# VUAV-V7pro Flight Controller
The VUAV-V7pro flight controller is manufactured and sold by [VIEWPRO](http://www.viewprotech.com/).
## Features
- STM32H743 microcontroller
- Three IMUs: ADIS16470,ICM42688,ICM42688
- Internal vibration isolation for IMUs
- Internal RM3100 SPI magnetometer
- Internal two MS5611 SPI barometer
- Internal RGB LED
- MicroSD card slot port
- 1 Analog power port
- 1 CAN power port
- 5 UARTs and 1 USB ports
- 1 RS232 port
- 14 PWM output ports
- 4 I2C and 2 CAN ports
- Safety switch port
- Buzzer port
- RC IN port
## Pinout
## UART Mapping
- SERIAL0 -> USB
- SERIAL1 -> UART2 (Telem1) (DMA enabled)
- SERIAL2 -> UART6 (Telem2) (DMA enabled)
- SERIAL3 -> UART1 (GPS1)
- SERIAL4 -> UART3 (GPS2)
- SERIAL5 -> UART8 (USER) TX only on pin, RX is tied to RCIN
- SERIAL6 -> UART4 (RS232)
- SERIAL7 -> USB2 (virtual port on same connector)
- SERIAL8 -> UART7 (DEBUG)
The Telem1,Telem2 port has RTS/CTS pins, the other UARTs do not have RTS/CTS.
## Connectors
### TELEM1 ,TELEM2 port
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
TX (OUT) |
+3.3V |
| 3 |
RX (IN) |
+3.3V |
| 4 |
CTS |
+3.3V |
| 5 |
RTS |
+3.3V |
| 6 |
GND |
GND |
### GPS1/I2C4 port
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
TX (OUT) |
+3.3V |
| 3 |
RX (IN) |
+3.3V |
| 4 |
SCL I2C4 |
+3.3V (pullups) |
| 5 |
SDA I2C4 |
+3.3V (pullups) |
| 6 |
SafetyButton |
+3.3V |
| 7 |
SafetyLED |
+3.3V |
| 8 |
- |
- |
| 9 |
Buzzer |
+3.3V |
| 10 |
GND |
GND |
### GPS2/I2C3 port
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
TX (OUT) |
+3.3V |
| 3 |
RX (IN) |
+3.3V |
| 4 |
SCL I2C3 |
+3.3V (pullups) |
| 5 |
SDA I2C3 |
+3.3V (pullups) |
| 6 |
GND |
GND |
### CAN1,CAN2 port
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
CAN_H |
+24V |
| 3 |
CAN_L |
+24V |
| 4 |
GND |
GND |
### I2C1,I2C2 port
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
SCL |
+3.3 (pullups) |
| 3 |
SDA |
+3.3 (pullups) |
| 4 |
GND |
GND |
### USB Ex
| Pin |
Signal |
Volt |
| 1 |
VCC IN |
+5V |
| 2 |
D_minus |
+3.3V |
| 3 |
D_plus |
+3.3V |
| 4 |
GND |
GND |
### RSSI
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
RSSI |
up to +3.3V |
| 3 |
UART8_TX (OUT) |
+3.3 |
| 4 |
GND |
GND |
### RS232
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
TX (OUT) |
+3.3V |
| 3 |
RX (IN) |
+3.3V |
| 4 |
GND |
GND |
### DEBUG
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
TX (OUT) |
+3.3V |
| 3 |
RX (IN) |
+3.3V |
| 4 |
SWDIO |
+3.3V |
| 5 |
SWCLK |
+3.3V |
| 6 |
GND |
GND |
### ADC
| Pin |
Signal |
Volt |
| 1 |
VCC |
+5V |
| 2 |
ADC_3V3 |
up to +3.3V |
| 3 |
ADC_6V6 |
up to +6.6V |
| 4 |
GND |
GND |
### POWER1
| Pin |
Signal |
Volt |
| 1 |
VCC IN |
+5V |
| 2 |
VCC IN |
+5V |
| 3 |
CURRENT |
up to +3.3V |
| 4 |
VOLTAGE |
up to +3.3V |
5 |
GND |
GND |
6 |
GND |
GND |
### POWER2(CAN1)
| Pin |
Signal |
Volt |
| 1 |
VCC IN |
+5V |
| 2 |
VCC IN |
+5V |
| 3 |
CAN1_H |
+24V |
| 4 |
CAN1_L |
+24V |
5 |
GND |
GND |
6 |
GND |
GND |
## RC Input
RC input is configured on the RCIN pin, at one end of the servo rail. This pin supports all unidirectional RC protocols. For bi-directional protocols, such as CRSF/ELRS, UART8 can be set to protocol "23" and the reciever tied to RCIN (shared with UART8 RX) and UART8 TX. In this case, the RC_PROTOCOLS parameter should be set to the expected protocol type to avoid accidental erroneous detection by the RCIN path.
## PWM Output
The VUAV-V7pro supports up to 14 PWM outputs,support all PWM protocols. Outputs 1-12 support DShot. Outputs 1-8 support bi-directional Dshot. All 14 PWM outputs have GND on the top row, 5V on the middle row and signal on the bottom row.
The 14 PWM outputs are in 4 groups:
- PWM 1, 2, 3 and 4 in group1
- PWM 5, 6, 7 and 8 in group2
- PWM 9, 10, 11 and 12 in group3
- PWM 13, 14 in group4
Channels within the same group need to use the same output rate. If any channel in a group uses DShot, then all channels in that group need to use DShot.
## GPIOs
All 14 PWM channels can be used for GPIO functions (relays, buttons, RPM etc).
The pin numbers for these PWM channels in ArduPilot are shown below:
| PWM Channels |
Pin |
PWM Channels |
Pin |
| PWM1 |
50 |
PWM8 |
57 |
| PWM2 |
51 |
PWM9 |
58 |
| PWM3 |
52 |
PWM10 |
59 |
| PWM4 |
53 |
PWM11 |
60 |
| PWM5 |
54 |
PWM12 |
61 |
| PWM6 |
55 |
PWM13 |
62 |
| PWM7 |
56 |
PWM14 |
63 |
## Analog inputs
The VUAV-V7pro flight controller has 5 Analog inputs
- ADC Pin2-> Battery Current
- ADC Pin16 -> Battery Voltage
- ADC Pin19 -> ADC 3V3 Sense
- ADC Pin3 -> ADC 6V6 Sense
- ADC Pin9 -> RSSI voltage monitoring
## Battery Monitor Configuration
The board has voltage and current inputs sensor on the POWER1 ADC and POWER2 CAN connector.
The correct battery setting parameters are:
Enable Battery1 monitor:
- BATT_MONITOR 4
- BATT_VOLT_PIN 16
- BATT_CUR_PIN 2
- BATT_VOLT_MULT 15.7 (may need adjustment if supplied monitor is not used)
- BATT_AMP_PERVLT 60.61 (may need adjustment if supplied monitor is not used)
Enable Battery2 monitor (if used):
- BATT2_MONITOR 8
## Loading Firmware
The VUAV-V7pro flight controller comes pre-installed with an ArduPilot compatible bootloader, allowing the loading of \*.apj firmware files with any ArduPilot compatible ground station.