Interfaces
This page describes general information and interface location of SmartAP AIRLink.
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This page describes general information and interface location of SmartAP AIRLink.
Last updated
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Power input with voltage & current monitoring
AI Mission Computer micro SD card
Flight Controller micro SD card
AI Mission Computer USB Type-C
PPM input, SBUS output, RSSI monitor
1
12V
+12V
Main power input
2
12V
+12V
Main power input
3
12V
+12V
Main power input
4
BAT_CURRENT
+3.3V
Battery current monitoring
5
BAT_VOLTAGE
+3.3V
Battery voltage monitoring
6
3V3
+3.3V
3.3V output
7
PWR_KEY
+3.3V
Power key input
8
GND
Ground
9
GND
Ground
10
GND
Ground
1
5V
+5V
5V output
2
PPM_IN
+3.3V
PPM input
3
RSSI_IN
+3.3V
RSSI input
4
FAN_OUT
+5V
Fan output
5
SBUS_OUT
+3.3V
SBUS output
6
GND
Ground
Ethernet port with power output
Telemetry port
Second GPS port
Spare I2C / UART port
Flight controller USB Type-C
Micro SIM Card
HDMI input port (payload camera)
1
5V
+5V
Radio module power supply
2
5V
+5V
Radio module power supply
3
ETH_TXP
+3.3V
Ethernet transmit positive
4
ETH_TXN
+3.3V
Ethernet transmit negative
5
ETH_RXP
+3.3V
Ethernet receive positive
6
ETH_RXN
+3.3V
Ethernet receive negative
7
GND
Ground
8
GND
Ground
Ethernet interface is decoupled with capacitors. Ethernet cable should be twisted to reduce EMI noise. Shorter cables are recommended for increased performance and higher bandwidth of the interface.
1
5V
+5V
Power supply output
2
USART2_TX
+3.3V
Telemetry 3 TX
3
USART2_RX
+3.3V
Telemetry 3 RX
4
USART2_CTS
+3.3V
Telemetry 3 CTS
5
USART2_RTS
+3.3V
Telemetry 3 RTS
6
GND
Ground
1
5V
+5V
Power supply output
2
USART4_TX
+3.3V
UART 4 TX
3
USART4_RX
+3.3V
UART 4 RX
4
I2C3_SCL
+3.3V
I2C3 Clock
5
I2C3_SDA
+3.3V
I2C3 Data
6
GND
Ground
1
5V
+5V
Power supply output
2
USART8_TX
+3.3V
UART 8 TX GPS2
3
USART8_RX
+3.3V
UART 8 RX GPS2
4
I2C2_SCL
+3.3V
I2C2 Clock
5
I2C2_SDA
+3.3V
I2C2 Data
6
GND
Ground
AIRLink has integrated 1.5KΩ pull-up resistors for all I2C lines. No external pull-up resistors required.
Main GNSS and compass port
Main telemetry port
CSI camera input
CAN 1
CAN 2
1
5V
+5V
Power supply output
2
USART7_TX
+3.3V
Telemetry 1 TX
3
USART7_RX
+3.3V
Telemetry 1 RX
4
USART7_CTS
+3.3V
Telemetry 1 CTS
5
USART7_RTS
+3.3V
Telemetry 1 RTS
6
GND
Ground
1
5V
+5V
Power supply output
2
USART1_TX
+3.3V
GPS 1 TX
3
USART1_RX
+3.3V
GPS 1 RX
4
I2C1_SCL
+3.3V
MAG 1 Clock
5
I2C1_SDA
+3.3V
MAG 1 Data
6
SAFETY_BTN
+3.3V
Safety button
7
SAFETY_LED
+3.3V
Safety LED
8
+3V3
+3.3V
3.3V output
9
BUZZER
+5V
Buzzer output
10
GND
Ground
1
5V
+5V
Power supply output
2
CAN1_H
+5V
CAN 1 High (120Ω)
3
CAN1_L
+5V
CAN 1 Low (120Ω)
4
GND
Ground
1
5V
+5V
Power supply output
2
CAN2_H
+5V
CAN 2 High (120Ω)
3
CAN2_L
+5V
CAN 2 Low (120Ω)
4
GND
Ground
AIRLink has integrated 120Ω CAN bus termination resistor. To comply with ISO 11898 user the second 120Ω resistor at the other end of the bus.
SBUS input
16 PWM output channels
2x LTE antenna sockets in 4G, 4x LTE antenna sockets in 5G
WiFi antenna socket (AP & Station modes)
SmartAP AIRLink has a large number of serial ports with the following pinout:
UART1
/dev/ttyS0
GPS 1
UART2
/dev/ttyS1
Telemetry 3
UART3
/dev/ttyS2
Debug console (internal connector)
UART4
/dev/ttyS3
Telemetry 4
UART5
/dev/ttyS4
Telemetry 2 (used internally with Mission Computer)
UART6
/dev/ttyS5
PWM IO Module (used internally)
UART7
/dev/ttyS6
Telemetry 1
UART8
/dev/ttyS7
GPS 2
Looking for CAD files? Here they are:
Want to see the detailed full specifications? Here is the PDF datasheet:
