Dear all,yesterday my beautiful hexacopter crashed from a 30m altitude. I'm pretty sure all of you know the feeling, and it's part of this hobby. I'm going to fix this, however I'd love to have some…Continue
Sorry to hear about your crashed. I also had my fair share of crashes. Expensive crashes.
Anyway, here is a good read about Li-Po Batteries. According to the loggings, your batteries are the cause of the problems.
"Roberto, if you have another 4s battery do this: charge just like you did last time or always, after that, take a voltimeter and measure how is the total and how is each cell, that should reproduce the problem as it seem both were the same."
"Zedtwidtz: please read the other repsonses from other posters before replying. Roberto posted pictures of his setup, showing the GPS securely fixed and the correct way up. The issue was Roberto battery ran out of power. We are still not sure why,…"
"There is no such recommendation. The RX is not drawing high currents like servo's do and you can easily power it directly from the APM inputs power rail.
I have it setup like that using a Rangelink RX and have done about 80 flights doing so."
"Incorrect, and Roberto's chargers displays the values properly.
LiPo cells are 4.2V charged and 3.7V discharged, each cell loses 0.5V.
3S: 12.6V --> 11.1V (1.5V difference, 3 x 0.5V)
4S: 16.8V --> 14.8V (2V difference, 4 x 0.5V)
"Good luck - look forward to seeing your quad fly.
Your charger looks fine, I wouldn't fiddle with it. But your battery fully charged voltage should = Number of cells x 4.2.
3 cell = 12.6V
4 cell = 16.8V
BTW, you get used to…"
"Ilya, not really, the video is basically a showcase for the rulling shutter (aka the jello effect) :)
Not sure why, but this quad seemed to be much less stable than the hexacopter I first crashed. I guess anyway I could fly both of them too little…"