Author Topic: Parts suggestion  (Read 5435 times)

Offline STiXzoOR

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Parts suggestion
« on: January 09, 2018, 09:55:50 AM »
hi, i recently found out about this forum through thingiverse when i was looking to build my very first 3d printed drone and i got to say this mavic clone thing hooked me up but i have a dilemma. I don't know what are the necessary parts i should buy and which since there so many out there. Do you guys have any good suggestion or something? Thanks.

Offline iRazoR

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Re: Parts suggestion
« Reply #1 on: January 09, 2018, 11:53:13 AM »
- David

Offline STiXzoOR

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Re: Parts suggestion
« Reply #2 on: January 11, 2018, 06:14:06 PM »
@iRazoR

yeah i read that but most of them are outdated or discontinued. I saw your partlist in your diary build and i think i'm gonna buy them since i found them all and in good price. Is there anything i should know before i buy them?

Offline iRazoR

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Re: Parts suggestion
« Reply #3 on: January 11, 2018, 07:06:10 PM »
Yeah you are right, the partlist is a bit outdated.

In the end it depends on your knowledge and what you want to achieve.
Im quite happy with the SP Racing F3 FC but there are others who prefer the DJI NAZA FC.
If I would start over again I would probably look for a all-in-one Flight Controller with Video TX and so on because space is very limited. Also some more UART Ports would be helpful.

For the ESCs you have to choose if you go with the 4-in-1 Solution which I used or with ESCs in the arms.
Motors are your free choice.
GPS definetly one with Ublox M8N Chip.

The rest I think you can take from the original Parts list
- David

Offline KDan

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Re: Parts suggestion
« Reply #4 on: January 14, 2018, 08:02:56 PM »
When I first found this board I was also looking for an official parts list. I quickly discovered there isn't one. When you start building with the parts you choose, you'll likely find that making changes to the design to accommodate them is very useful. The STL files are not easily edited in most CAD software. You can move flat surfaces and poke holes in things, etc, but when it comes to making changes to more complicated geometry you'll probably want to download the IGS design files from the download section.

I would say, right from the outset, you should decide which capabilities do you want your Mavic clone to have. Will it strictly be a line-of-sight flyer, or will you want to do FPV? Do you want to be able to fly autonomous missions? Do you want a gimbal for smooth video recordings? Do you want Sonar? Or maybe something even more sophisticated, such as like optical flow like the real Mavic has. Do you want telemetry on the OSD of your video FPV video overlay, or perhaps you prefer telemetry on your radio transmitter (assuming you own a telemetry capable radio like the Taranis). Or perhaps, you want telemetry and drone position displayed on a map on your smart phone/tablet. Do you want to be able to control the gimbal from your radio transmitter? And, do you want to be able to control the video recording/picture taking from the transmitter as well? There are many possibilities, and you might not be able to have all of them due to space and hardware limitations.
-Greg

Offline STiXzoOR

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Re: Parts suggestion
« Reply #5 on: January 14, 2018, 08:32:55 PM »
@iRazor,

Thanks for the info it is really helpful. I will go for 4 in 1 esc since most of them are PDB too and have BEC. Also i found some all in one FC but most of are either in tower style(which i guess will take some height and mayne not fit) or don't have what i require(vtx and esc mostly but also support gps with compass). In general i'm into aerial photography so.

@KDan,

Wow those were some seriously things i should concider before building it. Well it's my first ever build and that's why i started this thread so i can get an idea of what you guys are using. I need it mostly fot aerial photography so FPV is a must and controlling video/photo from my iPhone is what i want but i don't know if it's possible(i read about the Dronebridge though which it's promising). Gimbal is something i really want and i've been followimg your posts about designing one and that's what i'm waiting and hope you succeed. So yeah pretty much i need most, if not all, of the aerial photography possibilities that are available in hardware and software section and can fit them in mavic clone.

Offline KDan

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Re: Parts suggestion
« Reply #6 on: January 15, 2018, 02:28:27 AM »
I think my gimbal design is pretty much done for now - at least until the drone is flying. I think David has pretty much finished his too and I know he is on the verge of flying and maybe getting some video footage with his.  8)
I spent most of the day working on a prop adapter design that will allow me to use the quick connect Mavic folding props on my 2208 1100kv motors. I was hesitant at first to try to use printed parts in such a critical spot, but I actually think they are going to work well and be strong enough. One more problem solved.  ;) Working on modifications to the main body now in order to get the video transmitter antenna connector exactly where I want it. Burning through lots of filament  ;D
-Greg

