Nice one, I thought I had toasted a part on the FC when mine randomly started showing 0 batt voltage all the time. This sorted it out. 2 years ago you helped me get into this hobby setting up a Vortex... still learning!
Nice video, very helpful. However... I have followed the steps and I get the following: When I plug my fully charged 4S battery into my quad the voltage used to show 15.6. I've gone into betaflight and in the power & battery tab change the scale up all the way to 152 and now it ready the battery correctly at 16.8v (while the battery checker is plugged in). But I've taken one of my other batteries that are in storage mode 14.8v... and checked again... Voltage still shows at 16.8 even though the plugged-in battery checker displays 14.8... Any ideas as to what I'm doing wrong here?
@@WhirlyBloke Been in the hobby for 4 years and this was the first time I had to calibrate voltage (T-Motor F4 Flight Controller). Thanks again, take care bro.
For some reason. My battery meter on displays something ( even though the voltage and cell is incorrect) when ESC sensor is selected on the Voltage meter source. WIth that selected I cannot adjust anything on the voltage meter!. I have a 6S at 25.2 volts battery and its showing as 5S 18v
@@FrancescoSignorini11 Sounds like the voltage end point isn't calibrated correctly, your battery charger isn't fully charging the batteries - again calibration of the charger - or the batteries are shot.
Since each cell, when fully charged, should be @ 4.2volts that should give a meter reading of 16.8v on a 4s lipo battery if I am correct. Also, I store my batteries @ 3.7v to 3.8v. You should never let your lipo batteries discharge to 3.0v. I use a small Lipo battery voltage tester that does the same thing as a voltage meter that you can find on eBay.
Thanks for taking the time to comment. Yes, everything you're saying is true and I totally agree. However, the point of this video is calibrating BetaFlight so it accurately reflects the actual cell voltage of the batteries. And that's very important so the pilot knows exactly, well as near exactly as possible, what the voltage is and from that, how much flight time is left. Thanks for watching.
Great video really helpful. Problem I have as soon as I take off my osd voltage drops so quickly almost down to 14.3 4s lipo then if I land goes back Upto the correct voltage. Is that a lipo problem or osd problem?
Using lihv, just adjust the same,?? I got baby ape pro, and all I have lihv batteries, probably a stupid question but can I use lihv batteries in baby ape? Getting on Bf to check it out.
I have an other problem. MY voltage meter on the FC is broken. The rest of the FC is ok. I've been flying with it since then monitoring the voltage via the cameras OSD. But now, since i flashed a new firmware to the FC it will not arm anymore. Can this has to belong to the wrong voltage? Because Betaflight thinks the voltage would be 0V I slready changed the voltage source to "none" but this doesn't seem to help. Is there a setting in Betaflight to allow or not allow arming according to voltage?
Why are the battery settings what they are? I mean the min, max & warning cell voltage settings. I thought default was higher. Is it just so it doesn't beep?
idk what too do i been hell and back trying too figure out whats wrong with my quad everything working fine exept when taking off it acts all jittery and dont fly properly the prop and motor is good only thing i noticed is the battery voltage on betaflight is always at zero with battery hooked up
my betaflight shows zero boltage when battery is connected but everything is getting power and it will arm but have notice it will shot up too the ceiling and not hover when i increase the thottle
This is the latest BetaFlight src code (4.1) that calculates the display voltage from input values. ADC_MAX isn't #defined but is just hardcoded as 0xfff STATIC_UNIT_TESTED uint16_t voltageAdcToVoltage(const uint16_t src, const voltageSensorADCConfig_t *config) { // calculate battery voltage based on ADC reading // result is Vbatt in 0.01V steps. 3.3V = ADC Vref, 0xFFF = 12bit adc, 110 = 10:1 voltage divider (10k:1k) * 100 for 0.01V return ((((uint32_t)src * config->vbatscale * getVrefMv() / 10 + (0xFFF * 5)) / (0xFFF * config->vbatresdivval)) / config->vbatresdivmultiplier); }
My battery voltage is good. When I fly a 1300 mah battery my mah used is 520 and the batters cell voltage is around 3.3 How to I make the mah used more accurate? Thanks !
Calibrating the current is more difficult and to be honest, the cell voltage is much more important. When it gets to 3.5V per cell on a LiPo, you should be landing.
