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Messages - alexa

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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
 

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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.

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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

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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

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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


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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.

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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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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 29, 2018, 02:12:16 PM »
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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 29, 2018, 02:10:45 PM »
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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 29, 2018, 02:09:44 PM »
more

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Mavic Build Diaries / Re: Mavic F3 4.1 with mods
« on: September 29, 2018, 02:08:29 PM »
more images

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Mavic Build Diaries / Mavic F3 4.1 with mods
« on: September 29, 2018, 02:06:27 PM »
Hello,

first i want to thank CDR for his amazing work.
I found the site after i watched a video at youtube and i decided to give it a try.
I already had a SPF3 and a 4in1 ESC 20A so the obvious choice was the F3 based model.
As i was trying to figure out how to have them placed i decided to start modifying the pieces.
First i split-ed the base at 2 parts to have easier access and created a second place with standoffs for the ESC.
In the process of assembling everything i found other pieces that i also needed to modify.
The model is now assembled but i still wait for a receiver and a GPS.
When the receiver comes it will be the moment of truth to see if the model flies.

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