Recent Posts

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21
General Discussion / Re: Problem with the engines speed
« Last post by Seven5555 on June 20, 2018, 06:38:03 am »
i adjusted the update rate from 490 down to 270 and same thing. I arm it and as soon as the motors get signal from the throttle, they are full on and it flips over.
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General Discussion / Re: Problem with the engines speed
« Last post by Seven5555 on June 20, 2018, 06:21:18 am »
this is what i have.  Please tell me what I need to adjust. I appreciate you help. setup like this, it is full on when i bearly add throttle
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General Discussion / Re: Problem with the engines speed
« Last post by TheOtherCliff on June 20, 2018, 12:47:46 am »
Both Input and Output pages must be correct.

Throttle/Thrust Neutral on Input page should be about 1040 (as I recall) if Min is 1000.
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That says "better power comes from USB" which says "try different power option on battery".

I always keep all my ESC BECs enabled.  Try leaving all the ESC red wires connected on the servo / control signal connector.

Some stand alone BECs have a 5v/6v jumper.  If you have a higher voltage option on the BEC you could try that.

Try a different type of power (different brand of BEC) on the quad.
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General Discussion / Re: Problem with the engines speed
« Last post by Seven5555 on June 19, 2018, 10:06:03 pm »
I'm having a similar problem. The motors are stopped when I arm but are full on when I add a little throttle. I'm having this problem with a hex and a quad. The neural point is set right in the output tab. They are at 1065 and gradually speed up but with the transmitter its all or nothing. Its uncontrollable and flips over every time I try to fly.  How do I get it to gradually speed up?
26
Vehicles - MultiRotors / Re: ESC will not initialize unless Revo is USB powered
« Last post by avu2 on June 19, 2018, 06:58:54 pm »
When I power up the Revo with USB then connect the battery and then I remove the USB from the Revo and rely only on telemetry, everything looks OK in GCS Flight Data and UAV Objects : no I2C error, ext mag showing good readings, INS13 converged with external mag only, GPS 3D fix, so I think the wiring is OK. The ext mag is correctly calibrated (green with a few yellows) and oriented with the internal mag, motors are spinning (without propellers) on output configuration test or when armed. So the advice would be to change this external magnetometer, that will take time. Until then I may try this particular power on sequence before flying. Thanks again both of you.
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When powered only with USB, the ports are not powered, so the I2C mag is not powered.  It gets temporarily removed from the list of devices and that lets everything else work.  When you use the battery, it sees the mag and has constant problems talking to it.  Be aware that you must connect SCL to SCL and SDA to SDA.

You don't need a different LiPo.

You may want to search the forum.  I know there are some new, different mags out there and one of the programmers (mr_w) at least has a private version that works with some newer mag.
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Vehicles - MultiRotors / Re: ESC will not initialize unless Revo is USB powered
« Last post by Rickolas on June 19, 2018, 05:54:23 pm »
Might sound daft, but have you set the home location and calibrated the Mag?
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Vehicles - MultiRotors / Re: CC3D _ F450 _ Very Unstable Take Off & Flight
« Last post by TheOtherCliff on June 19, 2018, 05:46:59 pm »
That is a long topic.  Here is a Google search.  Oscar Liang is a good source.
https://www.google.com/search?q=program+OR+flash+ESC

Well first of all, you must determine the brand of the CPU inside the ESC.  For first timers, if you don't even know the brand of ESC (usually true when bought from eBay), you should probably take the heat shrink off of one and check this list (has links to pictures):
https://docs.google.com/spreadsheets/d/13tMlu5ldLNpZXwbe6UhDHJhcgTVuljm8HDiDp9WO9Pk/edit#gid=0

You need different stuff for Atmel (SimonK or BLHeli) vs. SiLabs (BLHeli only).  BLHeliSuite software works for both Atmel and SiLabs.  That is what I use or at least recommend.  I often use "avrdude" directly, which is what BLHeliSuite calls.

This Atmel CPU clip is handy, but it costs a lot of money ($25+).  Sometimes I just cut 3 sides of a square in the heat shrink (a flap just over the CPU) and program it with this.  Seems to be out of stock a lot.
https://www.ebay.com/itm/AVR-Atmel-Atmega-TQFP32-Socket-Solderless-Firmware-Flashing-Programming-Tool/183233653678
https://hobbyking.com/en_us/atmel-atmega-socket-firmware-flashing-tool.html
https://www.amazon.com/Atmel-Atmega-Socket-Firmware-Flashing/dp/B00V2W467I
You also need a USBASP programmer (about $2) from eBay or elsewhere to use this.

I always buy 5 motors and 5 ESCs at a time in case I fry one (unless I already have spares).  That guarantees that I have a match if I need one.

BLHeli_S is a version of BLHeli that supports some of the new advanced ESC signal protocols.  I don't have any ESCs that use it.
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Vehicles - MultiRotors / Re: ESC will not initialize unless Revo is USB powered
« Last post by avu2 on June 19, 2018, 05:25:43 pm »
All sensors are GREEN in GCS and arming is indeed manual with the RC. GCS says and shows ARMED when done, status WS281x LED is blue, but motors will not spin due to incorrect ESC initialization at power up. This quad was flying with 16.09 before adding the external magnetometer. I tried 16.09+r711 but import 16.09 UAV settings is not straightforward, you must reconfigure a lot, so got back to 16.09 until this is settled. Thank you for the advice.
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