@@WhirlyBloke This is the first betaflight quad I built. My others were bnf and seeing the mah used I’m kinda used to now. Guess I can delete it from my osd.
It's important to keep in mind that different flight controllers and firmware have their own strengths and weaknesses, and what works well for one person may not work as well for another. It's also worth noting that the quality of a flight controller's performance can depend on a variety of factors, such as the quality of the hardware, the settings used, and the pilot's skill level. If you have had a negative experience with Betaflight and INAV, there are many other options available that you may want to consider. Ultimately, it's up to you to choose what works best for your specific needs and preferences.
Good job, way to go. Salute from Brazil.
Thanks for watching and the feedback.
Thanks old chap, this has been incredibly helpful!
Nice one, I thought I had toasted a part on the FC when mine randomly started showing 0 batt voltage all the time.
This sorted it out.
2 years ago you helped me get into this hobby setting up a Vortex... still learning!
Could use a battery checker if you dont have a multimeter as balance lead is free. Great video thanks
If you are flying a DJI drone the flight time till the automatic return to home kicks is displayed on your video screen I believe.
Nice video, very helpful. However... I have followed the steps and I get the following:
When I plug my fully charged 4S battery into my quad the voltage used to show 15.6.
I've gone into betaflight and in the power & battery tab change the scale up all the way to 152 and now it ready the battery correctly at 16.8v (while the battery checker is plugged in).
But I've taken one of my other batteries that are in storage mode 14.8v... and checked again... Voltage still shows at 16.8 even though the plugged-in battery checker displays 14.8...
Any ideas as to what I'm doing wrong here?
Super helpful video, thanks so much mate
Glad it helped.
@@WhirlyBloke Been in the hobby for 4 years and this was the first time I had to calibrate voltage (T-Motor F4 Flight Controller). Thanks again, take care bro.
Great video 👍 thank you 👌🤜⚡
Glad you enjoyed it
Excellent video!
Thanks
Excellent again!! Thanks😊
No problem.
For some reason. My battery meter on displays something ( even though the voltage and cell is incorrect) when ESC sensor is selected on the Voltage meter source. WIth that selected I cannot adjust anything on the voltage meter!. I have a 6S at 25.2 volts battery and its showing as 5S 18v
If I have the Tattu 14.8V 450mah 4s, should I have 14.8 where you have 16.7?
I good, fully charged 4s Lipo will be 16.8v regardless of the rating. 4.2v per cell.
@@WhirlyBloke because after a few seconds the warning appears in the goggles "low battery voltage"
@@FrancescoSignorini11 Sounds like the voltage end point isn't calibrated correctly, your battery charger isn't fully charging the batteries - again calibration of the charger - or the batteries are shot.
@@WhirlyBloke hota d6 pro is my charger; I think it's not the problem of charger. How do I fix the batteries?
Awesome video thanks
does it have to be a charged battery or can it be even a little used?
Doesn't matter.
Thanks so much guy :)
No problem.
how about the ampherage? yours read 63
Since each cell, when fully charged, should be @ 4.2volts that should give a meter reading of 16.8v on a 4s lipo battery if I am correct. Also, I store my batteries @ 3.7v to 3.8v. You should never let your lipo batteries discharge to 3.0v. I use a small Lipo battery voltage tester that does the same thing as a voltage meter that you can find on eBay.
Thanks for taking the time to comment. Yes, everything you're saying is true and I totally agree. However, the point of this video is calibrating BetaFlight so it accurately reflects the actual cell voltage of the batteries. And that's very important so the pilot knows exactly, well as near exactly as possible, what the voltage is and from that, how much flight time is left. Thanks for watching.
Great video really helpful. Problem I have as soon as I take off my osd voltage drops so quickly almost down to 14.3 4s lipo then if I land goes back Upto the correct voltage. Is that a lipo problem or osd problem?
It sounds like a bad or old lipo. They voltage sag very easily.
Using lihv, just adjust the same,?? I got baby ape pro, and all I have lihv batteries, probably a stupid question but can I use lihv batteries in baby ape? Getting on Bf to check it out.
Probably, but check the flight controller, esc and vtx specs first.
@@WhirlyBloke it's all good, and actually the battery voltage was spot on, flies good out of the box
BIG thanks sir :)
No problem. Thanks for the feedback.
