MultiWii

Ok guys, think i fixed it! I found that even when i reduced the potential going into the potential divider to 1v, pin a15 was still measuring 2.3 v. Some extra volts were somehow getting added to the output from the potential divider. I therefore decided to go into the code and disable the pull up r...

Here's the relevant section of code: #define VBAT // uncomment this line to activate the vbat code #define VBATSCALE 115 // (*) (**) change this value if readed Battery voltage is different than real voltage #define VBATNOMINAL 126 // 12,6V full battery nominal voltage - only used for lcd.telemetry ...

I have the nominal voltage set to 12.6, the fully charged voltage of my 3s battery. Is that correct?

Please feel free to ask simple questions! There's more than likely something dumb i have missed...

Yup, been doing it in the code and hitting 'reset' in the gui...

Ok, I set up a jumper which takes the full 5v to the chip, and now a 51k/33k voltage divider is being read by multiwii through it's full range - wahey! However, the scaling doesn't seem to be working correctly. I have adjusted the vbat scale such that multiwii reads 11.70 on a battery which I have m...

Cereal Killer - I have tried exactly that, using a 68k/33k to keep my fully-charged voltage scaled below 4v. That seems to work, but i don't seem to be able to set VBATSCALE in a way that properly follows the voltage with this arrangement... schupperm - That explains everything! What is the reason t...

I have tried both: '#define OVERRIDE_V_BATPIN A15' ...in config.h #define AUX4PIN A0 #define V_BATPIN A15 ...swapping Aux4 and vbat in def.h my vbat setup looks like this: #define VBAT // uncomment this line to activate the vbat code #define VBATSCALE 115 // (*) (**) change this value if readed Batt...

Hi All, I'm having real trouble getting voltage monitoring working on my HK multiwii pro board using a 56K/33K voltage divider (3s battery). I have re-assigned the V_BATPIN to A15 as many other threads suggest, as A0 is not broken out on the multiwii pro. However, no matter what voltage i put throug...

Thanks for the tip - I am now running MWOSD, but have exactly the same problem... However I have noticed that when I plug in a usb cable to the multiwii board, it starts working perfectly! Then I unplug the USB, and it jumps back up to 13v again... Is it possible that multiwii is for some reason not...

Hi all, I have just managed to set up voltage monitoring on my quadcopter, which I did using a voltage divider hooked up to an assigned pin on the multiwii board. I have enabled all the relevant parts of the code, set the vbatscale, and as a result it appears to be reading correctly in the multiwii ...