01-May-2017, 02:09 AM
I have been flying my DIY Martian frame for a few months now and have been using 3S batteries to get used to it. After feeling confident enough to change to 4S (more power) i flew a pack at a local park. WOW! What a difference!
Anyway, I had been doing some sharp turns and flips and was bringing her in for a landing after about 5 minutes of flying. I had just enough battery to do one more flip so I punched the throttle from about 3 feet off the ground and at about 10 feet my video feed spun (indicating something bad just happened) and it crashed (not hard) into the soft grass. I killed the motors quick smart and took off my goggle just in time to see a puff on magic smoke. I had fried number 2 ESC and as it turned out, the FC also.
The motors are 3-4s Sunny-Sky R2205 2300KV and the ESC's are Aikon BLheli-S 20a, also 3-4s compatible.
I read this https://oscarliang.com/esc-on-fire-burn-smoke/ and decided to ask Oscar and the group what might have happened.
I have included a screen shot of my PID's and FYI, I am running Oneshot 125 for the ESC/Motor Protacol in Beatflight. Unfortunately I only figured out how to configure Black Box today. I had it set to record on a UART instead of internal flash so I don't have any data to share.
I replaced the FC (Airbot F3) and the dead ESC and ran through 6 x 3s packs again this morning without a hiccup. I'm a bit scared to run the 4s packs until I figure out what's going on.
I'm not expecting a definite answer here, that would be impossible, but rather an idea of what to look for.
Thanks in advance
Aussie
Anyway, I had been doing some sharp turns and flips and was bringing her in for a landing after about 5 minutes of flying. I had just enough battery to do one more flip so I punched the throttle from about 3 feet off the ground and at about 10 feet my video feed spun (indicating something bad just happened) and it crashed (not hard) into the soft grass. I killed the motors quick smart and took off my goggle just in time to see a puff on magic smoke. I had fried number 2 ESC and as it turned out, the FC also.
The motors are 3-4s Sunny-Sky R2205 2300KV and the ESC's are Aikon BLheli-S 20a, also 3-4s compatible.
I read this https://oscarliang.com/esc-on-fire-burn-smoke/ and decided to ask Oscar and the group what might have happened.
I have included a screen shot of my PID's and FYI, I am running Oneshot 125 for the ESC/Motor Protacol in Beatflight. Unfortunately I only figured out how to configure Black Box today. I had it set to record on a UART instead of internal flash so I don't have any data to share.
I replaced the FC (Airbot F3) and the dead ESC and ran through 6 x 3s packs again this morning without a hiccup. I'm a bit scared to run the 4s packs until I figure out what's going on.
I'm not expecting a definite answer here, that would be impossible, but rather an idea of what to look for.
Thanks in advance
Aussie