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Sep 12, 2018, 12:05 PM
Time For Me To Fly!
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Build Log

Skystars S225/STX225 5S Capable 5 Inch Kit Build/Review


EDIT 8/8/2019 Available here for $133 with free priority shipping.

Flight Controller PDF Manual/Pin Out Thanks to member GCRC

The new Skystars S225/STX225 DIY Kit is now available. Looks to me like it is going to be an excellent value in the 5 inch FPV racer category. Specs look really good, and I am liking that we are seeing more and more of these quads available in kit form.

My kit arrived a couple days ago, and I finally got a chance to snap a few pics. Hoping to get started on the build this afternoon, and will post more pics as I make progress.

EDIT-10/2/2018

Build is complete. Added a bunch more pics below. Please don't hesitate to ask any questions, or request pics of something I missed. Flight video coming soon.

EDIT-10/3/2018

Managed a quick test flight today. Flies very smooth, and has a lot more punch, and speed than I was expecting, especially on 5042 high efficiency props. Should be really impressive on some 5152 props. Flight video coming shortly.

EDIT-11-13-2018 Spares are now showing up at Gearbest

Frames are available here for $21.44

Motors are available here for $8.24 each

ESC's are available here for $6.99

I will update if/when more show up.

EDIT-11/26/2018 Printed a shark fin for my Skystars STX225. Thing file here. Requires a quick easy mod to install. Front of the plate lines up perfectly, so install it with the stock screws and then you will see where to trim and drill the screw holes for the rear. See image below.

EDIT-11/28/2018 Got some new props to try out as soon as the weather permits. They're EyeSky 5053 and I hope they perform as good as they look. See image below. Flight video hopefully in the next couple days.

EDIT-12/6/2018 Here is a link to some 3D printable landing gear designed for this quad. Special thanks to adis1313. If anyone here would like a set of this landing gear that doesn't have access to a 3D printer PM me, or post here and I will print you a set for actual cost.

First flight video

SkyStars S225/STX225 5 Inch FPV Racing Drone Kit First Flight WOW! ONLY $99 (3 min 13 sec)


EDIT-12/18/2018

Test flight running EyeSky 5053 Props. Good news. Motors were cool to the touch after a 3:30 flight.

SkyStars STX225 5 Inch Kit EyeSky 5053 Prop Test (4 min 1 sec)


Specs from the Gearbest product page.

Frame Kit Specifications:
● Wheel base: 225mm
● Frame arm thickness: 4mm
● Bottom plate thickness: 2mm
● Side plate thickness: 2mm
Motor Specifications:
● Motor KV: 2300
● Idle current: 1.26A
● Lipo cell: 3 - 5S
● Max continuous current: 25A
● Max continuous power: 240W
● Configuration: 12N/14P
● Motor resistance ( RM ): 0.0572 ohm
● Stator diameter: 22mm
● Stator thickness: 4mm
● Motor diameter: 27.88mm
● Motor body length: 20mm
● Overall shaft length: 34.2mm
ESC Specifications:
● Continuous current: 35A
● Peak current: 40A ( 10S )
● Input voltage: 2 - 5S
● BEC: no
● Main control chip: STM32F051
● Firmware: BLHeli - 32 supports 500HZ PWM, Oneshot125, Oneshot42, Multishot, Dshot150 / 300 / 600 / 1200
Flight Controller Specifications:
● Sensor: MPU6000
● Power supply: 5V
● Integrated OSD
Camera Specifications:
● Total pixels: PAL: 1020H 596V ( 0.61MP ); NTSC: 1020H 508V ( 0.52MP )
● Effective pixels: PAL: 976H 582V ( 0.57MP ); NTSC: 976H 494V ( 0.48MP )
● Signal system: PAL / NTSC switchable
● Resolution ratio: 1200TVL
● Automatic gain control: yes
● White balance: on / off optional
● Exposure mode: electron exposure
● Electronic shutter: 1/50 ( 1/60 ) - 1/100000S
● Camera lens: standard 2.3mm
● Lens operating voltage: DC 12V
● Working current: 70mA ( low power consumption )
● Working temperature: - 20 Deg.C - -60 Deg.C
● Humidity: 0 percent - 98 percent
Transmitter Specifications:
● Frequency band: A - E ( 8 channels in each band )
● Transmitting power: 600mW
● Full video format: NTSC / PAL
● Input voltage: 7V - 24V
● Transmission distance: more than 0.5km ( 25mW ), more than 1km ( 200mW ), more than 2km ( 600mW )
● With output power self-check function
● Antenna connector: MMCX
Propeller Specifications:
● Quantity: 2 pairs
Battery:
● 3 - 4S 1300 - 1500mAh LiPo ( not included )
Last edited by fastmax; Aug 08, 2019 at 09:49 AM.
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Sep 12, 2018, 12:05 PM
Time For Me To Fly!
fastmax's Avatar
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Reserved
Sep 20, 2018, 10:50 AM
Time For Me To Fly!
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Now available for $99 again. Just use coupon code GBSTX225 at checkout.
Sep 21, 2018, 05:43 AM
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SoloProFan's Avatar
You got one coming, I presume?
Latest blog entry: For the love of the hobby!
Sep 21, 2018, 06:25 AM
Registered User
Merch's Avatar
Have fun building it
Sep 21, 2018, 07:11 AM
Time For Me To Fly!
fastmax's Avatar
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Quote:
Originally Posted by SoloProFan
You got one coming, I presume?
Yes indeed, but hard telling when it will arrive with all the crazy weather that's been happening all over the place.

Quote:
Originally Posted by Merch
Have fun building it
Thanks Merch! Should definitely be a fun build.
Sep 22, 2018, 01:08 AM
Fan of just about anything RC
SoloProFan's Avatar
Mine shipped today.
Latest blog entry: For the love of the hobby!
Sep 22, 2018, 01:29 AM
Time For Me To Fly!
fastmax's Avatar
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Quote:
Originally Posted by SoloProFan
Mine shipped today.
Mine shipped yesterday, so... The race is on!! I imagine you'll have yours a full week before me, but it will be fun to see how it plays out. Glad you have one on the way. It will be interesting to see if we share similar opinions once we both start the build.
Oct 01, 2018, 12:51 PM
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Kit has arrived. First post updated with a few pics. Also the kit is now on flash sale for only $89
Last edited by fastmax; Oct 01, 2018 at 01:20 PM.
Oct 02, 2018, 07:48 AM
Time For Me To Fly!
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Making some progress with the build.
Oct 02, 2018, 12:23 PM
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Ready for its maiden flight. Indoor test hover went well. Now it just needs to stop raining.
Oct 03, 2018, 05:55 PM
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Managed a quick test flight. Really impressed considering it's running 2204 motors, and 5042 props. Way faster, than I was expecting. Should really move out on some 5152 props. Video coming shortly.
Oct 04, 2018, 01:38 PM
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First flight video added above.
Oct 05, 2018, 10:21 AM
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Added some large images of the FC to the first post. Makes identifying the necessary connections easier for anyone that's doing this build.
Oct 08, 2018, 02:51 PM
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Ready to rock with some 5152 Whisky props


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