Offline STiXzoOR

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Re: Parts suggestion
« Reply #7 on: January 15, 2018, 04:58:38 PM »
hehe nice to hear that man good job keep it going. I'm looking forward to see what you will come up to. Will you share your stl files including the gimbal when you finish them? Also would you mind sharing your current parts list? Thanks. In the meantime here's mine, at least for now:

Remote Controller Option #1: Turnigy 9X 9Ch Transmitter
https://hobbyking.com/en_us/turnigy-9x-9ch-transmitter-w-module-ia8-receiver-mode-2-afdhs-2a-system.html

Remote Controller Option #2: Flysky FS-i6X
https://www.aliexpress.com/item/Flysky-FS-i6X-2-4GHz-6CH-AFHDS-2A-RC-Transmitter-with-FS-iA6B-Receiver-FS-I6X/32840184468.html

Flight Controller: Deluxe F3 Flight Controller with Built-in OSD
https://hobbyking.com/en_us/seriously-pro-racing-f3-fc-board-deluxe-with-internal-osd.html

Motors: EMAX 2212 MT2213 935KV Brushless Motor
https://www.aliexpress.com/item/Freeship-4set-lot-EMAX-2212-MT2213-935KV-Brushless-Motor-for-DJI-F450-F550-X525-Multicopter-Quadcopter/32430945790.html

ESC Option #1: iPeaka 35A DShot 4 IN 1 BLHELI_S
https://www.aliexpress.com/item/iPeaka-35A-DShot-4-IN-1-BLHELI-S-MULTISHOT-Built-in5V-12V-BEC-ESC-compatible-2205/32818460044.html

ESC Option #2: Hobbywing 4 IN 1 ESC XRotor Micro 40A
https://www.aliexpress.com/item/Original-Hbbywing-4-IN-1-ESC-XRotor-40A-Speed-Controller-Build-in-BEC-ESC-BLHeli-S/32820389545.html

ESC Option #3: Hobbywing XRotor 4 IN 1 Micro 3-4S Build-in BEC 20A
https://www.aliexpress.com/item/Hobbywing-XRotor-4-IN-1-Micro-3-4S-Build-in-BEC-20A-ESC-Support-oneshot125-for/32729449114.html

Battery: Limskey Drone 3S 11.1v 3000mah Lipo Battery 30c
https://www.aliexpress.com/item/Limskey-power-3S-11-1v-3000mah-Lipo-Battery-30c-For-Helicopter-Four-axis-RC-Car-Boat/32756544259.html

Props: 8331 Low-Noise Quick-Release Propellers For DJI Mavic Pro
https://www.banggood.com/1-Pairs-8331-Low-Noise-Quick-Release-Propellers-For-DJI-Mavic-Pro-Platinum-Gold-p-1218755.html?rmmds=cart_middle_products&cur_warehouse=CN

VTX: Eachine VTX03 Super Mini
https://www.aliexpress.com/item/Eachine-VTX03-Super-Mini-5-8G-72CH-0-25mW-50mw-200mW-Switchable-FPV-Transmitter/32783340891.html

VTX Antenna:: 433Mhz 6dbi high gain LoRa antenna
https://www.aliexpress.com/item/433Mhz-6dbi-high-gain-LoRa-antenna-internal-aerial-piamater-FPC-27-17mm-IPEX-connector/32824569486.html

GPS: Mini Ublox M8N GPS
https://www.aliexpress.com/item/2016-New-Arrival-Mini-Ublox-M8N-GPS-for-APM-Pixhawk-PX4-CC3D-Naze32-SP-Racing-F3/32646622351.html

Sonar: New Ultrasonic Module HC-SR04
https://www.aliexpress.com/item/New-Ultrasonic-Module-HC-SR04-Distance-Measuring-Transducer-Sensor-for-for-Ar/1859102668.html

Offline KDan

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Re: Parts suggestion
« Reply #8 on: January 15, 2018, 06:47:39 PM »
VTX antenna you linked to is incompatible with the VTX you listed. The VTX already has an antenna, but they whole thing is only good for short range. I'd suggest a completely different VTX with an RP SMA connector so you can use a good antenna.
Also, the props you want to use (the one's everyone wants to use - the Mavic Platinum props) are not ideal for use with that motor on 3S power. You want slightly larger props or a slightly higher motor kv. The Mavic Platinum props have a quick release base with a hole for a smooth 3mm central shaft. The motors have an M5 thread and won't fit those props in any case.
Props and motor selection took me awhile.

