So I have recently been doing a lot of research into OSD or On Screen Display systems. Being a broke college student just getting into FPV, and also in quad rotors, I would not like to have a new quad crash because of low voltage. I would also like to take very good care of my lipo's so this brings me to my point. Has anyone ever seen an OSD that not only measures the voltage, but also the current for under 30$? I have noticed a gap in functionality between the 20$ and 80$ OSD's and none of the lower ones' have a current display. Would anyone like to point me in the right direction? GPS, heading, co-ordinates, and everything else, are not very important to me. I would just like current, voltage and capacity expended. Thank you so much!