Good Stuff. Thanks
Glad you enjoyed it
I have an other problem. MY voltage meter on the FC is broken. The rest of the FC is ok. I've been flying with it since then monitoring the voltage via the cameras OSD.
But now, since i flashed a new firmware to the FC it will not arm anymore. Can this has to belong to the wrong voltage? Because Betaflight thinks the voltage would be 0V
I slready changed the voltage source to "none" but this doesn't seem to help.
Is there a setting in Betaflight to allow or not allow arming according to voltage?
Check the arming prevention flags. The info is here github.com/betaflight/betaflight/wiki/Arming-Sequence-&-Safety
Actually since quad is drawing current all the time, you should measure the voltage while connected to BF and read BF measurement at the same time
Good point. Thanks for the feedback.
That's a great tip thanks! Does this also set the mAh usage at the same time?
That's a separate calibration and a bit trickier.
@@WhirlyBloke ah okay. I need to figure that one out
Jb has a good video on how you do it. Safe way but still kinda tricky.
th-cam.com/video/pj_CaMZ98g4/w-d-xo.html
Why are the battery settings what they are?
I mean the min, max & warning cell voltage settings. I thought default was higher. Is it just so it doesn't beep?
3.5 warning and 3.3 land now are default. But you can change them if you want and know your batteries well.
thanks buddy
No problem. Thanks for watching.
idk what too do i been hell and back trying too figure out whats wrong with my quad everything working fine exept when taking off it acts all jittery and dont fly properly the prop and motor is good only thing i noticed is the battery voltage on betaflight is always at zero with battery hooked up
my betaflight shows zero boltage when battery is connected but everything is getting power and it will arm but have notice it will shot up too the ceiling and not hover when i increase the thottle
Sounds like you've an early Betaflight 4 version with stock PIDS. They used to hit the stars on a tiny bit of throttle on sub 5 inch quads.
@@WhirlyBloke I ended up realizing that my fc orientation was off by 30 degrees so I aligned it 30 negative n it fixed it.
What is ADC_MAX in your formula?
This is the latest BetaFlight src code (4.1) that calculates the display voltage from input values. ADC_MAX isn't #defined but is just hardcoded as 0xfff
STATIC_UNIT_TESTED uint16_t voltageAdcToVoltage(const uint16_t src, const voltageSensorADCConfig_t *config)
{
// calculate battery voltage based on ADC reading
// result is Vbatt in 0.01V steps. 3.3V = ADC Vref, 0xFFF = 12bit adc, 110 = 10:1 voltage divider (10k:1k) * 100 for 0.01V
return ((((uint32_t)src * config->vbatscale * getVrefMv() / 10 + (0xFFF * 5)) / (0xFFF * config->vbatresdivval)) / config->vbatresdivmultiplier);
}
Thanks for pointing this out.
@@WhirlyBloke Right, so it should be ADC_RESOLUTION_MAX in your formula. Thanks.
@@z00n Correct. A typo that I've now corrected.
Thanks! Learned something new! Thumbs up! He he
Thanks.
My battery voltage is good. When I fly a 1300 mah battery my mah used is 520 and the batters cell voltage is around 3.3
How to I make the mah used more accurate?
Thanks !
Calibrating the current is more difficult and to be honest, the cell voltage is much more important. When it gets to 3.5V per cell on a LiPo, you should be landing.
@@WhirlyBloke
This is the first betaflight quad I built. My others were bnf and seeing the mah used I’m kinda used to now. Guess I can delete it from my osd.
Subbed you brother
Thanks for the sub
The new version of BF has a calibrate button. easy peasy. Measure the voltage put it in the calibrate box. Click the button. and that is it :D
Betaflight just gets better and better.
your flight controller detects the battery as a 5s
That's cos it wasn't calibrated.
Thank you my was off by 2 points
betaflight has been around forever and its still absulute junk ill never ever leave fettec im only using inav for my wing and its just shit
It's important to keep in mind that different flight controllers and firmware have their own strengths and weaknesses, and what works well for one person may not work as well for another. It's also worth noting that the quality of a flight controller's performance can depend on a variety of factors, such as the quality of the hardware, the settings used, and the pilot's skill level.
If you have had a negative experience with Betaflight and INAV, there are many other options available that you may want to consider. Ultimately, it's up to you to choose what works best for your specific needs and preferences.