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Messages - alexa

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1
Mavic Build Diaries / Re: Mavic Build from Serbia
« on: January 30, 2019, 12:40:18 PM »
This is the FC that I have

I do not understand too much about this, so I need help.

You can check this page and see what version is your F4
https://www.dronetrest.com/t/how-to-identify-what-omnibus-f4-board-you-have/4735

I bought a similar with yours, if its exactly as the schema shows, and is F4 V3 not a Pro.



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Mavic Build Diaries / Re: Mavic Build from Serbia
« on: January 28, 2019, 01:26:48 PM »
Hi, depends on what GPS you will use.
I bought a round one and used only the PCB which happens to be rectangular.
The stl file is attached for you to check it.

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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: January 19, 2019, 05:49:14 PM »
Printed supports

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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: January 19, 2019, 03:24:19 PM »
BTW, a month ago i had a crash.
One of the front feet was broken.
But the actual problem was with the base at the point of the screw that holds the rear feet.
The strength of the hit was there and as the weak point is there the base broke.
I designed a support under the rear feet to split such hit to bigger area and i hope will hold better.
And also extra feet that will be screwed at the front of bottom

5
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: January 19, 2019, 03:15:07 PM »
Hey Alexa, could you possibly upload your modified components? I am planning on building one fairly similar spec wise as your build. I would really appreciate that.

Hi, here are the stl files i used for mine.

6
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: November 07, 2018, 03:18:50 PM »
I found some time and space to test the bird.
It hovers nicely, but only with Horizon mode in iNav as i found i have COG problem depending the batteries used.
With a 115mm long 3S 2600mah there was serious forward leaning in ACRO mode and i couldn't get it off the ground at all.
Enabling the Horizon mode though it hovered like a charm.
I also tested with 2 x 1000mah 3S Nanotechs connected in parallel that were placed in the back of the battery space.
The COG problem was very light, almost gone.
Again with Horizon mode was perfect.

I couldn't keep it in the air more than 5 minutes cause all the batteries are very old and do not keep much juice.
Actually i had them stored in my refrigerator for around 5 years !!!
They survived but they cannot hold anymore in such demanding usage.

I wait for a couple new 3S 3000mah batteries.
With the changes i have done to the body they will fit if the declared sizes are correct but i have to solve the COG problem somehow.

For now the total weight with the 2600mah battery is 850 grams
 

7
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: October 29, 2018, 02:28:11 PM »
Hi Steve,

unfortunately not yet cause of short time, but most probably in the weekend i will have the opportunity to face the truth :) as i will travel to my home place where i can have open area.

8
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: October 04, 2018, 11:28:14 PM »
Also BLHeli configurator runs through this virtual serial port

9
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: October 04, 2018, 11:18:11 PM »
D1 Mini is connected to UART3 as its pins are 3.3V

10
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: October 04, 2018, 11:17:08 PM »
Finally I managed to embed an ESP8266 D1 Mini and running the configurator remotely via a Wifi virtual serial port


11
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: October 03, 2018, 07:35:55 PM »
Hi, for now i have some existing 3S and 2S that i am testing on the desk. The electronics can use 2S,3S or 4S.
The modified extended back top is for a 3s 2600mah that i had available.
The setup as it is now can fit batteries with dimensions 105(L)x35(H)x25(W), maybe a length till 110mm but will be pain to close/open it or handle the cables.

12
Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 30, 2018, 11:20:58 AM »
Nice work !  Looking forward to seeing your flight videos. 👍

Thanks, i am eager to have the receiver delivered and test it.
The serious modifications i did are only at Z axis besides some to make things easier like a little bigger holes for the motor screws so the screw head can go inside the legs, a hole at the front of the base to easier be able and hook the USB cable at the F3.
I was thinking to use a magnetic USB cable but the little head has magnet and may interfere.
The F3 is the ACRO version and i will have a compass at the front top together with the GPS that may be affected from the little USB head or maybe the distance is enough, will test it.
Another idea i am working on is to install an ESP8266 to UART1 as passthrough to be able to access the FC over WIFI.
Anyway the flight test is the most serious for now.
 

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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 29, 2018, 02:16:49 PM »
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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 29, 2018, 02:16:04 PM »
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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 29, 2018, 02:13:45 PM »
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