Flywoo GOKU GN 745 AIO - PWM pads now on backside?

Hardware Other Hardware
1

I just got a Flywoo GOKU GN 745 AIO FC and wonder how to find out where PWM 5-8 are to find?
The latest description seems to refer to an old version of the FC.

Now for this 4 pads there is obviously another PCB layout. Two of them are now GND and 5V.

On the backside where the F051K86’s are located, there are some small round pads near to the mentioned chips for the ESC’s.

Link to the picture of the backside:

There are 10 small round pads. The one in the edge obvoiusly is no data pad.

Some of the pads seem to go to pin 24 of the F051K86’s.

Can anyone help further to find out if this pads are usable for PWM?

2

With some research i found out, that pin 24 on the ESC chip should be for telemetry.

3

I don’t see any evidence that there are 8 outputs.

4

I think this may be a related issue to mine here (Flywoo Goku F745 AIO - Showing 8 motors, but only want 4?)
I think only the nano has the capability for 8 motors, not the AIO

5

Yes, that’s what I concluded also.

6

Were you able to get the AIO to work with 4 motors? Can you share what your servo output tab looked like? And are you seeing 4 or 8 motors on the motor test tab?

7

My actual problem problem pointed in the opposite direction. I wanted PWM outputs for Servos.

I build up a Tailsitter and ordered this Board because of the description in the wiki:
“The GOKU GN 745 AIO supports up to 8 PWM outputs. The pads for motor output ESC1 to ESC4 on the above diagram are the first 4 outputs, there are four additional pads for PWM 5-8. All 8 outputs support DShot as well as all PWM types.”

Sory for my unclear description:

In a previous version of the AIO Board there were Pads for M5-8 in the place where now BB-, LED, 5V, and GND is.

I solved this problem by editing the HWDEF and swap uart pins.

# order of UARTs (and USB)
SERIAL_ORDER OTG1 USART1 USART2 USART3 UART4 UART5 USART6 UART7

# USART1
PA10 USART1_RX USART1 NODMA
PA9  USART1_TX USART1

# USART2
PD5 USART2_TX USART2
PD6 USART2_RX USART2 NODMA

# USART3
PB10 USART3_TX USART3
PB11 USART3_RX USART3

# UART4
PC10 UART4_TX UART4							# UART4_TX at unconnected alternative MCU pin to allow extra PWM
PC11 UART4_RX UART4 NODMA					# UART4_RX at unconnected alternative MCU pin to allow extra PWM

# UART5
PC12 UART5_TX UART5 NODMA
PD2  UART5_RX UART5 NODMA

# USART6
PC6 USART6_TX USART6
PC7 USART6_RX USART6 NODMA

# UART7
PE7 UART7_RX UART7 NODMA
PE8 UART7_TX UART7 NODMA

# Motors

PB0  TIM3_CH3 TIM3 PWM(1) GPIO(50) BIDIR	# Motor 1
PB1  TIM3_CH4 TIM3 PWM(2) GPIO(51) 			# Motor 2
PE9  TIM1_CH1 TIM1 PWM(3) GPIO(52)			# Motor 3
PE11 TIM1_CH2 TIM1 PWM(4) GPIO(53) BIDIR	# Motor 4
#PC9  TIM8_CH4 TIM8 PWM(5) GPIO(54)			# Motor 5
#PA3  TIM5_CH4 TIM5 PWM(6) GPIO(55)			# Motor 6
#PB4  TIM3_CH1 TIM3 PWM(7) GPIO(56)			# Motor 7
#PB5  TIM3_CH2 TIM3 PWM(8) GPIO(57)			# Motor 8

# PWM

PA0  TIM5_CH1 TIM5 PWM(5) GPIO(54)			# PWM 5 instead of UART4_TX
PA1  TIM5_CH2 TIM5 PWM(6) GPIO(55)			# PWM 6 instead of UART4_RX
8

Hello everyone,
if you want only one pwm single then you ight get on servo 9 on latest flywoo f745 aio, you can just select any rcin (RCIN x), that worked for me, just connect your signal wire to LED port in aio board and 5v + & GND, jus beside the LED port.

thanks

1 Like
9

I also found this solution, but i needed 2 PWM for Elevon servos.

So with the LED pin in addition we have now 3 PWM.

10

May I know how to connect 2 servos for elevons on the board? I am quite unclear about it. So we got one PWM from the LED port and where is the one?