I used a different GPS, but others have used that one with good success. Most of the other stuff seems OK. 
-Greg

Offline STiXzoOR

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Re: Parts suggestion
« Reply #9 on: January 15, 2018, 07:07:31 PM »
Oh really? It's because of the mhz i guess, right? Since the connector is the same. Well i was thing to buy one with RP SMA connector but i don't want anything to be sticking out of the mavic like a horn and the space also is an issue as far as i read in this forum. Oh well i really wanted to use those props to get that mavic feeling a little bit more. Anyway i can use them? Maybe other motors? Or an attachment like the one you designing? What motors do you use?

Offline KDan

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Re: Parts suggestion
« Reply #10 on: January 15, 2018, 08:00:03 PM »
Yes, the antenna is for 433 MHz. The video Tx is 5.4 GHz.
I did find another solution for removable folding props that threads onto a M5 motor shaft, but I wanted the option to use the Mavic Platinum props also - that's why I decided to create an adapter. Other than a genuine DJI motor, I'm not aware of any suitable motors with the DJI quick connect.

I have two different types of motors that I bought. The first is similar to the ones you linked to (with the M5 thread). I bought these screw on folding prop adapters. You have to be careful with these though because they spread out the props a bit (giving you a larger diameter prop) and the tips may hit each other.
The second set of motors I bought are from RTFQ and cost $59 USD for a set of 4. They are the ones I'm working on the adapter for.
There are definitely other (perhaps better) options. Just pay attention to the prop mounting and the Kv of the motor. If you want to run 9" props, then the 935kv motor will probably work fine.
-Greg

Offline KDan

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Re: Parts suggestion
« Reply #11 on: January 16, 2018, 01:43:43 PM »
VTX antenna you linked to is incompatible with the VTX you listed. The VTX already has an antenna, but they whole thing is only good for short range. I'd suggest a completely different VTX with an RP SMA connector so you can use a good antenna.

After reading my original comment about this VTx, I realized that it's not really accurate. It's not really a problem with range with the antenna that comes on that transmitter, it's the fact that it is not circularly polarized. That means it will be much more subject to multipath interference why flying low around trees and buildings, etc. That's the way I fly most of my smaller quads. If you are flying out in the open away from obstructions, that Vtx and the included antenna should work fine and have just as much range as a transmitter with a circularly polarized antenna of the same power output.
-Greg

Offline STiXzoOR

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Re: Parts suggestion
« Reply #12 on: January 16, 2018, 02:02:19 PM »
hmm well since i will be doing some kind of aerial photography i guess it's fine. The holder you bought from ebay i think will help a lot and will give me that little extra diameter size to use the platinum props, right? Also the adapter you are designing, is for the old mavic props or for the platinum(the ones i want to use)? and is it specific for your motors or it should work on other motors with the same shaft diameter? Sorry for asking so many question, i just need to be sure before buying anything ;-)

Offline KDan

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Re: Parts suggestion
« Reply #13 on: January 17, 2018, 12:47:12 PM »
hmm well since i will be doing some kind of aerial photography i guess it's fine. The holder you bought from ebay i think will help a lot and will give me that little extra diameter size to use the platinum props, right? Also the adapter you are designing, is for the old mavic props or for the platinum(the ones i want to use)? and is it specific for your motors or it should work on other motors with the same shaft diameter? Sorry for asking so many question, i just need to be sure before buying anything ;-)

The quick release adapter I made is for either type of Mavic prop - they mount the same. It is specific to the bolt pattern of the motors I'm using, but other motors may use the same pattern... IIRC, the screws are M2 on a 9mm circle. I could probably adapt it to other bolt circles if they are close in size.
The folding prop hub I got on eBay is a simpler solution and allows the use of any motor with a M5 CW/CCW thread prop mount. The spacing of the prop mounting holes is much wider than the original Mavic prop hub (see photo below), and it basically makes the props bigger. That's not a bad thing if the prop tips don't hit each other. Based upon my trial fitting, they won't. It you want to use Mavic prop blades on this hub, you have to remove the blades from the original hub an then fit them to the the new hub. Mine came with spacers that allow the props to fit fairly well.
@iRazoR was able to find some similar M5 folding prop hubs with narrower mounting holes. I wasn't able to find any...
« Last Edit: January 17, 2018, 12:56:25 PM by KDan »
-Greg

Offline STiXzoOR

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Re: Parts suggestion
« Reply #14 on: January 17, 2018, 01:34:04 PM »
hmm thanks for the info ma. Would you mind sharing your adapter if you finished it?(in case i buy the same motors as you have) thanks