Just a quick heads up for those of you that use the GN745 like I do.  The newer "v1.2" has a different pinout.  On the M4 side of the whoop board, there are far fewer pads.  I've installed so many of these GN745s I have the pinout memorized so I didn't bother to check.  Hopefully I didn't fry anything as none of my components would light up lol.  That's when I realized there were fewer pads on the FC than there were in the PDF manual I'd kept for the v1.

Here is the new v1.2 pinout:



In contrast to the old v1 pinout:

Holy crap I just noticed they went from $69.99 to $99.99!!! Lame.

Thats steep.

Interesting, thanks for the heads up! Looks like they got rid of the M5-M8 pads and shifted things around. No idea why unless there were reliability problems with how they had the PCB routed before. Same firmware target so they didn't change any pin assignments...

No joke, evidently Bardwell's video of him complaining the pads were too small is something Flywoo felt necessary to address.

(13-Nov-2021, 04:56 PM)V-22 Wrote: Interesting, thanks for the heads up! Looks like they got rid of the M5-M8 pads and shifted things around. No idea why unless there were reliability problems with how they had the PCB routed before. Same firmware target so they didn't change any pin assignments...

I was playing around with this exact board (the 1.2 version, which still comes with a 1.0 manual), just realized the pinout has changed, and came right here - my first message, very new to FPV drones 

I was actually very much planning on using said M5-8 pads, is it still possible with the 1.2 upgrade?
Checked the board's resources, looks like pins are still present, however I do not understand where they are actually located..


  1. Where are motor M5,M6,M7,M8 pads on GN745AIO v1.2?
  2. If not exposed at all, even as tiny-dot-debug-style-pins, is it possible to remap other pads to act as M5,M6,M7,M8? (in betaflight? Custom firmware?)
  3. Is there a trick to discovering solder pad names as they are called by the board itself? (Beeper pad is designated "D15", while diagram names it BB-)

(08-May-2022, 11:21 PM)cyberk0tt Wrote: I was playing around with this exact board (the 1.2 version, which still comes with a 1.0 manual), just realized the pinout has changed, and came right here - my first message, very new to FPV drones 

I was actually very much planning on using said M5-8 pads, is it still possible with the 1.2 upgrade?
Checked the board's resources, looks like pins are still present, however I do not understand where they are actually located..

Code:

   ...

   MOTOR 1            B00
   MOTOR 2            B01
   MOTOR 3            E09
   MOTOR 4            E11
>  MOTOR 5            C09
>  MOTOR 6            A03
>  MOTOR 7            B04
>  MOTOR 8            B05
   ...
   BEEPER 1 D15

  1. Where are motor M5,M6,M7,M8 pads on GN745AIO v1.2?
  2. If not exposed at all, even as tiny-dot-debug-style-pins, is it possible to remap other pads to act as M5,M6,M7,M8? (in betaflight? Custom firmware?)
  3. Is there a trick to discovering solder pad names as they are called by the board itself? (Beeper pad is designated "D15", while diagram names it BB-)

Unfortunately the motor pads M5/M6/M7/M8 are not broken out on this AIO board (based on my interpretation of the images I see of the AIP board online).

You can remap or resource map pads in Betaflight but for motors the usual requirements for the motors pins/pads are that they heed to have DMA and Timer functions. You will not find many pins/pads that support DMA/Timer functions apart from the LED_STRIP pin/pad and perhaps if you are very lucky the Buzzer or Camera control pin/pad.

You can in continuity mode using a multimeter usually probe the broken out pads back to the pins on the STM32 MCU chip and with a quick look at the spec sheet you can guess the PIN assignments. 

You can even solder a small wire to the STM32 MCU chip legs for additional motor outputs.

All of this is not of any use the case of this AIO board since the STM32 chip is BGA soldered and the MCU legs are not exposed.

(09-May-2022, 12:44 AM)kafie1980 Wrote: Unfortunately the motor pads M5/M6/M7/M8 are not broken out on this AIO board (based on my interpretation of the images I see of the AIP board online).

You can remap or resource map pads in Betaflight but for motors the usual requirements for the motors pins/pads are that they heed to have DMA and Timer functions. You will not find many pins/pads that support DMA/Timer functions apart from the LED_STRIP pin/pad and perhaps if you are very lucky the Buzzer or Camera control pin/pad.

You can in continuity mode using a multimeter usually probe the broken out pads back to the pins on the STM32 MCU chip and with a quick look at the spec sheet you can guess the PIN assignments. 

You can even solder a small wire to the STM32 MCU chip legs for additional motor outputs.

All of this is not of any use the case of this AIO board since the STM32 chip is BGA soldered and the MCU legs are not exposed.

I understand. Thank your for your informative answer, very helpful
Too bad they don't warn you at Flywoo's, would have picked a different one.

Think I'll have more luck combining these three into a tiny 3S X8?
  1 x GOKU HEX F745 FC 16mm X 16mm
  2 x GOKU BS 35A 2-6S ESC 16mm x16mm

Looks like it's the same exact board as GN745 only smaller, lower amps and requires external ESCs..

(09-May-2022, 08:18 PM)cyberk0tt Wrote: I understand. Thank your for your informative answer, very helpful
Too bad they don't warn you at Flywoo's, would have picked a different one.

Think I'll have more luck combining these three into a tiny 3S X8?
  1 x GOKU HEX F745 FC 16mm X 16mm
  2 x GOKU BS 35A 2-6S ESC 16mm x16mm

Looks like it's the same exact board as GN745 only smaller, lower amps and requires external ESCs..

The GOKU HEX F745 seems to have 8 motor outputs which should do the job but since its a 16x16 footprint just be aware that the solder pads are going to be tiny.