Reading battery voltage in software

[RyanN]

Originally Posted by htwiz2002

Wait! What type of variable is it?!?! When I try to read it it outputs a number greater than 16k!
I'm building a terminal interface (for debugging) it outputs a really strange value when I do:

printf("%d",battery_voltage);

Can anyone help?

I'm having the same problem, and I cannot figure it out at all!!! I've contacted our main programmer, I tried the code earlier (which gave me a reading of 70), and I've looked over and over in the code.

[Bomberofdoom]

Holy cow! I know it's possible (it sounds possible), but I never knew there was such a thing in the code. Thanks!

[Qbranch]

I have, in the past, used the main battery voltage to formulaicly modify the multiplier on the P term in the PID for the wheel motors (rate control). Worked great!

Also have used it to make power limits on non-servo systems vary to have the same power output (mechanical) regardless of lower battery voltage.

I.e., 25% power limits that stay constant regardless of battery voltage.

-q