So I have just tested the Brushed EVO F3 on the Whoopee Frame, with the Eachine 3.7V 500mAh 25C Batteries.
My setup:

• Brushed EVO F3
  
• SRP8 RXd
  
• FX797 VTX/Camera Combo
  
• Whoopee Frame
  
• MMW Dark Edition 8.5mm motors
  
• Lady Bird props
  

It flies great, only problem so far I have found is the 5V! 





Some close up picture of the EVO F3 I received.





5V Not Great, but flies well

Initially I was powering VTX and RX with 5V (I run the same on the Lulfro board without any problems)

But the voltage fluctuates quite a bit, when LiPo voltage level is low, and if I do a punch out, the RX loses power and it just goes crazy and full throttle randomly. My theory is that the 5V regulator just cannot keep up and it just drops with lipo voltage, while the RX input voltage tolerance is crap so it just shuts down when it's below 5V.

So, I have to power the FX797 from the main LiPo. It's not a problem at all as this VTX has excellent power filtering, it's not affected by motor noise. Issue is gone. 
Don't rely on this board's 5V! Especially if you are running a RX on the 5V, I wouldn't recommend powering anything else with it.

They have also added a capacitor at the battery input, which wasn't there when the pictures were released.





Cleanflight Settings

It's flashed with latest Cleanflight firmware v1.13 (not betaflight), but PID settings was way too high, and some necessary settings for brushed quad are not set properly such as Motor_PWM.

My recommendation is to factory reset the board, and go through each necessary setting again.

This is my settings
set motor_pwm_rate = 32000
set min_throttle = 1000
set max_throttle = 2000
set min_command = 1000
set acc_cut_hz = 25
set deadband = 4
set yaw_deadband = 4
set dterm_cut_hz = 40

Battery Voltage Alarm

There is a buzzer pin on the board, so you can hook up a buzzer for voltage alarm and lost model.
But I also found the blue LED blinks when voltage is low (if you enabled the feature in Cleanflight). 

What's even better is, the blue LED light reflects on the Whoopee frame, and the light happens to be visible to my FPV camera. Which means I can see the blue blinking when voltage is low when I am flying FPV. Awesome!  

Eachine 1S 500mAh 25C Battery

At the same time I also received these LiPo. Tested 2 packs of these. Comparing to the Blue 380mah, They feel to have more punch, but somehow I got about 10% less hover time (hover test, absolutely just hovering). Both are from Banggood.

Eachine 500mah - weights 13.4g - http://www.banggood.com/5X-Eachine-3_7V-...93949.html
Blue 380mah - weights 12.5g - http://www.banggood.com/Upgraded-25C-3_7...69870.html

Maybe try reserve-powering the Rx with a capacitor?

Hello,
I have a nearly identical setup to yours, (even bought the frame from you ^^) with the exception of a dsm2 spektrum sat as the rx. I am experiencing the same power loss on the 3.3V side - do you think anything can be done about it?

Do you have other 3.3V devices connected to the voltage rail?
does your RX support voltage directly from lipo?

Nope, only thing i have is the Satellite connected and the VTX/camera which is connected directly to the battery.
I don't think the spektrum sats like voltages above 3.3V, i'm afraid to fry it.

(25-Aug-2016, 05:11 PM)Darkstar November Wrote: Nope, only thing i have is the Satellite connected and the VTX/camera which is connected directly to the battery.
I don't think the spektrum sats like voltages above 3.3V, i'm afraid to fry it.

not sure what to suggest, I think it's just a bad 3.3V regulator on board... 3 things i think you can try:
1. try to put a capacitor on the 3.3V/GND
2. replace with a better 3.3V voltage regulator
3. add a 3.3V voltage regulator dedicated for the RX

Makes sense, i'll look around for a cap to try to solder to it, any value in particular? 3.3V regulators are kinda hard to find here in my area sadly.. i'll try swapping to the frsky module you are using instead when it arrives.. hopefully it works better.

I flashed the naze firmwaare on the board by accident. Is there bootpins on this board? How would I be able to recover this board?

Thanks.

(27-Aug-2016, 09:39 PM)profab1 Wrote: I flashed the naze firmwaare on the board by accident. Is there bootpins on this board? How would I be able to recover this board?

Thanks.

Do you see "Boot" label on the front of the board? I guess that's the bootloader pins.

(27-Aug-2016, 10:19 PM)Oscar Wrote: Do you see "Boot" label on the front of the board? I guess that's the bootloader pins.

Yes, thanks I got it flashed with the right firmware now.

Hi anyone knows a dsmx only micro rx to pair at this fc? My tx is dsmx only ue version.
Thanks

---

I mean something smaller than a spektrum sat

(06-Sep-2016, 12:51 PM)lorentz Wrote: Hi anyone knows a dsmx only micro rx to pair at this fc? My tx  is dsmx only ue version.
Thanks

---

I mean something smaller than a spektrum sat

You could probably get light enough by taking the case off of a lemon-rx dsmx satellite. (Oops, didn't see your addendum till I posted.)

(06-Sep-2016, 12:51 PM)lorentz Wrote: Hi anyone knows a dsmx only micro rx to pair at this fc? My tx  is dsmx only ue version.
Thanks

---

I mean something smaller than a spektrum sat

I think it would be easier if you just use the Micro Scisky
to be honest i don't see any flight performance difference between f1 and f3 FC for my brushed quads and you don't need that many UART anyway.

Sadly but my tx is a post 2015 eu conpliant so it outputs only dsmx.so it will not bind dsm2 micro scisky fc...

The frame looks amazing , I wish if you make a copy fits 32*32 boards like beef