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X-Racer F303 Board, LEDs in Cleanflight
#1
Hey All, 

Has anyone been able to get LED strips to work with the X-Racer F303 using cleanflight? I have tried using RC 5 and RC 7 to send signal to the LEDs but I have had no luck. Occasionally it will light up, but it will not be the color I specified, or react to something like throttle. Any help would be greatly appreciated. 

Best, 

Ryan
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#2
Hi Ryan, it appears that Xracer F3 doesn't support RGB LED nor VBAT out of the box...
You might be able to work around with hacks...
hope they can fix that in next version...

Update (22/03/2016): V2 is out! http://intofpv.com/t-xracer-f303-fc-v2-new-version
Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
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#3
(29-Jan-2016, 06:57 PM)Oscar Wrote: Hi Ryan, it appears that Xracer F3 doesn't support RGB LED nor VBAT out of the box...
You might be able to work around with hacks...
hope they can fix that in next version...

Thanks Oscar. I appreciate the help.
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#4
i have got a spracingf3 board and i found the pin on the f3 chip where the ledstrip is connected.
The spracing f303 doesn't have any connection to that pin.

i will try to solder directly to that pin on the f3 chip (like the vbat mod) and report back the results
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#5
Any news about a led hack/mod?

BTW, i'm new to this forum and building my first Quad (x-racer, littlebee 20a, 2204 1960kv cobras)

Greetings from germany Smile
My quad: 
RD-210 / ZMX V3 2206 2140kv / Aikon SEFM 30A / X-Racer F303 V3 / X4R-SB / Dronelab 1500 4S 50C
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#6
(05-Mar-2016, 12:53 AM)Luc Wrote: Any news about a led hack/mod?

BTW, i'm new to this forum and building my first Quad (x-racer, littlebee 20a, 2204 1960kv cobras)

Greetings from germany Smile

Hi Luc..

I don't think you should get your hopes up with this one hehe Big Grin
probably won't happen! soldering to the processor is too risky really!
Don't be a LOS'er, be an FPV'er :)  My Gear - Facebook - Instagram - Twitter
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#7
Thanks for your help Oscar. Soldering isn't a problem Wink
I just need to know the right pin of the processor and i'm ready to go..
My quad: 
RD-210 / ZMX V3 2206 2140kv / Aikon SEFM 30A / X-Racer F303 V3 / X4R-SB / Dronelab 1500 4S 50C
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#8
Hi,
Just did the VBAT and LED_STRIP mods on one X-racer F303. Works fine, not sure the mod is flight worthy even though I secured most of the add-ons with some small CA-drops... Liquid tape all over it would probably help.
I also added a 5V regulator and soldered a beeper directly to the Fc. Mounting holes are not at the std 30.5mm spacing, had to adjust them slightly, now they are bit oval. Had to order a Spektrum satellite connector separately and solder in. Quite a lot things missing in the basic design and a lot of work to get it where I want it.

Checkout it out:
   

More pictures here (too large for this forum):
https://dl.dropboxusercontent.com/u/1108...C_0433.JPG
[Image: ymsSii9l.jpg]
https://dl.dropboxusercontent.com/u/1108...C_0435.JPG
[Image: OeiSSDAl.jpg]
https://dl.dropboxusercontent.com/u/1108...0Stuff.jpg
[Image: 3tRxX5yl.jpg]
/A
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#9
AndWho, that's great! Thanks for sharing your knowledge. You pretty much get rid of all the annoying things of this FC.
I probably won't recommend buying this FC with all its design flaws.
My quad: 
RD-210 / ZMX V3 2206 2140kv / Aikon SEFM 30A / X-Racer F303 V3 / X4R-SB / Dronelab 1500 4S 50C
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#10
Thnx.
Lets wait and see if there is a V2 coming. If they fix at least some of the flaws, it would be close to perfect.

The Led strip feature would really benefit with some more work. WS2812 strips are not fully compatible with the 3.3V logic levels of the STM32 outputs. There should be a 5V TTL driver in between. This not specific to X-racer, it is a general problem. It is covered in the cleanflight docs and the usual fix is to lower the strip supply voltage with a diode in series. Ugly, but it works.
/A
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#11
Those WS2812 strips are working with 4-7V right? So a diode in series to 5V means 4,3V for the LEDs, so logic levels are more compatible?
My quad: 
RD-210 / ZMX V3 2206 2140kv / Aikon SEFM 30A / X-Racer F303 V3 / X4R-SB / Dronelab 1500 4S 50C
Reply
#12
(07-Mar-2016, 11:27 PM)Luc Wrote: Those WS2812 strips are working with 4-7V right? So a diode in series to 5V means 4,3V for the LEDs, so logic levels are more compatible?

Yepp, correct.
/A
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#13
Nice work, AndWho!  Mad solder skills, especially with large wire like that.  I cheat and use pieces of pin connectors, LED legs, solid wire, kanthal... shrink wrap, liquid tape, glue.

I have one I just put on a 250 and have only run a couple batts around the house.  No tuning yet but I really liked the feel of it.  Acro and Horizon worked well.

I certainly agree about V 2.x  Lets fix some bugs and do it again.  I don't expect a full 10 dof board, but I do want awsome race FC that will run a few accessories if I choose.  Gotta have Vbatt, Buzzer(that the freakin' pads don't rip right off of) LED, OSD, Telem.

It's got a few flaws, but I think it has great potential.

Keep up the great work!  I would like to know more about the mods you did...
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#14
(08-Mar-2016, 02:09 AM)CrashWorks Wrote: ....  I would like to know more about the mods you did...
Thnx.
What would you like to know more on? Not much more to tell really...
Other than than the LED-strips are hungry, a small linear voltage regulator might be overloaded and shutdown after a while. You might need separate power supply for the LED-strip. But this is general for all LED-strip use, nothing particular for my mods.
/A
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#15
(08-Mar-2016, 12:07 PM)AndWho Wrote: Thnx.
What would you like to know more on? Not much more to tell really...
Other than than the LED-strips are hungry, a small linear voltage regulator might be overloaded and shutdown after a while. You might need separate power supply for the LED-strip. But this is general for all LED-strip use, nothing particular for my mods.
/A

Just checking voltage on the Vbatt mod... OK for 3s and/or 4s input?

The LEDs are another issue.  Am i correct in assuming that pin29(PA8) on the processor puts out data at 3.3v and the LED strip (WS2812) works on a data input of around 5v, kinda like sonar?  In that case, a couple of diodes and a 10k resistor should couple data and both get the voltage they like while sharing the same 5v power supply...

Thanks for your help, I love to build... but this damn programming thing...

Im working on feasability study for the Xracer project, looking at mods, size and weight...  I hope to come up with a "bulletproof" FC

Blue Skies, Brother
-kenny
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