Multirotor, multicopter and quadcopter discussion - The Drone thread

gandhi said:
Just checking, but you are doing all this with the props off, aren't you?

Good.

Have you calibrated the esc's? If not, do that first. Plenty of videos on how to do it via cleanflight on YouTube.

Set your minthrottle - again have a look on YouTube.

Set your mincommand to something like 990.

It sounds like two of the four esc's have their low set point too close to where your mincommand is set.

Three values:

Mincommand is the value the fc sends to the esc when it's armed but the throttle value is below mincheck. Mincheck is the value you set for the bottom of the throttle range. The throttle needs to be below this to arm the quad. This is to protect you from arming a quad with the throttle up. Minthrottle is the value the fc sends to the esc when the quad is armed and the throttle position is above mincheck. Ideally this needs to be calibrated so all motors spin up together.

All of these need to be set correctly and the esc's calibrated.
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Sweet, here is a quick overview of what I've done.

Flashed all ESC's (DYS XM20A's) to 14.8, revered motors 1 and 4 in BlHeli as I didn't cross wires.

Opened clean flight, set min throttle to 1000, max to 2000 (saved).

Went to the motors tab (battery unplugged at this point), set master tab to max, ticked yes I don't have props on and have a tiny bit of common sense. Plugged battery in. Beeps, slider to 0, beeps.

Slowly increase master slider until all 4 are spinning fine, add 10 onto said value and set that as my min throttle (for example, 1045 was the value I set on).

That's it...

It seems no matter what I do now, it won't stop them twitching.

I'll run through what you posted now and let you know.

Nope, still the same... I guess this just isn't going to be easy to solve until I get the Taranis.

Does it matter than the PPM min throttle in BlHeli is lower than that in CleanFlight?
 
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Weird. XM20s are a very good and very well known ESC, and I've never heard of it happening on those ESCs.

Does it still happen if you turn off oneshot? And are you using the twisted pair for the throttle signal? Some people get rid of the black wire, which you shouldn't as it protects against EMI.
 
Bigpops said:
Weird. XM20s are a very good and very well known ESC, and I've never heard of it happening on those ESCs.

Does it still happen if you turn off oneshot? And are you using the twisted pair for the throttle signal? Some people get rid of the black wire, which you shouldn't as it protects against EMI.
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I tried enabling one shot, it simply just does a beep every couple of seconds. Not the normal start up beep.

Nope, black wire all there, I just swapped over wires on the Naze, can 100% confirm it's only channels 1 and 2 that are doing it. So doesn't matter on motor, it's the signal channels 1 and 2. The only things I've done today is solder up the remaining pins for the PPM channel for the FrSky receiver and the pins for the buzzer and telemetry. I plugged the buzzer in to test, it buzzed. Wouldn't stop pulse buzzing until I removed it, assumed this was just due to not being calibrated...

One thing I also did was update the firmware from 14.6 to 14.8. Might go back to see if it helps - Nope, didn't help.

So yea. Either I've cocked something up or something isn't right.
 
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agnes said:
I tried enabling one shot, it simply just does a beep every couple of seconds. Not the normal start up beep.

Nope, black wire all there, I just swapped over wires on the Naze, can 100% confirm it's only channels 1 and 2 that are doing it. So doesn't matter on motor, it's the signal channels 1 and 2. The only things I've done today is solder up the remaining pins for the PPM channel for the FrSky receiver and the pins for the buzzer and telemetry. I plugged the buzzer in to test, it buzzed. Wouldn't stop pulse buzzing until I removed it, assumed this was just due to not being calibrated...

One thing I also did was update the firmware from 14.6 to 14.8. Might go back to see if it helps - Nope, didn't help.

So yea. Either I've cocked something up or something isn't right.
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If it's only channels 1 and 2, try altering the motor mix to move those to outputs 5 and 6.

Video guide (same for Cleanflight)
 
unKle said:
Just been watching that, he's done a good job there, no focusing issues.

Will be a few months before anyone gets one judging by the DJI forums. People on there are going into meltdown, spitting dummies, threatening to cancel, official action against DJI etc.

I received an email (today) and an update on my account apologising for delay, they've obviously been caught out with their estimations on how popular it is and by how many people have pre-ordered. Not being able to fulfill the orders as predicted has really riled people up the wrong way.
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It's been the same with every DJI launch as far back as I can remember. The Inspire was especially bad with a 2-month delay on shipments. I think they do it on purpose.
 
Bigpops said:
If it's only channels 1 and 2, try altering the motor mix to move those to outputs 5 and 6.

Video guide (same for Cleanflight)
Click to expand...

Will give it a shot tonight and see the outcome, if I put other motors into channel 1 or 2, same thing happens to them.

I'm going to stick with it for the moment and wait until I've got everything wired up and the Taranis to complete the calibration. If it's still buggy and I can't work out why. I'll order a Flip 32 F3.
 
before you do that - have you set the mincommand?

It's on the GUI I think, try setting it to 900 and see if that helps.

Certainly an odd one - the FC is sending a pulse to the motors for some reason when they aren't armed.

It might well add more confusion into the mix, but you could try flashing betaflight to the FC (it's a better FW than cleanflight tbh) and see that changes anything?
 
If I got this right you are finding a problem before you plugged your receiver into the flight controller? That could be the issue in itself. I would wait until you have your Tx/Rx setup before debugging this any further?
 
Rilot said:
It's been the same with every DJI launch as far back as I can remember. The Inspire was especially bad with a 2-month delay on shipments. I think they do it on purpose.
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When I ordered earlier this week it responded with a mid-November delivery. Judging by your experience I should prepare to be receiving a Christmas present instead!
 
Would you say a 200mm battery strap is enough for a ZMR 250 frame?

Oh, update, I fully flashed everything and the motor twitching has now gone...
 
Ahhhh, last item I have to buy and it's nowhere to be found in the UK for a decent price!

Taranis X9D plus. SO expensive.
 
Yea, just paid £190 to get it off a UK seller on eBay.

Anyway to make 100% sure it's not some cheap clone, or is that not a thing in the transmitter world?
 
There's no money in faking an already cheap radio. £150 is cheap btw. Even at £190, it's still good value.

The last radio I bought for my helis is now £600 post Brexit. Fortunately I bought mine in February for £444.
 
Bigpops said:
There's no money in faking an already cheap radio. £150 is cheap btw. Even at £190, it's still good value.

The last radio I bought for my helis is now £600 post Brexit. Fortunately I bought mine in February for £444.
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For someone starting out in this hobby, it's an expense, along side the FPV goggles which I'll be getting in a few months, it's costly :( BUT, an investment, I know this.
 
agnes said:
For someone starting out in this hobby, it's an expense, along side the FPV goggles which I'll be getting in a few months, it's costly :( BUT, an investment, I know this.
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It is expensive aye the initial layout.

As my quad was RTF I got a flysky fsi6 with mine, pretty decent budget radio really.
 
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