Search results

I managed to get it working in the end. I know there is also an autotune routine which I will try to get it just right. Thanks

Update. Should have googled first '20% lipo rule'. Interestingly from what I read people seem to fly until their lipo alarms go 3.3v? But then once back on the bench the resting voltages recover up to 3.7v or so. This is actually my experience but have only just started monitoring charging mAh...

Ok but 20% of what exactly? The voltage on take off is 12.6v and will drop down to say 10.4v. Are you saying I should only use 20% of the battery? So 80% remaining would be 10.1v. I have been told don't go beyond 9.9v. If I'm wrong can you explain the 20% thing. Thanks!

Thanks for that. I've actually just started keeping a log. A couple of them are over the 4000mAh when charging. I would have assumed that if you drain to 9.9v on 3s (which is the point the stop flying) then fully charging would stick 5000mAh back in. Is that the general principle?

Yes it's standard DJI motors - 2212 / 920Kv but the ESCs are 30A, supplied as standard. The 5000mAh battery. I think it's 20c.

Yes, sorry typo. It's 5000 mAh.

..Not sure if that's the correct term for what I'm experiencing. I charge a 3s battery to 12.6v. Once it's off the ground the levels are immediately into the 11.x range. I have a 1st warning beep set on my Tx of 10.6v and 2nd set at 10.4v. Within a couple of minutes I start getting beeps when I...

I realised the flight controller - Pixhawk - keeps logs of the flights. When I was at maximum throttle it went up to 6000 - Assume that's 60amps. These were surges only when rapidly climbing and longest was for about 5 seconds or so to shoot up to 88m. So anyway I'm assuming this is what fried...

Yes. More to learn it seems but so far I've been learning through mistakes and problems. And reading a few forums on this issue. This is old thread admittedly: http://www.rcgroups.com/forums/showthread.php?t=1281209 But it seems to contradict your view. Eg: 'deans are the best. I saw it draw...

I'm going to go with bullets and yes I can see how you would need to get the heat shrink just right to avoid shorts. Question about Amps? Can I measure this through a formula or do I need to actually measure in circuit? If I measure myself I thought without props on the Amps may be different as...

Thanks. I'll stick with the same battery configuration and beef up the connectors.

I have 2 3s lipos in series to create 6s power for an octocopter. Whilst flying I lost all power and found that my positive connection on the deans had got so hot it sunk into the plastic body and disconnected. I had a look at the connection and the gold contact was completely buried. Photo show...

I have limited experience. Up until now it's been a F550 which has 920kV motors on a DJI Naza. It's an assembly job but relatively easy as it's all designed to work together. This time I been more ambitious with a huge 8 motor 320kV power. When I first armed the power and noise I think freaked...

So when I calibrate ESCs it seems there are 2 different objectives and I only see one way of calibrating. Objective 1 - to set brake, battery type etc. - Listen to bleeps and pull stick down when you get to the right bleep - Fine no problem. For Turnigy Multistar hearing the intro bleep and...

Managed to get somewhere. Seems like HR_MAX, THR_MID, THR_MIN do effect changes. You need to turn system on and off for it to have any effect.

Well I've had a look through and don't see any other parameters I can verify as they all seem related to flight. I've tried changing MOT_SPIN_ARMED, THR_MAX, THR_MID, THR_MIN. Eventually reducing all values to zero. Each time I arm I get a tone. No rotation but on slow increase of throttle at...

Thanks. I've tried those settings but nothing seemed to change. I then tried reducing to zero along with the min throttle too but no change. I think I need to try another parameter that can confirm the process is actually working - ie that I am actually able to change parameters and see the...

I think I have everything correctly set up but when I arm and power up the motors (without props) scream into action. Very sudden and very powerful If the props were on it would shoot through the roof! Where might my problem lie? Pixhawk flight controller. 8 x 45A multistar ESCs 8 x Multistar...

Thanks. I went with the one by one option and managed to use non-PPM setting on the same Rx. It all seemed to go fine but the motors are as fast as ever. Screaming at full tilt it seems when throttle stick goes to the centre position. I tried putting one blade on and pinned it down and as...

I did my first flying on the Isle of Wight. Probably a bit reckless but was flying way out to sea near Bembridge lifeboat launch. Also Bembridge Windmill for an early attempt at aerial filming. Hope it goes well!