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Tagged: VBAT
- This topic has 2 replies, 2 voices, and was last updated 8 years ago by NI2O.
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7 September, 2016 at 17:43 #33048NI2OParticipant
hi guys, I just finished building Baby copter, and started setting up the F3 board. but I’m having strange issue with battery monitoring. I’m using 4s 1300mah battery for baby tricopter, and this battery had roughly 15.30v when I tested the battery voltage in cleanflight, but battery voltage monitoring in cleanflight indicated 25.5v which is unrealistic voltage from 1300mAh 4s battery. by the way the voltage scale setting is 110 which is default setting in cleanflight, so I was considering to adjust the voltage scale to roughly get close to the real battery voltage. but I think I should find out why its reading completely wrong voltage first before take the action to try maiden flight. do you guys know what’s making this massive discrepancies?
thanks guys!Attachments:
9 September, 2016 at 06:07 #33086CrazyJParticipantI think David mentions in the build video that the voltage scale should be 360.
9 September, 2016 at 07:50 #33091NI2OParticipant@CrazyJ
as you can see in the attachment picture shows the scale of the output voltage to milliamps part in Current sensor is already 360, and the voltage scale in VBAT part is only able to rise to 255 maximum. so it doesn’t work for my case,,, the wrong voltage number which is 25.5v reminds me of the issue from Naze32 board. this was solved as replacing the resistors to make it work,
(http://rcexplorer.se/forums/topic/wrong-vbat-voltage-fix/)
but this issue is on the F3FC board for the baby tricopter, so it could be a different thing that is causing this issue. I’m not the export to find out way, so this is a bit of a pain ):
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