"Buy a Lipo for your R/C transmitter and just charge it with your regular flight Lipos. But watch out! The polarization on a lot of the Lipos that are recommended here are swapped. You will fry your R/C transmitter if you don't fix them first.
"Yes, they are really that good. That's why I ended up with 4 of them. :-)
Even after quite a few cycles they are still performing great. The plateau voltage stays pretty high and temperatures of the Lipo are very reasonable.
Personally I wouldn't…"
"On your FPV TX you have two cables coming out:
- Cable with red plug. This is for power and goes onto the LC power filter, which in returns connects to the FatShark filtered balance lead.
- Cable with black plug. This is for the video signal. the…"
"But looking at your throttle curve, I can see that towards the end of the flight you have to give 100% throttle for a long period of time to keep the quad in the air. That doesn't leave room for any maneuvering and most likely was a factor in the…"
"Telem2 is used to display flight data on the display of the R/C transmitter. The FrSky R/C transmitter/receiver in IRIS and IRIS+ comes with it's own Telemetry capabilities. While unused in IRIS, IRIS+ now makes use of that. See here for more: …"
"I wouldn't call that fixed. It's probably just luck.
Before I discovered that the Pixhawk would touch the GPS module I could have a series of a dozen or more flights without issues and all of a sudden a flight where IRIS dropped out of the sky. …"
"Gary, the altitude reported by your Barometer and GPS differ quite a bit. That shouldn't be the case. I can see that the vibrations along the z-axis are very high, which is most likely the cause for the barometer malfunctioning.
"At a flying field altitude (ASL) of 3,812 metres (12,507 ft) you don't have enough lift with a stock IRIS to fly safely. You actually need close to 100% throttle at that altitude just to keep hovering in the air.
Look at the throttle from your tlog…"