SKY-DRONES DOCS
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  • GENERAL
    • Welcome
    • The Platform
      • Hardware procurement and licensing
      • Software distribution and deployment
    • Revision History
  • AVIONICS
    • SmartAP AIRLink
      • Hardware
      • Interfaces
      • Set content
      • Installation
      • Initial Power Up
      • Connect via SmartAP GCS
      • Software development
      • Troubleshooting
      • CAD Model
      • Certification
      • FAQ
    • ATLAS Handheld
      • Feature Highlights
      • Detailed Specifications
      • Initial setup
      • Troubleshooting
    • AIRLink Telemetry
      • Interfaces
      • Installation
      • Initial setup
      • USB connection setup
      • CAD Model
    • SmartLink
      • Interfaces
      • Set content
      • Installation
      • Manual Control
      • Change Settings
      • API and SDK
      • Other AP / GCS Support
      • Firmware Update
      • Troubleshooting
      • Installation hints
      • CAD Model
      • Certificates
      • FAQ
    • SmartAP PDB
      • Installation
    • SmartAP GNSS
      • Standard GNSS
      • RTK GNSS
      • Updating GNSS Module
      • CAD Model
    • Legacy autopilots
      • SmartAP MAX
        • Installation
        • CAD Model
      • SmartAP PRO
        • Installation
      • Drivers
      • Getting the Software
      • General Configuration
      • Firmware Update
      • Standard PID Presets
      • Flashing Bootloader
  • FLIGHT OPERATIONS
    • SmartAP GCS
      • Sign Up
      • Radio Settings
      • Autonomous Flights
      • Multiple Drones
      • Rally Points
      • UTM and Airspace
      • Elevation Data
      • Camera Settings
      • RTK GNSS
      • Logs Analysis
      • Geotag Images
      • Processing the Logs
      • Video Streaming
    • Sky-Drones Cloud
      • Sign up and Log in
      • Dashboard
      • Drones and Operators
      • Flight Locations
      • Fleet Management
      • Flight Logs
      • 3D Mission Planning
      • Integrated UTM
      • Real-Time Flights
      • Sky-Drones API
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On this page
  • Connectors pinout
  • Left side
  • Right side
  • Front side
  • Rear side
  • Serial ports mapping

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  1. AVIONICS
  2. SmartAP AIRLink

Interfaces

This page describes general information and interface location of SmartAP AIRLink.

PreviousHardwareNextSet content

Last updated 2 years ago

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Connectors pinout

Left side

  • 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

POWER - JST GH SM10B-GHS-TB

Pin
Name
Voltage level
Function

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

CPU SD card - microSD

CPU USB - USB Type C

RC Connector - JST GH SM06B-GHS-TB

Pin
Name
Voltage level
Function

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

FMU SD card - microSD

Right side

  • 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)

ETHERNET - JST GH SM08B-GHS-TB

Pin
Name
Voltage level
Function

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.

TEL3 - JST GH SM06B-GHS-TB

Pin
Name
Voltage level
Function

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

I2C3 / UART4 - JST GH SM06B-GHS-TB

Pin
Name
Voltage level
Function

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

GPS2 - JST GH SM06B-GHS-TB

Pin
Name
Voltage level
Function

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.

FMU USB - USB Type C

SIM Card - micro SIM

HDMI - mini HDMI

Front side

  • Main GNSS and compass port

  • Main telemetry port

  • CSI camera input

  • CAN 1

  • CAN 2

TEL1 - JST GH SM06B-GHS-TB

Pin
Name
Voltage level
Function

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

GPS1 - JST GH SM10B-GHS-TB

Pin
Name
Voltage level
Function

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

CAN1 - JST GH SM04B-GHS-TB

Pin
Name
Voltage level
Function

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

CAN2 - JST GH SM04B-GHS-TB

Pin
Name
Voltage level
Function

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.

CAMERA - FPC 30 pin, 0.5mm pitch

Rear side

  • SBUS input

  • 16 PWM output channels

  • 2x LTE antenna sockets in 4G, 4x LTE antenna sockets in 5G

  • WiFi antenna socket (AP & Station modes)

Serial ports mapping

SmartAP AIRLink has a large number of serial ports with the following pinout:

UART Port
Path
Description

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:

CAD Model
5MB
AIRLink-Datasheet.pdf
pdf
SmartAP AIRLink Datasheet
Left side
Right side
Front side