But when you consider Ohm's law there will be differences in current values. U=I*R. This tolerance means, the resistor may be from 1,99 - 2,01 mOhms with 0,5% to 1,94 to 2,06 mOhms with 3% The differences are small. Lets calculate U. For example let's take a TB50 battery. 22.8 V and 4280mAh (max current 4280mA in an hour). Let's start the motor with max current. U=4,28A*0,00194Ohms=8,3mV and U=4,28A*0,00206Ohms=8,8mV. This is a voltage drop on resistor with tolerance of +/-3% . In percentage there is 6% difference in voltage. Much more than tolerance of the "worst" and "best" resistor.
With this current works ESC. For example the main flight controler wants the motor to rotate with 4000rpm but it doesn't. It rotates 6% faster or slower than it should or the main controler expects.
In the attachment there is my new ESC manufactured on 7/2018. You can see the difference in resistors - white strip - different producer?! What tolerance, I don't know!
We've got hundreds of small electronic elements - resistors, capacitors, etc., are affecting on how I2 works.
The hope is that this small "bad" elements do not have any effect on how I2 flights, but I do not think so...
For example Mfr. No: LVT08R0020HER - This is a resistor of 2mOhms with tolerance H = 3%!!! Letter D=0.5% F=1% G = 2%. And this is obvious better tolerance higher price!
PS
I'm not an electronics engineer, wondering now if i should public this post at all ;-)
And I do not know what the current is on ESC, but my calculations are supposed to serve only to illustrate differences in SMD elements
View attachment 22060
True. Bridion used ESC board as an example to illustrate the variables FC must to deal with during flight. We are just speculating about possible reasons for hovering instability of some Inspire 2 specimens, introduced long time ago after particular FW version.
You are absolutely right!
